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Biomedical subjects

J Benoit

Publications and source records attributed to J Benoit.

At least 109 records · Page 6Linked to original sources
PubMed1979

[Infected total knee prostheses treated by Papineau's technique and arthrodesis (author's transl)].

The technique of arthrodesis of the knee after removal of an infected total prostheses is described. It was used in four cases. In the first stage, the prostheses and cement were removed, the wound was left open and knee immobilized by Hoffman external fixation. Details of the fixation are given. The second stage of filling of the wound by cancellous chips was performed two weeks later. On average, the fixation was removed after seven months. Some mechanical experiments were made to establish the best type of fixation device.

Aged↗
PubMed1978

[Immobilisation hypercalcaemia. 1 case (author's transl)].

A 21-year-old man suffered severe (up to 15.5 mg%) and prolonged (7 months) hypercalcaemia as a result of immobilisation following severe trauma. During the period of hypercalcaemia, plasma parathormone and calcitonin levels were undetectable. A study using radioactive calcium revealed a very marked increase in bone resorption, a moderate increase in accretion and virtually no intestinal absorption. Iliac biopsy revealed dense calcification front and there was no osteoid substance. This hypercalcaemia appeared to be due to increased bone resorption, while the synthesis of osteoid substance seemed to be insufficient to permit an equivalent increase in calcium accretion.

Adult↗
PubMed1977

[Aseptic osteonecrosis in the renal transplant patient. Apropos of 27 surgically treated cases].

The authors have treated 27 cases of avascular necrosis of bone in patients following renal transplantation. They have noted some specific features--early onset after transplantation, multiple localization and rapid and severe progress of the lesion. The authors discuss the pathogenesis as it relates to cortico-steroids, bone dystrophy due to renal failure and the effects of dialysis. Surgical treatment requires special care because of the poor general condition of the patient. Operations have been done on 20 hips (12 forages, 1 cup arthroplasty, 2 Moore prostheses, 5 total prostheses) and 7 knees (1 forage, 6 removal of loose bodies). Two procedures were found to be valuable at the hip--forage at a very early stage and total prosthetic replacement. The indications for operation depend on the degree of functional disability. For the knee, necrosis affected both the femoral and tibial component resulting in effusion and locking. The only useful procedure seemed to be removal of loose bodies. In every case, surgical procedures must be conducted under careful and constant medical supervision.

Adolescent↗
PubMed1977

[Fatigue fractures: apropos of 8 cases].

Eight cases of fatigue fracture were observed by the authors. In two patients, they presented in metatarsal bones; others were in the lower end of the tibia, in the shaft of the fibula, in the patella, at the upper end of the fibula, in the shaft to the tibia and in the neck of the femur. The main features of these fractues, which occurred in previously intact bones, are reviewed. The role of previous muscle imbalance, or metabolic disturbance, (by age or in pregnancy) is discussed. Good results were obtained by simple immobilization. Surgery may be indicated in the two situations: 1. To eliminate the possibility of a bone tumour by biopsy and, 2. For internal fixation in special sites such as the femoral neck to avoid coxa vara or when healing is very slow, as occurs particularly in the femoral shaft.

Adult↗