Herbert Resch

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John Hutchinson

Royal Veterinary College

Teresa Marat-Mendes

ISCTE - University Institute of Lisbon (ISCTE-IUL)

Mafalda Sampayo

ISCTE - University Institute of Lisbon (ISCTE-IUL)

David Seamon

Kansas State University

Amir Manbachi

Johns Hopkins University

Manuel Hernández Fernández

Universidad Complutense de Madrid

Stefano Mazzoleni

Politecnico di Bari

Viacheslav Kuleshov

Stockholm University

Roberto Colombo

Università Cattolica del Sacro Cuore (Catholic University of the Sacred Heart)

Can Kosukcu

Hacettepe University

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Papers by Herbert Resch

A perilunate dislocation with the hand in a 90° radial deviation

Sports Orthopaedics and Traumatology Sport-Orthopädie - Sport-Traumatologie, 2015

ABSTRACT Perilunar dislocation is a rare injury. This condition is only seen in 0.2% of all wrist... more

Defect Characteristics of Reverse Hill-Sachs Lesions

The American journal of sports medicine, Jan 8, 2016

Little scientific evidence regarding reverse Hill-Sachs lesions (RHSLs) in posterior shoulder ins... more Little scientific evidence regarding reverse Hill-Sachs lesions (RHSLs) in posterior shoulder instability exists. Recently, standardized measurement methods of the size and localization were introduced, and the biomechanical effect of the extent and position of the defects on the risk of re-engagement was determined. To analyze the characteristics and patterns of RHSLs in a large case series using standardized measurements and to interpret the results based on the newly available biomechanical findings. Case series; Level of evidence, 4. In this multicenter study, 102 cases of RHSLs in 99 patients were collected from 7 different shoulder centers between 2004 and 2013. Patient- as well as injury-specific information was gathered, and defect characteristics in terms of the size, localization, and depth index were determined on computed tomography or magnetic resonance imaging scans by means of standardized measurements. Additionally, the position (gamma angle) of the posterior defect ...

In Vivo Analysis of Atlantoaxial Motion in Individuals Immobilized With the Halo Thoracic Vest or Philadelphia Collar

Spine, May 1, 2009

In vivo biomechanical comparison of the halo thoracic vest (HTV) and the Philadelphia collar (PC)... more In vivo biomechanical comparison of the halo thoracic vest (HTV) and the Philadelphia collar (PC). To delineate the capacity of both orthoses for immobilization of the atlantoaxial complex (AAC), e.g., for their use in odontoid fracture care. Stable odontoid fractures can be treated with external immobilization using, e.g., a PC or a HTV. Although the HTV confers higher morbidity, particularly in elderly patients, with a similar union-rate in odontoid fracture care compared with the PC, many surgeons are still prone to use the HTV instead of the PC because the former is thought to accomplish increased rigidity at the AAC. Because application of the HTV using pins is an invasive procedure, there is a lack of biomechanical in vivo data on the &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;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;quot;real&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;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;quot; rigidity conferred by a HTV in comparison with a PC. Twenty volunteers were subjected to flexion/extension radiographs immobilized in a modified HTV or a PC. The radiographs were performed in extreme position of flexion in sitting position and extension in standing position. The PC was fitted as usual. The 4 cortical pins of a normal clinically used HTV were replaced by 12 modified distance pins. The halo-ring was fixed to the head by tightening of the 12 pins in an alternating fashion, thus yielding a hexapod-like strong fixation between the head and the HTV. The procedure was uncomfortable but there were no adverse events from the HTV placement. Radiographs were analyzed for the segmental rotation angle of C1-C2 in sagittal plane (SRA C1-C2) and the absolute rotation angle of C2-C7 (ARA C2-C7) using the Harrison tangent method. Separation angles (rSRA C1-C2 and rARA C2-C7) were calculated from flexion/extension views. Two observers measured all angles. The means of the measurements were used for statistical analysis. The interobserver reliability was expressed by calculating intraclass correlation coefficients (ICCs). RESULTS.: Mean age of 20 volunteers was 30.9 +/- 4.2 years. Calculation of the ICCs showed good to excellent interobserver reliability for all angular measurements (ICC = 0.95-0.98). Concerning restriction of subaxial sagittal plane motion, the HTV was more effective than the PC. The difference for the rARA C2-C7 between the PC (mean 20.7 degrees) and HTV (mean 9.2 degrees) yielded significance (P = 0.01). But, concerning restriction of flexion/extension at the AAC, there was no statistical significant difference for the rSRA C1-C2 between the PC and HTV (P = 0.3). The PC (mean 1.3 degrees) was even superior to the HTV (mean, 3.3 degrees) in restricting sagittal motion at C1-C2. In comparison to normal atlantoaxial motion was restricted by 88.5% with the PC and 70.8% with the HTV. In light of the results and a selected review of literature, a treatment algorithm for the elderly patient with odontoid fracture is presented. Under the extremes of flexion and extension bendings, the current study demonstrated that there was no significant difference in restriction of sagittal motion at C1-C2 when using the PC instead of the HTV in a group of 20 young normal adults. In light of the current biomechanical data and a selected review of literature, it is concluded that the use of a PC is sufficient for the treatment of stable odontoid fractures.

S100B serum protein cannot predict secondary intracranial haemorrhage after mild head injury in patients with low-dose acetylsalicylic acid prophylaxis

Brain injury, Jan 18, 2015

The goal of this study was to investigate if S100B serum protein could predict secondary intracra... more The goal of this study was to investigate if S100B serum protein could predict secondary intracranial haemorrhagic events (SIHEs) after mild head injury (mHI) in patients taking low-dose acetylsalicylic acid (LDA), making routinely repeated head computed tomography (RRHCT) scans unnecessary. Three hundred and eight-two patients with mHI, older than 60 years and taking LDA prophylaxis were enrolled. Primary head CT and RRHCT scans within 3 and 48 hours to trauma were performed. Additionally, S100B serum protein levels were evaluated at admission and predictive power for SIHEs was analysed. Fifty-nine per cent were female and the mean age of all included patients was 81.8 ± 8.9 years. In four patients SIHEs were diagnosed. Sensitivity and the negative predictive value of S100B serum protein (cut-off value 0.10 µg l(-1)) were 75.0% and 98.6%, respectively. Specificity was 19.0% and the positive predictive value 1.0% (306 false positive values). In patients without bleeding, the median ...

[Prognosis of epidural hematoma: is emergency burr hole trepanation in craniocerebral trauma still justified today?]

Der Unfallchirurg

We made a retrospective study of the records of 80 patients with epidural haematoma, to investiga... more We made a retrospective study of the records of 80 patients with epidural haematoma, to investigate whether delay between injury and surgery and neurological status upon admission affect outcome after 3-6 months. Outcome was classified on a four-grade scale, grade 1 meaning full recovery and grade 4, death. Overall mortality was 13%. Patients operated on within 7 h after injury made a full recovery in 52%, and mortality in this group was 6%. Patients operated on between 7 h and 14 h after injury made a full recovery in 20%; mortality was 16%. Among the patients who were not comatose on admission a good outcome was achieved in 55% and mortality was 3%. The outcome in patients who were comatose on admission was rated grade 1 in 15% and grade 4 in 25%. The proportion of comatose patients and the mortality were higher in patients transferred from general hospitals. Textbook signs of epidural haematoma are not reliable aids to diagnosis and localization; for example a lucid interval occurred in only 58% of our patients. It is concluded that emergency burr hole trepanation might improve the outcome in patients showing signs of brain stem dysfunction after head injury, but prior computed tomography is necessary to guide such an intervention at the district hospital level.

$Research paper thumbnail of Classification of proximal humeral fractures based on a pathomorphologic analysis$

Classification of proximal humeral fractures based on a pathomorphologic analysis

Journal of Shoulder and Elbow Surgery, 2015

The purpose of this study was to analyze the pathomorphology of proximal humeral fractures to det... more The purpose of this study was to analyze the pathomorphology of proximal humeral fractures to determine relevant and reliable parameters for fracture classification. A total of 100 consecutive acute proximal humeral fractures in adult patients were analyzed by 2 non-independent observers from a single shoulder department using a standardized protocol based on biplane radiographs and 3-dimensional computed tomography scans. A fracture classification system based on the most reliable key features of the pathomorphologic analysis was created, and its reliability was tested by 6 independent shoulder experts analyzing another 100 consecutive proximal humeral fractures. The head position in relation to the shaft (varus, valgus, sagittal deformity) and the presence of tuberosity fractures showed a higher interobserver reliability (κ &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt; 0.8) than measurements for medial hinge, shaft, and tuberosity displacement, metaphyseal extension, fracture impaction, as well as head-split component identification (κ &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.7). These findings were used to classify nondisplaced proximal humeral fractures as type 1, fractures with normal coronal head position but sagittal deformity as type 2, valgus fractures as type 3, varus fractures as type 4, and fracture dislocations as type 5. The fracture type was further combined with the fractured main fragments (G for greater tuberosity, L for lesser). Interobserver and intraobserver reliability analysis for the fracture classification revealed a κ value (95% confidence interval) of 0.700 (0.631-0.767) and 0.917 (0.879-0.943), respectively. The new classification system with emphasis on the qualitative aspects of proximal humeral fractures showed high reliability when based on a standardized imaging protocol including computed tomography scans.

Comparing the osteogenic potential of bone marrow and tendon-derived stromal cells to repair a critical-sized defect in the rat femur

Journal of Tissue Engineering and Regenerative Medicine, 2015

Despite significant advancements in bone tissue-engineering applications, the clinical impact of ... more Despite significant advancements in bone tissue-engineering applications, the clinical impact of bone marrow stromal cells (BMSCs) for the treatment of large osseous defects remains limited. Therefore, other cell sources are under investigation for their osteogenic potential to repair bone. In this study, tendon-derived stromal cells (TDSCs) were evaluated in comparison to BMSCs to support the functional repair of a 5 mm critical-sized, segmental defect in the rat femur. Analysis of the trilineage differentiation capacity of TDSCs and BMSCs cultured on collagen sponges revealed impaired osteogenic differentiation and mineral deposition of TDSCs in vitro, whereas chondrogenic and adipogenic differentiation was evident for both cell types. Radiographic assessment demonstrated that neither cell type significantly improved the healing rate of a challenging 5 mm segmental femoral defect. Transplanted TDSCs and BMSCs both led to the formation of only small amounts of bone in the defect area, and histological evaluation revealed non-mineralized, collagen-rich scar tissue to be present within the defect area. Newly formed lamellar bone was restricted to the defect margins, resulting in closure of the medullary cavity. Interestingly, in comparison to BMSCs, significantly more TDSC-derived cells were present at the osteotomy gap up to 8 weeks after transplantation and were also found to be located within newly formed lamellar bone, suggesting their capacity to directly contribute to de novo bone formation. To our knowledge, this is the first study investigating the in vivo capacity of TDSCs to regenerate a critical-sized defect in the rat femur. Copyright © 2015 John Wiley &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;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; Sons, Ltd.

Scapular dyskinesis after Latarjet procedure

Journal of Shoulder and Elbow Surgery, 2015

Because of detachment of the pectoralis minor and variation of the vector of the conjoint tendons... more Because of detachment of the pectoralis minor and variation of the vector of the conjoint tendons, we hypothesized that the Latarjet procedure may alter scapular position and motion. The purpose of this study was to evaluate scapular position and motion in patients who underwent a Latarjet or a modified iliac crest bone graft transfer (ICBGT) procedure (J-bone graft). Forty-six consecutive patients treated for recurrent anterior shoulder dislocation between 2010 and 2012 were retrospectively enrolled. Twenty-three were treated with a Latarjet and 23 with an ICBGT procedure. Twenty Latarjet and 20 ICBGT patients were available at a mean follow-up of 20 months (min, 12; max, 60). We recorded the Western Ontario Instability Index, the Rowe Score, and the Subjective Shoulder Value. Scapulothoracic position was studied according to the dyskinesis yes/no method. Intraobserver and interobserver reliability of the dyskinesis assessment was assessed. Intraobserver and interobserver reliability of scapula dyskinesis assessment was high (Latarjet: intratester, κ = 0.84; intertester, κ = 0.75; ICBGT: intratester, κ = 0.78; intertester, κ = 0.71). Scapular dyskinesis was observed after 5 of 20 Latarjet and after 0 of 20 ICBGT procedures (P = .047). Patients with dyskinesis had lower scores (Western Ontario Instability Index, P = .043; Rowe, P = .047; Subjective Shoulder Value, P = .046), but no statistically significant difference was found between the Latarjet and ICBGT groups. Two of the 5 scapular dyskinesis patients reached the SICK (Scapular malposition, Inferior medial scapular winging, Coracoid tenderness, and scapular dysKinesis) scapula syndrome definition. Scapular dyskinesis was found in 5 of 20 patients who underwent a Latarjet procedure. Dyskinesis may be related to the detachment of the pectoralis minor, and variation of the vector and the working length of the coracobrachialis and the short head of the biceps.

Posttraumatische Arthrose des Glenohumeralgelenks

Der Unfallchirurg, 2015

ABSTRACT Arthroplasty of symptomatic sequelae after fractures of the proximal humerus is a demand... more ABSTRACT Arthroplasty of symptomatic sequelae after fractures of the proximal humerus is a demanding procedure for surgeons. Exact preoperative planning is crucial in order to achieve acceptable functional results. Discussion of preoperative considerations in planning the procedure and choosing the appropriate implant taking the osseous anatomy and surrounding soft tissue situation into consideration. Selective literature review and description of personal experience. The geometry and consolidation status of bone fragments as well as the conditions of the surrounding soft tissue have to be taken into account and influence the choice of implant used. Insufficient planning will not only cause intraoperative technical problems but can also greatly influence the subjective patient assessment of the postoperative outcome. Unequal strain distribution can cause early loosening of components resulting in malfunctioning of the implant. In this respect, knowledge of the position and consolidation status of fractured tuberosities with respect to the humeral shaft is essential and allows an approximate estimation of the achievable outcome. This is taken into account by the classification of Boileau which can also help to decide on which type of implant to use. Because such cases are scarce, reported results in the literature are heterogeneous, which is discussed in this article. Each case needs a thorough and individualized preoperative assessment along with exact planning and should therefore be reserved for experienced shoulder surgeons only.

$Research paper thumbnail of Midterm outcome and complications after minimally invasive treatment of displaced proximal humeral fractures in patients younger than 70 years using the Humerusblock$

Midterm outcome and complications after minimally invasive treatment of displaced proximal humeral fractures in patients younger than 70 years using the Humerusblock

Injury, 2015

The Humerusblock (HB) represents a minimally invasive implant allowing for the stabilisation of p... more The Humerusblock (HB) represents a minimally invasive implant allowing for the stabilisation of proximal humeral fractures after closed or percutaneous reduction. The aim of the study was to perform a general clinical and radiological midterm follow-up focusing on the quality and complications in a large series of patients of younger age (&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;70 years). A total of 126 patients with an average age of 53.6 years treated surgically using the HB device were evaluated clinically using the Constant score (CS) and radiologically by biplanar radiographs after a mean follow-up time of 59 months. Thirty-three patients had a two-part fracture, 58 a three-part fracture and 35 a four-part fracture. Ultrasound imaging for bilateral rotator cuff evaluation was performed, and complications regarding implant failure, revision rate and post-traumatic avascular necrosis (AVN) were analysed. The average CS was 77.3 points for the affected shoulder and 86.5 points for the unaffected shoulder (P=0.001). The subjective shoulder value was 84.2%. Two-part fractures achieved 77.5 points, three-part fractures 81.7 points and four-part fractures 69.8 points. Surgical neck non-union was observed in 1.3% and AVN was observed in 11% associated with a CS of 46.4 points. Implant failure occurred in 9.6%. Varus malposition was present in 36%, and it was clinically relevant when exceeding 25°. Percutaneous fracture treatment using the HB achieves good functional outcomes with an acceptable complication rate. The rate of AVN was surprisingly high, especially in four-part fractures (26%), which presumably is due to the longer follow-up period. Varus malalignment was clinically relevant when exceeding 25°. Retrospective case series (evidence-based medicine (EBM) level IV).

Open Bankart Repair for the Treatment of Anterior Shoulder Instability without Substantial Osseous Glenoid Defects: Results After a Minimum Follow-up of Twenty Years

The Journal of Bone & Joint Surgery, 2015

Neglected osseous glenoid defects are thought to be one of the reasons for the reported high rate... more Neglected osseous glenoid defects are thought to be one of the reasons for the reported high rates of recurrent instability at long-term follow-up after Bankart repair. We hypothesized that open Bankart repair for the treatment of anterior glenohumeral instability in the absence of a substantial osseous glenoid defect would result in a lower long-term recurrence rate than has been reported in previous long-term studies. Forty-seven patients were treated with a primary modified open Bankart repair for recurrent anterior shoulder instability between 1989 and 1994. Double-contrast computed tomography scanning was used to exclude patients with a substantial osseous glenoid defect. Forty patients (85.1%) were available for subjective and objective follow-up at a minimum of twenty years (maximum, twenty-five years). Twenty-six patients (65%) underwent clinical examination as well as bilateral shoulder radiography, and fourteen (35%) completed a self-assessment questionnaire and were interviewed by telephone. Seven patients (17.5%) had a recurrence of instability, and six of them had the instability occur after more than eight years without symptoms. The mean Western Ontario Shoulder Instability Index score (and standard deviation) was 256.7 ± 284.8 points; the mean Rowe score, 88.7 ± 12.0 points; and the mean Subjective Shoulder Value, 90.1% ± 10.5%.The mean range of motion of the affected shoulder was decreased by 4° of abduction (p = 0.009), two levels of internal rotation (p = 0.003), 5° of internal rotation in 90° of abduction (p = 0.005), 7° of external rotation in neutral position (p &amp;amp;amp;amp;amp;amp;lt; 0.001), and 7° of external rotation in 90° of abduction (p = 0.004) compared with the contralateral side. The collective instability arthropathy (CIA) index was 0.92 for the affected side and 0.35 for the contralateral side. Open Bankart repair provides good results twenty years after surgery in terms of subjective and objective outcome measurements. However, the long-term failure rate remains high despite the exclusion of substantial osseous glenoid defects. Recurrence of instability seems to be associated with an increased shoulder-specific activity level. Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Anterior Shoulder Instability Is Associated With an Underlying Deficiency of the Bony Glenoid Concavity

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2015

To determine whether anterior shoulder instability is associated with an inherent deficiency of t... more To determine whether anterior shoulder instability is associated with an inherent deficiency of the bony glenoid concavity, which results in a reduced bony shoulder stability ratio (BSSR). In this case-control study, we searched the institutional database for patients treated for unilateral recurrent anterior shoulder instability. We included 30 consecutive patients with atraumatic instability, 30 consecutive patients with traumatic instability, and 36 matched healthy controls, for a total of 96 shoulders. Computed tomography images of the unaffected shoulders of the instability patients were compared with images of the ipsilateral shoulders of age- and sex-matched healthy controls for differences in glenoid morphology. By use of a mathematical formula based on Pythagorean trigonometric identities, the mean BSSRs of the different groups were calculated and compared. Validation of the formula was accomplished by finite element analysis. The mean BSSR of atraumatic instability patients was 17.9% ± 8.5% and therefore significantly lower than the mean BSSR of 31.1% ± 7.5% of the control group (13.2%; 95% confidence interval [CI], 9.1% to 17.4%; P &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; .001). The mean BSSR of the traumatic instability group was higher, at 23.9% ± 8.5% (P = .007), but still showed a deficit of 7.2% (95% CI, 2.8% to 11.7%; P = .002) compared with controls. The atraumatic instability group showed a mean reduction of 0.9 mm (95% CI, 0.6 to 1.1 mm; P &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; .001) in concavity depth and a decrease of 2.9° (95% CI, 0.4° to 5.3°; P = .021) in concavity retroversion, whereas the traumatic instability patients had a reduction of 0.4 mm (95% CI, 0.1 to 0.8 mm; P = .006) in concavity depth. Neither of the instability groups differed significantly from their respective controls in terms of glenoid concavity diameter, head radius, or glenoid vault morphology. Anterior shoulder instability is associated with an inherent flattening of the bony glenoid concavity, which significantly decreases the BSSR. The deficiency appears to be more pronounced in patients with atraumatic instability than in patients with traumatic instability. Level III, case-control study.

Minimum twenty-year follow-up after Bankart repair for the treatment of anterior shoulder instability without significant bony glenoid defect

Sports Orthopaedics and Traumatology Sport-Orthopädie - Sport-Traumatologie, 2015

Proximale Humerusfraktur — frische Verletzung

Spezialgebiete aus der Schulter- und Ellenbogenchirurgie 2, 2007

Scapula Winging

Die Scapula, 2015

Influence of defect size and localization on the engagement of reverse hill-sachs lesions

The American journal of sports medicine, 2015

Reverse Hill-Sachs (RHS) lesions can cause recurrent posterior shoulder instability because of en... more Reverse Hill-Sachs (RHS) lesions can cause recurrent posterior shoulder instability because of engagement with the posterior glenoid rim; however, the effect of defect size and localization have yet to be determined. Both size and localization are critical for the engagement of an RHS defect with the posterior glenoid rim. Controlled laboratory study. Ten RHS defects with predefined extent and localization were created through an anterolateral rotator cuff sparing approach in 10 fresh-frozen cadaveric shoulder specimens using a custom-made saw guide. Computed tomography scans of all specimens were completed, and standardized measurements were performed to determine the size (alpha angle) and localization (beta angle) of the defect as well as a combination of both parameters (gamma angle). Internal rotation motions were imposed on the shoulder joint in different arm positions and with varying amount of posterior translation by means of a robot-assisted shoulder simulator. The associa...

Low back pain among medical students

Acta orthopaedica Belgica, 2011

Low back pain (LBP) is known to affect both older and younger adults. Medical schools tend to hav... more Low back pain (LBP) is known to affect both older and younger adults. Medical schools tend to have time-consuming curricula, possibly perpetuating a sedentary lifestyle, and a high prevalence of LBP among medical students. The purpose of this study was to evaluate the extent of sedentary lifestyle and the 12-month prevalence of LBP in a sample group of medical students in comparison to a random sample of physical education students. A retrospective study involving a questionnaire-based inquiry of 103 medical students showed that they were approximately 2.5 times less physically active than the 107 physical education students (p < 0.001) and spent 3 more hours per day sitting (p < 0.001). The 12-month prevalence of (sub)acute and chronic LBP in the sample group of medical students was 53.4% (95% CI: 43.8%-63.0%), as compared to 60.7% (95% CI: 51.4% -70.0%) in the sample group of physical education students, yielding no statistically significant difference (p = 0.329). These dat...

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Shoulder arthroplasty for traumatic avascular necrosis: predictors of outcome

Clinical orthopaedics and related research, 2007

Posttraumatic avascular humeral head necrosis may require salvage shoulder arthroplasty in sympto... more Posttraumatic avascular humeral head necrosis may require salvage shoulder arthroplasty in symptomatic cases. We tested the hypothesis that associated tuberosity malunion negatively influences the final clinical outcome after shoulder arthroplasty. Thirty-eight patients with posttraumatic avascular necrosis of the humeral head were followed clinically and radiographically for a minimum of 5 years (mean, 8 years; range, 5-13 years). To quantify preoperative tuberosity malunion, two novel radiographic parameters were introduced: on the anteroposterior view, the greater tuberosity offset as a measurement of lateralization of the greater tuberosity; and on the axillary view, the posterior offset to quantify the degree of widening at the intertubercular groove. At last followup, the average Constant and Murley score had improved from 27 points preoperatively to 57 points postoperatively; shoulder range of motion had increased from 40 degrees abduction to 116 degrees, flexion from 45 degr...

Keine erhöhte Arthrosewahrscheinlichkeit bei Athleten mit vorderer Kreuzbandplastik nach isolierter vorderer Kreuzbandruptur

Physiologisches Remodeling des Knochenblockes nach Glenoid-Wiederherstellung mittels J-Span-Plastik bei posttraumatischer rezidivierender vorderer Schulterinstabilität

A perilunate dislocation with the hand in a 90° radial deviation

Sports Orthopaedics and Traumatology Sport-Orthopädie - Sport-Traumatologie, 2015

ABSTRACT Perilunar dislocation is a rare injury. This condition is only seen in 0.2% of all wrist... more

Defect Characteristics of Reverse Hill-Sachs Lesions

The American journal of sports medicine, Jan 8, 2016

In Vivo Analysis of Atlantoaxial Motion in Individuals Immobilized With the Halo Thoracic Vest or Philadelphia Collar

Spine, May 1, 2009

S100B serum protein cannot predict secondary intracranial haemorrhage after mild head injury in patients with low-dose acetylsalicylic acid prophylaxis

Brain injury, Jan 18, 2015

[Prognosis of epidural hematoma: is emergency burr hole trepanation in craniocerebral trauma still justified today?]

Der Unfallchirurg

$Research paper thumbnail of Classification of proximal humeral fractures based on a pathomorphologic analysis$

Classification of proximal humeral fractures based on a pathomorphologic analysis

Journal of Shoulder and Elbow Surgery, 2015

Comparing the osteogenic potential of bone marrow and tendon-derived stromal cells to repair a critical-sized defect in the rat femur

Journal of Tissue Engineering and Regenerative Medicine, 2015

Scapular dyskinesis after Latarjet procedure

Journal of Shoulder and Elbow Surgery, 2015

Posttraumatische Arthrose des Glenohumeralgelenks

Der Unfallchirurg, 2015

$Research paper thumbnail of Midterm outcome and complications after minimally invasive treatment of displaced proximal humeral fractures in patients younger than 70 years using the Humerusblock$

Midterm outcome and complications after minimally invasive treatment of displaced proximal humeral fractures in patients younger than 70 years using the Humerusblock

Injury, 2015

Open Bankart Repair for the Treatment of Anterior Shoulder Instability without Substantial Osseous Glenoid Defects: Results After a Minimum Follow-up of Twenty Years

The Journal of Bone & Joint Surgery, 2015

Anterior Shoulder Instability Is Associated With an Underlying Deficiency of the Bony Glenoid Concavity

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2015

Minimum twenty-year follow-up after Bankart repair for the treatment of anterior shoulder instability without significant bony glenoid defect

Sports Orthopaedics and Traumatology Sport-Orthopädie - Sport-Traumatologie, 2015

Proximale Humerusfraktur — frische Verletzung

Spezialgebiete aus der Schulter- und Ellenbogenchirurgie 2, 2007

Scapula Winging

Die Scapula, 2015

Influence of defect size and localization on the engagement of reverse hill-sachs lesions

The American journal of sports medicine, 2015

Low back pain among medical students

Acta orthopaedica Belgica, 2011

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Shoulder arthroplasty for traumatic avascular necrosis: predictors of outcome

Clinical orthopaedics and related research, 2007

Keine erhöhte Arthrosewahrscheinlichkeit bei Athleten mit vorderer Kreuzbandplastik nach isolierter vorderer Kreuzbandruptur

Physiologisches Remodeling des Knochenblockes nach Glenoid-Wiederherstellung mittels J-Span-Plastik bei posttraumatischer rezidivierender vorderer Schulterinstabilität

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