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The results of a modified LeMaire anterior concrete ligament (ACL) lateral substitution procedure have been assessed using a variety of methods. Of the patients, 87.5 per cent obtained a satisfactory result 3-4 years after the operation. The post-operative morbidity was relatively minor.
Periosteum was obtained within 10 days of injury from the site of 17 adult tibial diaphyseal fractures during internal fixation. Osteogenic cells, non-osteogenic cells and vascular elements were identified in situ using a variety of techniques. In all cases, the periosteum was thickened with randomly distributed plaques of cartilage and bone. Cells covering newly formed bone trabeculae expressed...
This study investigates concurrent lesions of the knee that may be associated with bilateral simultaneous meniscal lesions. The MRI images of the knees of 22 patients with this condition were examined in detail. The results suggest a degenerative cause.
The post natal development of the growth plate was studied in the rabbit lower limb using an immunocytochemical technique which localized osteocalcin in situ. At birth, there is poor columnar organization of the physis and bone is not produced. Instead the predominant activity is cartilage remodelling. The columnar architecture develops later when endochondral ossification is also observed.
The biology of the growth plates of rabbits of different ages was studied using an immunocytochemical technique which localized osteocalcin. Immunoreactivity was observed in the cells of the groove of Ranvier. Other findings suggest that the groove is a separate structure from the cartilaginous physis and is the terminal end of the diaphysis/periosteum complex.
A prospective, randomized clinical trial was conducted to compare an intra-articular with an extra-articular reconstruction of the anterior cruciate ligament. Isokinetic muscle testing was carried out 6 months to 2 years following operation using the Biodex isokinetic dynamometer. The extra-articular procedure resulted in a lower deficit for the peak quadriceps and hamstring torques and the range...
A consistently reproducible non-union model has been created in the adult rabbit tibial diaphysis. After making an osteotomy, the marrow was removed, the periosteum was excised and a silastic sheath was wrapped around the shaft. The fracture cleft was invaded by a non osteogenic fibrous tissue following the removal of the sheath after an interval of 4 weeks.
The repair of a closed fracture of the adult tibial diaphysis was studied by an immunohistochemical technique which localized bone sialoproteinin situ. Immunoreactivity was observed in newly formed bone trabeculae, in the periosteum and endosteum and in the callus cartilage.
In an attempt to establish some principles for the use of strain gauges in monitoring fracture healing, four strain gauges were fastened onto the most proximal pin of a Shearer external fixator applied to a hardwood fracture model. Compression and bending loads were applied and the strain data were obtained. The results show that the location of the strain gauge on the circumference of the pin has...
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