Osteochondroma of the lumbar spine. An unusual cause of sciatica.
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Biomedical subjects
K Gurr
Publications and source records attributed to K Gurr.
A preconditioned arthritic hip model.
The authors describe a reproducible, inexpensive, large animal model of a preconditioned arthritic hip that can be subjected to various types of surgical reconstructions to assess, compare, and improve their efficacy. In 76 sheep the right hip was denuded of articular cartilage and followed clinically, radiologically and histologically for up to 2 years. In 15 sheep the cartilage was removed and the subchondral bone penetrated, and in 61 the cartilage alone was removed. By 3 months all sheep had developed arthritic changes similar to those seen in humans, with osteophytes, cysts, bone erosions, and periarticular inflammation. The sheep in which the cartilage was removed and the subchondral bone penetrated developed a severe, rapidly destructive arthropathy. These sheep provide a good model for future projects to assess complex methods of surgical reconstruction in cases of deficient bone stock. The sheep in which the cartilage alone was removed developed a moderate, more gradual type of arthritis. These sheep provide a good model for future projects to assess various types of arthroplasties as they might apply to the majority of less destructive arthritic hips, as seen in clinical practice.
Animals↗
The three-part fracture of the proximal part of the humerus. Operative treatment.
A retrospective review of the cases of fifteen patients with a three-part fracture of the proximal part of the humerus is presented. Fourteen of the fractures were treated with tension-band wiring and one, with an AO buttress plate. The patients were evaluated for pain, range of motion, strength, and function of the involved shoulder and the radiographic result at an average of fifty-four months after the injury. At follow-up, the shoulders had an average of 126 degrees of active elevation, 29 degrees of active external rotation, 81 degrees of active abduction, and internal rotation to the second lumbar vertebra. The only early complication was failure of fixation in the patient who had been treated with a buttress plate. In two patients, radiographic evidence of avascular necrosis of the humeral head later developed, and one of them required revision to a hemiarthroplasty. In conclusion, we recommend operative treatment for the healthy, active individual who has a three-part fracture of the proximal part of the humerus. We found that the best results with these difficult fractures are obtained using tension-band wiring.
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