[Results of hip arthroplasty using Gérard's coupled, non-cemented cups. Analysis of 92 cases reviewed]

The authors have reviewed 92 cases of uncemented surface hip replacements with a minimum follow-up of 3 years. They were operated on using the Gérard technique which must be very precise to avoid devascularisation of the femoral head. 17 failures had to be operated on again. The main indications were necrosis of the femoral head and degenerative arthritis without excentration in patients aged between 50 and 60 years. In this type of patient, satisfactory results were obtained in more than 80%. It is concluded that this type of hip arthroplasty is valuable, provided there are good indications and a precise technique. It should be avoided in elderly, obese and porotic patients, in whom a total hip prosthesis is a better solution.