Papers by Olivier Delaere
Journal of Bone and Joint Surgery, American Volume, 1997
Clavicular fractures are occasionally responsible for lesions of the brachial plexus. The symptom... more Clavicular fractures are occasionally responsible for lesions of the brachial plexus. The symptoms are usually delayed and due to compression by hypertrophic callus, nonunion or a subclavian pseudoaneurysm. We describe a patient in whom a displaced bone fragment was pressing on the retroclavicular part of the brachial plexus, leading to early symptoms of a lesion of the posterior cord. Internal fixation of the clavicle and external neurolysis of the brachial plexus gave an almost full recovery.
Chirurgie de la Main, 2015
The natural history of the forearm started in water within the fins of some Devonian fishes. Some... more The natural history of the forearm started in water within the fins of some Devonian fishes. Some 385 million years later, through amazing adaptations, the forearm bones allowed the tetrapods world to colonize every other kinds of biotopes on Earth. Initially devoted to locomotion in amphibians, birds and reptiles, the forearm develops more ambitiously in the mammalian lineage. Adopting first an upright limb posture and bipedalism thereafter, the Hominidae forelimb acquires an extreme range of pro-supination and can be dedicated to other tasks, including tool making and handling. By developing unconstrained joints at the elbow and wrist level, as well as more and more specialized soft tissues like the triangular fibrocartilage complex, the human forearm reaches the most sophisticated compromise between strength, mobility and stability and becomes the hand's greatest ally.
The Journal of Hand Surgery British & European Volume
Rinsing rat femoral arteries with various fluids in experimental conditions similar to those in c... more Rinsing rat femoral arteries with various fluids in experimental conditions similar to those in clinical practice was found to have deleterious effects on the intimal and medial layers of the vessels. No statistically significant difference was found between the effects of Ringer's lactate and normal saline. Heparinized saline produced significantly less damage to the medial layer and less platelet cell deposition. Lignocaine 2% was found to be extremely damaging to the whole vessel wall, and highly thrombogenic. Nevertheless, all the arteries in each group remained patent 4 days after rinsing.
British journal of plastic surgery, 1999
Thirteen neurovascular palmar flaps for thumb tip coverage were reviewed: six O'Brien and sev... more Thirteen neurovascular palmar flaps for thumb tip coverage were reviewed: six O'Brien and seven Moberg flaps with a mean follow-up of 81 months. Both techniques were found to be safe and effective in preserving pulp sensibility, with a mean 2PD of 5 mm and a Semmes-Weinstein identical to the contralateral side in nine cases. The interphalangeal joint regained a normal range of motion, and did not seem to be affected by the perioperative flexion. The main residual complaints were persistent cold intolerance (present in all cases and severe in three), pulp instability (present in six and severe in two), and nail deformity. This last problem was more related to the injury. Despite these drawbacks, O'Brien and Moberg flaps remain the first choice for coverage of 1-2 cm pulp defects of the thumb.
Archives of Orthopaedic and Trauma Surgery - ARCH ORTHOP TRAUM SURG, 1989
Twenty pairs of dried macerated femora were submitted to progressive, physiologically oriented lo... more Twenty pairs of dried macerated femora were submitted to progressive, physiologically oriented loading. The aim of this work was to determine the role of trabecular bone, the importance of the bone mineral density of the femoral shaft, and the importance of the Singh index in the mechanical strength of the femoral neck. By means of an original technique, the influence of both the principal tensile and secondary compressive trabecular groups on the mechanical strength to bending stress has been demonstrated. The artificial destruction of these trabecular groups is responsible for a loss of strength of more than 50% in varus angulation while it has practically no effect in valgus angulation. On the other hand, the mechanical strength of the femoral neck is better correlated with the bone mineral density of the femoral shaft (r=0.74) than with the Singh index (r=0.50) or with age (r=0.15).
Plastic & Reconstructive Surgery, 2000
The use of a split muscle flap widens the indications of unilateral external fixation in the trea... more The use of a split muscle flap widens the indications of unilateral external fixation in the treatment of type IIIB open tibial fractures with large bone defects. The same frame can be used for early stabilization and for secondary distraction lengthening procedures. The use of a split flap allows an easy, safe, and painless pin migration. The combination of these techniques represents a very safe solution, especially for patients in poor general and vascular condition.
The Journal of Hand Surgery, 2003
a dorsal interosseous muscle is documented poorly in the literature and to our knowledge only has... more a dorsal interosseous muscle is documented poorly in the literature and to our knowledge only has been described by Ishizuki.l A systematic search probably would reveal a higher rate of these associated lesions. In the present series they did not influence the final result.
International Orthopaedics, 1991
A porous coated tibial plateau component, which was not loose, was removed 6 weeks after operatio... more A porous coated tibial plateau component, which was not loose, was removed 6 weeks after operation. An absence of bony ingrowth was demonstrated by histological and microradiographic examination. The radiolucent space was filled by young connective tissue and inflammation was indicated by the presence of a few macrophages or foreign body giant cells; there was also an increased number of mast cells near the metallic beads. Such inflammatory cells have not previously been reported around a firmly fixed joint prosthesis, but they have been associated with metallic particles. Since accumulations of mast cells can interfere with the process of bony ingrowth, further studies of removed porous coated prostheses should be made with adequate histological techniques so that the clinical significance of these cells can be better understood.
Clinical Rheumatology, 1991
Despite the lack of radiological signs, a femoral head showed histological and microradiographica... more Despite the lack of radiological signs, a femoral head showed histological and microradiographical features of osteonecrosis, 54 years after massive irradiation of the right hip. Intertrabecular spaces were invaded by connectivo-vascular tissue with focal accumulation of mast cells, and several resorption foci were filled with mononucleated cells. Moreover, all the microradiographs showed peculiar hypercalcified lines, sometimes containing empty osteocytic lacunae, the origin of which is difficult to precise. This study suggests that massive irradiation of weight-bearing epiphyses may be responsible for particularly long-term hypovascularity, osteonecrosis and disturbed bone remodeling.
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Papers by Olivier Delaere