Biomedical subjects
P M Riley
Publications and source records attributed to P M Riley.
Hazards of internal fixation in the treatment of slipped capital femoral epiphysis.
We reviewed the records of 202 patients (308 hips) in whom a slipped capital femoral epiphysis had been fixed with pins or screws. A serious complication that was directly related to the use of internal fixation developed in eighty hips (26 per cent). The rate of complications in the 202 patients was 40 per cent. In thirty-six (18 per cent) of the 202 patients, an additional procedure was done to correct a pin-related complication. Forty-one hip joints had been penetrated by a pin. Other complications included avascular necrosis (fourteen hips), chondrolysis (nine), fracture (one), infection (one), further slippage (one), sciatic-nerve injury (one), and breakage of a screw (eight). Ways of decreasing the incidence of complications of fixation were explored.
Cardiovascular collapse during laparoscopy: a report of two cases.
Cardiovascular collapse is a rare but serious complication of laparoscopy. Presented here are two cases of sudden cardiovascular collapse during laparoscopy. Possible causes include severe atypical vagal reactions and carbon dioxide embolism. Arterial blood gases indicated pulmonary vascular shunting.
Letter: Rupture of right ovarian artery aneurysm during delivery.
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Pitfalls in treatment of Legg-Calvé-Perthes disease using proximal femoral varus osteotomy.
A femoral varus osteotomy can be used to contain the femoral head in Legg-Calvé-Perthes (LCP) disease if certain pitfalls can be avoided. We reviewed 74 patients who underwent 79 femoral varus osteotomies. The study addressed the pitfalls that should be avoided with this technique. It was concluded that the amount of varus angulation should barely position the femoral head beneath the lateral rim of the acetabulum, avoiding varus less than 105 degrees, and that consideration should be given to performing a greater trochanteric epiphysiodesis at the time of initial femoral osteotomy. The short-term results reflect a positive attitude toward femoral varus osteotomy in treatment of LCP if these pitfalls can be avoided.