Journal of Biomedical Physics and Engineering, 2018
Osteoarthritis of the knee is a debilitating condition affecting increasing numbers of individual... more Osteoarthritis of the knee is a debilitating condition affecting increasing numbers of individuals each year. One option for treatment is orthotic knee braces, but a little independent reviews have taken place to date on their relative outcomes for users. This study therefore evaluates the efficacy of different types of knee orthoses (braces) with regard to key aspects of use, including gait parameters, mobility and levels of comfort and compliance in subjects presenting with osteoarthritis (OA) of the knee. The collated data is presented with relevant supporting literature and appropriate descriptions in relation to each knee orthosis type that was identified, within appropriate subsections with advantages and disadvantages appropriately allocated. An analysis of each brace as presented by the corresponding article is then described further in terms of the design and structure, user outcomes and assessment summaries. According to the study carried out in this paper, it is presented...
This study aimed to compare foot plantar pressure distribution while jogging and running in highl... more This study aimed to compare foot plantar pressure distribution while jogging and running in highly trained adolescent runners. Eleven participants performed two constant-velocity running trials either at jogging (11.2 ± 0.9 km/h) or running (17.8 ± 1.4 km/h) pace on a treadmill. Contact area (CA in cm(2)), maximum force (F(max) in N), peak pressure (PP in kPa), contact time (CT in ms), and relative load (force time integral in each individual region divided by the force time integral for the total plantar foot surface, in %) were measured in nine regions of the right foot using an in-shoe plantar pressure device. Under the whole foot, CA, F(max) and PP were lower in jogging than in running (-1.2% [p<0.05], -12.3% [p<0.001] and -15.1% [p<0.01] respectively) whereas CT was higher (+20.1%; p<0.001). Interestingly, we found an increase in relative load under the medial and central forefoot regions while jogging (+6.7% and +3.7%, respectively; [p<0.05]), while the relative load under the lesser toes (-8.4%; p<0.05) was reduced. In order to prevent overloading of the metatarsals in adolescent runners, excessive mileage at jogging pace should be avoided.
Objecve Flat foot is common deformity in children that medial longitudinal arch is decreased, whi... more Objecve Flat foot is common deformity in children that medial longitudinal arch is decreased, which if not treated in childhood may lead to pain and other problems in adulthood. Insoles and orthopedic shoes usually prescribed for treatment of flat foot in children, but the biomechanical impact of these devices is not yet clear. The purpose of this study is comparison of two convenonal orthoses interven-on in Iran, including medical shoe and funconal foot orthosis on stac balance by measurement of displacement of center of pressure and cop sway velocity in children with flexible flat foot. Materials and Methods This Quasi experimental study were accomplished on 30 children with flat foot and 10 healthy children for achievement of normal data in healthy children. Children stood unilaterally on force plate of Neurocom and in order to measurement of balance, displacement of center of pressure and COP (Center of Pressure) sway velocity were recorded. Results The results related to displa...
1. MSc. of Prosthe cs, Faculty of Rehabilita on, Iran University of .Medical Sciences, Tehran, Ir... more 1. MSc. of Prosthe cs, Faculty of Rehabilita on, Iran University of .Medical Sciences, Tehran, Iran. 2.PhD. of Prosthe cs, Faculty of Rehabilita on, Faculty Member of Iran University of Medical Sciences, Faculty of rehabilita on, Tehran, Iran. 3. MSc. in Prosthe cs, Faculty of Rehabilita on, Faculty Member of Iran University of Medical Sciences, Faculty of Rehabilita on, Tehran, Iran. Fatemeh dehghani 1 , *Hassan saeedi2, Behnam Hajiaghaei3
ObjecƟ ve Flat foot is common deformity in children that medial longitudinal arch is decreased, w... more ObjecƟ ve Flat foot is common deformity in children that medial longitudinal arch is decreased, which if not treated in childhood may lead to pain and other problems in adulthood. Insoles and orthopedic shoes usually prescribed for treatment of flat foot in children, but the biomechanical impact of these devices is not yet clear. The purpose of this study is comparison of two convenƟ onal orthoses intervenƟ on in Iran, including medical shoe and funcƟ onal foot orthosis on staƟ c balance by measurement of displacement of center of pressure and cop sway velocity in children with flexible flat foot . Materials and Methods This Quasi experimental study were accomplished on 30 children with flat foot and 10 healthy children for achievement of normal data in healthy children. Children stood unilaterally on force plate of Neurocom and in order to measurement of balance, displacement of center of pressure and COP (Center of Pressure) sway velocity were recorded. Results The results related...
Introduction: Biomechanical studies have frequently shown a close relationship between the knee a... more Introduction: Biomechanical studies have frequently shown a close relationship between the knee and ankle joint movements. ACL-deficiency may change the foot pressure pattern of the ACL-deficient knee subjects. The current study aimed to investigate the pattern of the foot pressure in coper and non-coper ACL-deficient knee subjects during standing on one and both feet. Methods and Materials: This case-control study was conducted on 12 coper and 12 non-coper ACL-deficient knee subjects and 25 age-sex matched healthy subjects. The subjects were tested barefoot during single and bilateral standing on the platform of a Zebris pedobarograph tool. The outcome measures included the measurements of the pressures of each part of the foot during the tests. Results: The results showed a significantly decreased total pressure only between the non-coper and control groups during double leg stance test. In terms of the forefoot pressure, a significant increased pressure was shown only in the non-...
In this study, the kinematic effect of two molding methods in the manufacture of foot orthoses on... more In this study, the kinematic effect of two molding methods in the manufacture of foot orthoses on ankle joint was examined. The aim of this study was to determine a more beneficial method about ankle kinematics in the manufacture of insoles for people with flexible flat foot. Ten males aged 19 to 27 years, with normal BMI and normal gait pattern participated in this study, all of them had flexible flatfoot. Each person wearing special shoes on three situations: stepped without the insole, with the Slipper cast insole and Circumferential wrap method insole and in each situation completed a walk cycle. The kinematic data were collected and measured for each subject under three assumed positions by VICON motion analysis system. For comparison and analysis of three assumed situation, repeated measures test (ANOVA) was used. The results of this study show that the use of two molding method, had no immediate effect on reducing the average maximum eversion angle of the ankle. Eversion spee...
Background: Drop-foot syndrome is a disorder in which the dorsiflexor muscles are weakened or com... more Background: Drop-foot syndrome is a disorder in which the dorsiflexor muscles are weakened or completely paralyzed, leading to foot slapping after the initial contact and foot-dragging during the swing phase. Passive and hybrid passive ankle-foot orthoses (AFOs) are often prescribed as an intervention for this disorder; however, the effects of these AFOs on kinetic parameters during the gait of drop-foot patients seem unclear. This study aimed to compare the affected lower limb joints of ankle, knee, and hip kinetics parameters (moments and powers) during walking in drop-foot patients using an innovative AFO storing-restoring hybrid passive AFO, named “Comfort Gait” and posterior leaf spring (PLS) AFO. Methods: Ten drop-foot patients were recruited in the current study to walk at a comfortable self-selected speed while wearing two different AFO selections. Kinetic parameters with a motion capture system were obtained for these patients. Results: The results of this study revealed a ...
Background: Socket design is thought to improve gait performance and symmetry as the other compon... more Background: Socket design is thought to improve gait performance and symmetry as the other components of the prosthesis do. This study focused on the comparison of two different sockets in transfemoral amputee patients to evaluate the influence of the socket designs on gait symmetry and various spatiotemporal gait parameters. Methods: Two transfemoral amputees participated in this case series study. They were asked to walk with the quadrilateral and the new modified sockets along a 10-meter walkway. The marker-based motion capture system recorded the spatiotemporal gait data during all walking trials. Kinematic data were compared between the two test conditions using the Wilcoxon signed-rank test and Symmetry Index. Results: The new socket increased velocity and cadence and reduced step width in both amputees, compared with the quadrilateral sockets. However, a good symmetry was observed in step length, stride length, step time, and stride time within two limbs by both sockets (SI ≤...
International Journal of Engineering and Advanced Technology, 2019
Nowadays security has become a great concern in the field of computer science and information tec... more Nowadays security has become a great concern in the field of computer science and information technology. In order to protect data from unintended users and to achieve a desirable level of security, several cryptographic algorithms based on various technology have been proposed. Linear Feedback Shift Register (LFSR) may play an important role in the design of such cryptographic algorithms. LFSR based cryptographic algorithms are often lightweight in nature and are more suitable for resource constraining devices. In this paper we present a detailed analysis of LFSR and design of LFSR to implement cryptographic algorithms.
International journal of clinical and experimental medicine, 2015
Left ventricular hypertrophy (LVH) represents a major predictor of the development of cardiovascu... more Left ventricular hypertrophy (LVH) represents a major predictor of the development of cardiovascular (CV) complications. Over-hydration (OH) is an important uremic risk factor associated with LVH and increased CV morbidity and mortality in peritoneal dialysis (PD) patients. In the present study we evaluated the prevalence of sub-clinical OH (SCOH) among PD patients and its effects on left ventricular mass (LVM). In this cross sectional study hydration status, blood pressure, glucose load, systemic inflammation and LVM were evaluated in 43 clinically stable patients on maintenance PD for 24-76 months. The hydration status was assessed by whole-body bio-impedance spectroscopy (BIS). Peripheral edema and any evidence of pulmonary congestion were considered clinical signs of OH. OH ≥ 1.5 L was detected in 26 (60.5%) of the study participants; the OH in 19 (73.1%) of them was sub-clinical. Only 23.5% (4/17) of patients with OH < 1.5 L had LVH compared to 68.4% (13/19) of those with SC...
Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis, 2012
The effects of previous abdominal operations and intraperitoneal adhesions on the outcome of peri... more The effects of previous abdominal operations and intraperitoneal adhesions on the outcome of peritoneal dialysis catheters.
Maintaining support in people with ... [3] Orthotics and prosthetics in ... [4] Iranian casualtie... more Maintaining support in people with ... [3] Orthotics and prosthetics in ... [4] Iranian casualties during the eight years of Iraq-Iran ... [5] Quality of life: The assessment, analysis and interpretation of patient-reported ... [6] The value of adding the Quality of Life Enjoyment and Satisfaction Questionnaire to outcome assessments of psychiatric inpatients with mood and affective ... [7] Musculoskeletal pain and overuse syndromes in adult acquired major upper-limb ... [8] Depression and incident lower limb amputations in ... [9] Amputees in limburg: Incidence, morbidity and mortality, prosthetic supply, care utilisation and functional level ... [10] Prosthetics research study ... [11] Scientific and clinical problems in indexes of functional ... [12] Functional assessment measures in ... [13] Prosthesis evaluation questionnaire for persons with lower limb ... [14] Lower limb prosthetic outcome measures: a review of the ... [15] A systematic review of functional and quality of life assessment after major lower ... [16] Use of the prosthesis evaluation ... [17] Guidelines for the process of cross-cultural adaptation of ... [18] Prosthesisrelated QOL of the people with amputation in ... [19] Comparison of prosthetic outcomes between adolescent transtibial and ... [20] Measuring long-term outcome in people with lower limb ... [21] Measuring mobility in people with lower limb amputation: Rasch analysis of ... [22] Cross-cultural validation of the ... [23] Cross cultural equivalence testing of the ... [24] The prosthesis evaluation questionnaire: Reliability and cross-validation of ... [25] Translating health status questionnaires and ... [26] Research Methods in ... [27] Measurement in medicine: a practical ... [28] Quantifying test-retest reliability using the intraclass correlation coefficient and ... [29] Cronbach's alpha: A tool for assessing ... [30] How to choose outcomes relevant to the client and ... [31] The short form health survey ...
Objectives: The main objective of this study was to culturally adapt the original English version... more Objectives: The main objective of this study was to culturally adapt the original English version of the Physical Activity Scale For Individuals with Physical Disabilities (PASIPD) for the Persian-speaking patients with Lower-Limb Amputations (LLAs) and to evaluate its reliability and construct validity. Methods: This research was a multicenter cross-sectional and repeated measure study. The cultural adaptation process was conducted according to an accepted international guideline. A total of 197 Persian-speaking individuals with LLA were recruited to investigate the reliability and validity of the PASIPD. Reliability analyses were assessed by Cronbach α and the Pearson product-moment correlation coefficient. The Association between the PASIPD scores and the prosthetic limb user survey of mobility scores was examined to evaluate the convergent validity of the PASIPD. Known-groups validity was assessed based on sex, amputation causes, and amputation levels. Results: The PASIPD had an...
Background and Objectives: Stroke is a life-threatening disease that can lead to walking disorder... more Background and Objectives: Stroke is a life-threatening disease that can lead to walking disorders. The orthosis that is generally prescribed for the patients in this situation is ankle-foot orthosis (AFO). For orthotic treatment to be effective, it is important to evaluate the quality of treatment, and one of the most important indicators is the level of patient satisfaction. The present study was conducted to evaluate the level of satisfaction and the factors affecting it in stroke patients who used AFOs made by Orthosis and Prosthesis (O&P) Centers in Tehran. Methods: The present study was a descriptive-analytical study conducted on 64 stroke patients who were referred to O&P centers and had used AFO in Tehran City, Iran, in 2021. The data were collected through an interview. The level of satisfaction of stroke patients was examined through an opus questionnaire. Results: The mean±SD overall satisfaction, satisfaction with services, and satisfaction with the device in patients we...
BACKGROUND Radiographic imaging has been considered the gold standard in evaluating the skeletal ... more BACKGROUND Radiographic imaging has been considered the gold standard in evaluating the skeletal alignment of the foot in static weightbearing. The effects of foot orthoses on the alignment of foot bones have been mostly evaluated using lateral view x-rays. The posterior-anterior view has not been investigated extensively. OBJECTIVES To investigate the effects of 2 foot orthoses: University of California Biomechanics Laboratory Orthosis (UCBL) and a prefabricated orthosis (P-FFO) on the alignment of foot bones on anterior-posterior x-rays in young people with symptomatic flexible flatfoot (SFF). STUDY DESIGN This is a randomized, crossover study. METHODS Fifteen participants (mean [SD], 23.67 ± 2 years) with SFF were randomly imaged in 3 different conditions: shoes only, shoes + P-FFO, and shoes + UCBL. The talonavicular coverage, the first and the second talometatarsal angles, the intermetatarsal angle, and the cuboid abduction angle (CAA) were measured on weightbearing, anterior-posterior x-ray images for each condition. RESULTS Both orthotic designs demonstrated a significant reduction in the talonavicular coverage, the first and the second talometatarsal angles, and the CAA compared with the shoe-only condition (P < .001). The talonavicular coverage angle reduced by ∼11% using P-FFO compared with UCBL (P < .005). No significant differences were observed for other angles between the 2 orthotic conditions. CONCLUSIONS Both orthotic conditions improved the talonavicular coverage, first and the second talometatarsal angle, and CAA in young people with SFF. The walls of the UCBL orthosis did not result in further correction of the talonavicular coverage angle compared with the prefabricated FFO design.
ABSTRACT Introduction This study evaluated the efficacy of two different medial linkage mechanism... more ABSTRACT Introduction This study evaluated the efficacy of two different medial linkage mechanisms (sliding mechanism [SM] and medial linkage mechanism associated with reciprocating gait motion (MLRGM), used within otherwise identical knee-ankle-foot orthoses (KAFOs) on patients with spinal cord injury (SCI). Methods Three volunteer subjects with SCI were fitted with a KAFO equipped with 1) an SM and 2) a medial linkage mechanism (MLRGM). Subjects walked at their self-selected speed along a flat walkway to enable a comparison of walking speed, endurance, and the resulting physiological cost index to be performed. Results The use of a KAFO fitted with the MLRGM resulted in improvements in walking speed, distance walked, and energy costs when compared with the more standard SM. However, the time required to don the KAFO increased with use of the MLRGM, but doffing time was approximately equal for both types. Conclusions This study demonstrated that the use of a KAFO with an MLRGM could provide significant benefits for patients with SCI when compared with a KAFO with a standard SM.
Journal of Biomedical Physics and Engineering, 2018
Osteoarthritis of the knee is a debilitating condition affecting increasing numbers of individual... more Osteoarthritis of the knee is a debilitating condition affecting increasing numbers of individuals each year. One option for treatment is orthotic knee braces, but a little independent reviews have taken place to date on their relative outcomes for users. This study therefore evaluates the efficacy of different types of knee orthoses (braces) with regard to key aspects of use, including gait parameters, mobility and levels of comfort and compliance in subjects presenting with osteoarthritis (OA) of the knee. The collated data is presented with relevant supporting literature and appropriate descriptions in relation to each knee orthosis type that was identified, within appropriate subsections with advantages and disadvantages appropriately allocated. An analysis of each brace as presented by the corresponding article is then described further in terms of the design and structure, user outcomes and assessment summaries. According to the study carried out in this paper, it is presented...
This study aimed to compare foot plantar pressure distribution while jogging and running in highl... more This study aimed to compare foot plantar pressure distribution while jogging and running in highly trained adolescent runners. Eleven participants performed two constant-velocity running trials either at jogging (11.2 ± 0.9 km/h) or running (17.8 ± 1.4 km/h) pace on a treadmill. Contact area (CA in cm(2)), maximum force (F(max) in N), peak pressure (PP in kPa), contact time (CT in ms), and relative load (force time integral in each individual region divided by the force time integral for the total plantar foot surface, in %) were measured in nine regions of the right foot using an in-shoe plantar pressure device. Under the whole foot, CA, F(max) and PP were lower in jogging than in running (-1.2% [p&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;0.05], -12.3% [p&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;0.001] and -15.1% [p&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;0.01] respectively) whereas CT was higher (+20.1%; p&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;0.001). Interestingly, we found an increase in relative load under the medial and central forefoot regions while jogging (+6.7% and +3.7%, respectively; [p&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;0.05]), while the relative load under the lesser toes (-8.4%; p&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;0.05) was reduced. In order to prevent overloading of the metatarsals in adolescent runners, excessive mileage at jogging pace should be avoided.
Objecve Flat foot is common deformity in children that medial longitudinal arch is decreased, whi... more Objecve Flat foot is common deformity in children that medial longitudinal arch is decreased, which if not treated in childhood may lead to pain and other problems in adulthood. Insoles and orthopedic shoes usually prescribed for treatment of flat foot in children, but the biomechanical impact of these devices is not yet clear. The purpose of this study is comparison of two convenonal orthoses interven-on in Iran, including medical shoe and funconal foot orthosis on stac balance by measurement of displacement of center of pressure and cop sway velocity in children with flexible flat foot. Materials and Methods This Quasi experimental study were accomplished on 30 children with flat foot and 10 healthy children for achievement of normal data in healthy children. Children stood unilaterally on force plate of Neurocom and in order to measurement of balance, displacement of center of pressure and COP (Center of Pressure) sway velocity were recorded. Results The results related to displa...
1. MSc. of Prosthe cs, Faculty of Rehabilita on, Iran University of .Medical Sciences, Tehran, Ir... more 1. MSc. of Prosthe cs, Faculty of Rehabilita on, Iran University of .Medical Sciences, Tehran, Iran. 2.PhD. of Prosthe cs, Faculty of Rehabilita on, Faculty Member of Iran University of Medical Sciences, Faculty of rehabilita on, Tehran, Iran. 3. MSc. in Prosthe cs, Faculty of Rehabilita on, Faculty Member of Iran University of Medical Sciences, Faculty of Rehabilita on, Tehran, Iran. Fatemeh dehghani 1 , *Hassan saeedi2, Behnam Hajiaghaei3
ObjecƟ ve Flat foot is common deformity in children that medial longitudinal arch is decreased, w... more ObjecƟ ve Flat foot is common deformity in children that medial longitudinal arch is decreased, which if not treated in childhood may lead to pain and other problems in adulthood. Insoles and orthopedic shoes usually prescribed for treatment of flat foot in children, but the biomechanical impact of these devices is not yet clear. The purpose of this study is comparison of two convenƟ onal orthoses intervenƟ on in Iran, including medical shoe and funcƟ onal foot orthosis on staƟ c balance by measurement of displacement of center of pressure and cop sway velocity in children with flexible flat foot . Materials and Methods This Quasi experimental study were accomplished on 30 children with flat foot and 10 healthy children for achievement of normal data in healthy children. Children stood unilaterally on force plate of Neurocom and in order to measurement of balance, displacement of center of pressure and COP (Center of Pressure) sway velocity were recorded. Results The results related...
Introduction: Biomechanical studies have frequently shown a close relationship between the knee a... more Introduction: Biomechanical studies have frequently shown a close relationship between the knee and ankle joint movements. ACL-deficiency may change the foot pressure pattern of the ACL-deficient knee subjects. The current study aimed to investigate the pattern of the foot pressure in coper and non-coper ACL-deficient knee subjects during standing on one and both feet. Methods and Materials: This case-control study was conducted on 12 coper and 12 non-coper ACL-deficient knee subjects and 25 age-sex matched healthy subjects. The subjects were tested barefoot during single and bilateral standing on the platform of a Zebris pedobarograph tool. The outcome measures included the measurements of the pressures of each part of the foot during the tests. Results: The results showed a significantly decreased total pressure only between the non-coper and control groups during double leg stance test. In terms of the forefoot pressure, a significant increased pressure was shown only in the non-...
In this study, the kinematic effect of two molding methods in the manufacture of foot orthoses on... more In this study, the kinematic effect of two molding methods in the manufacture of foot orthoses on ankle joint was examined. The aim of this study was to determine a more beneficial method about ankle kinematics in the manufacture of insoles for people with flexible flat foot. Ten males aged 19 to 27 years, with normal BMI and normal gait pattern participated in this study, all of them had flexible flatfoot. Each person wearing special shoes on three situations: stepped without the insole, with the Slipper cast insole and Circumferential wrap method insole and in each situation completed a walk cycle. The kinematic data were collected and measured for each subject under three assumed positions by VICON motion analysis system. For comparison and analysis of three assumed situation, repeated measures test (ANOVA) was used. The results of this study show that the use of two molding method, had no immediate effect on reducing the average maximum eversion angle of the ankle. Eversion spee...
Background: Drop-foot syndrome is a disorder in which the dorsiflexor muscles are weakened or com... more Background: Drop-foot syndrome is a disorder in which the dorsiflexor muscles are weakened or completely paralyzed, leading to foot slapping after the initial contact and foot-dragging during the swing phase. Passive and hybrid passive ankle-foot orthoses (AFOs) are often prescribed as an intervention for this disorder; however, the effects of these AFOs on kinetic parameters during the gait of drop-foot patients seem unclear. This study aimed to compare the affected lower limb joints of ankle, knee, and hip kinetics parameters (moments and powers) during walking in drop-foot patients using an innovative AFO storing-restoring hybrid passive AFO, named “Comfort Gait” and posterior leaf spring (PLS) AFO. Methods: Ten drop-foot patients were recruited in the current study to walk at a comfortable self-selected speed while wearing two different AFO selections. Kinetic parameters with a motion capture system were obtained for these patients. Results: The results of this study revealed a ...
Background: Socket design is thought to improve gait performance and symmetry as the other compon... more Background: Socket design is thought to improve gait performance and symmetry as the other components of the prosthesis do. This study focused on the comparison of two different sockets in transfemoral amputee patients to evaluate the influence of the socket designs on gait symmetry and various spatiotemporal gait parameters. Methods: Two transfemoral amputees participated in this case series study. They were asked to walk with the quadrilateral and the new modified sockets along a 10-meter walkway. The marker-based motion capture system recorded the spatiotemporal gait data during all walking trials. Kinematic data were compared between the two test conditions using the Wilcoxon signed-rank test and Symmetry Index. Results: The new socket increased velocity and cadence and reduced step width in both amputees, compared with the quadrilateral sockets. However, a good symmetry was observed in step length, stride length, step time, and stride time within two limbs by both sockets (SI ≤...
International Journal of Engineering and Advanced Technology, 2019
Nowadays security has become a great concern in the field of computer science and information tec... more Nowadays security has become a great concern in the field of computer science and information technology. In order to protect data from unintended users and to achieve a desirable level of security, several cryptographic algorithms based on various technology have been proposed. Linear Feedback Shift Register (LFSR) may play an important role in the design of such cryptographic algorithms. LFSR based cryptographic algorithms are often lightweight in nature and are more suitable for resource constraining devices. In this paper we present a detailed analysis of LFSR and design of LFSR to implement cryptographic algorithms.
International journal of clinical and experimental medicine, 2015
Left ventricular hypertrophy (LVH) represents a major predictor of the development of cardiovascu... more Left ventricular hypertrophy (LVH) represents a major predictor of the development of cardiovascular (CV) complications. Over-hydration (OH) is an important uremic risk factor associated with LVH and increased CV morbidity and mortality in peritoneal dialysis (PD) patients. In the present study we evaluated the prevalence of sub-clinical OH (SCOH) among PD patients and its effects on left ventricular mass (LVM). In this cross sectional study hydration status, blood pressure, glucose load, systemic inflammation and LVM were evaluated in 43 clinically stable patients on maintenance PD for 24-76 months. The hydration status was assessed by whole-body bio-impedance spectroscopy (BIS). Peripheral edema and any evidence of pulmonary congestion were considered clinical signs of OH. OH ≥ 1.5 L was detected in 26 (60.5%) of the study participants; the OH in 19 (73.1%) of them was sub-clinical. Only 23.5% (4/17) of patients with OH < 1.5 L had LVH compared to 68.4% (13/19) of those with SC...
Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis, 2012
The effects of previous abdominal operations and intraperitoneal adhesions on the outcome of peri... more The effects of previous abdominal operations and intraperitoneal adhesions on the outcome of peritoneal dialysis catheters.
Maintaining support in people with ... [3] Orthotics and prosthetics in ... [4] Iranian casualtie... more Maintaining support in people with ... [3] Orthotics and prosthetics in ... [4] Iranian casualties during the eight years of Iraq-Iran ... [5] Quality of life: The assessment, analysis and interpretation of patient-reported ... [6] The value of adding the Quality of Life Enjoyment and Satisfaction Questionnaire to outcome assessments of psychiatric inpatients with mood and affective ... [7] Musculoskeletal pain and overuse syndromes in adult acquired major upper-limb ... [8] Depression and incident lower limb amputations in ... [9] Amputees in limburg: Incidence, morbidity and mortality, prosthetic supply, care utilisation and functional level ... [10] Prosthetics research study ... [11] Scientific and clinical problems in indexes of functional ... [12] Functional assessment measures in ... [13] Prosthesis evaluation questionnaire for persons with lower limb ... [14] Lower limb prosthetic outcome measures: a review of the ... [15] A systematic review of functional and quality of life assessment after major lower ... [16] Use of the prosthesis evaluation ... [17] Guidelines for the process of cross-cultural adaptation of ... [18] Prosthesisrelated QOL of the people with amputation in ... [19] Comparison of prosthetic outcomes between adolescent transtibial and ... [20] Measuring long-term outcome in people with lower limb ... [21] Measuring mobility in people with lower limb amputation: Rasch analysis of ... [22] Cross-cultural validation of the ... [23] Cross cultural equivalence testing of the ... [24] The prosthesis evaluation questionnaire: Reliability and cross-validation of ... [25] Translating health status questionnaires and ... [26] Research Methods in ... [27] Measurement in medicine: a practical ... [28] Quantifying test-retest reliability using the intraclass correlation coefficient and ... [29] Cronbach's alpha: A tool for assessing ... [30] How to choose outcomes relevant to the client and ... [31] The short form health survey ...
Objectives: The main objective of this study was to culturally adapt the original English version... more Objectives: The main objective of this study was to culturally adapt the original English version of the Physical Activity Scale For Individuals with Physical Disabilities (PASIPD) for the Persian-speaking patients with Lower-Limb Amputations (LLAs) and to evaluate its reliability and construct validity. Methods: This research was a multicenter cross-sectional and repeated measure study. The cultural adaptation process was conducted according to an accepted international guideline. A total of 197 Persian-speaking individuals with LLA were recruited to investigate the reliability and validity of the PASIPD. Reliability analyses were assessed by Cronbach α and the Pearson product-moment correlation coefficient. The Association between the PASIPD scores and the prosthetic limb user survey of mobility scores was examined to evaluate the convergent validity of the PASIPD. Known-groups validity was assessed based on sex, amputation causes, and amputation levels. Results: The PASIPD had an...
Background and Objectives: Stroke is a life-threatening disease that can lead to walking disorder... more Background and Objectives: Stroke is a life-threatening disease that can lead to walking disorders. The orthosis that is generally prescribed for the patients in this situation is ankle-foot orthosis (AFO). For orthotic treatment to be effective, it is important to evaluate the quality of treatment, and one of the most important indicators is the level of patient satisfaction. The present study was conducted to evaluate the level of satisfaction and the factors affecting it in stroke patients who used AFOs made by Orthosis and Prosthesis (O&P) Centers in Tehran. Methods: The present study was a descriptive-analytical study conducted on 64 stroke patients who were referred to O&P centers and had used AFO in Tehran City, Iran, in 2021. The data were collected through an interview. The level of satisfaction of stroke patients was examined through an opus questionnaire. Results: The mean±SD overall satisfaction, satisfaction with services, and satisfaction with the device in patients we...
BACKGROUND Radiographic imaging has been considered the gold standard in evaluating the skeletal ... more BACKGROUND Radiographic imaging has been considered the gold standard in evaluating the skeletal alignment of the foot in static weightbearing. The effects of foot orthoses on the alignment of foot bones have been mostly evaluated using lateral view x-rays. The posterior-anterior view has not been investigated extensively. OBJECTIVES To investigate the effects of 2 foot orthoses: University of California Biomechanics Laboratory Orthosis (UCBL) and a prefabricated orthosis (P-FFO) on the alignment of foot bones on anterior-posterior x-rays in young people with symptomatic flexible flatfoot (SFF). STUDY DESIGN This is a randomized, crossover study. METHODS Fifteen participants (mean [SD], 23.67 ± 2 years) with SFF were randomly imaged in 3 different conditions: shoes only, shoes + P-FFO, and shoes + UCBL. The talonavicular coverage, the first and the second talometatarsal angles, the intermetatarsal angle, and the cuboid abduction angle (CAA) were measured on weightbearing, anterior-posterior x-ray images for each condition. RESULTS Both orthotic designs demonstrated a significant reduction in the talonavicular coverage, the first and the second talometatarsal angles, and the CAA compared with the shoe-only condition (P < .001). The talonavicular coverage angle reduced by ∼11% using P-FFO compared with UCBL (P < .005). No significant differences were observed for other angles between the 2 orthotic conditions. CONCLUSIONS Both orthotic conditions improved the talonavicular coverage, first and the second talometatarsal angle, and CAA in young people with SFF. The walls of the UCBL orthosis did not result in further correction of the talonavicular coverage angle compared with the prefabricated FFO design.
ABSTRACT Introduction This study evaluated the efficacy of two different medial linkage mechanism... more ABSTRACT Introduction This study evaluated the efficacy of two different medial linkage mechanisms (sliding mechanism [SM] and medial linkage mechanism associated with reciprocating gait motion (MLRGM), used within otherwise identical knee-ankle-foot orthoses (KAFOs) on patients with spinal cord injury (SCI). Methods Three volunteer subjects with SCI were fitted with a KAFO equipped with 1) an SM and 2) a medial linkage mechanism (MLRGM). Subjects walked at their self-selected speed along a flat walkway to enable a comparison of walking speed, endurance, and the resulting physiological cost index to be performed. Results The use of a KAFO fitted with the MLRGM resulted in improvements in walking speed, distance walked, and energy costs when compared with the more standard SM. However, the time required to don the KAFO increased with use of the MLRGM, but doffing time was approximately equal for both types. Conclusions This study demonstrated that the use of a KAFO with an MLRGM could provide significant benefits for patients with SCI when compared with a KAFO with a standard SM.
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Papers by Hassan saeedi