A noncemented total hip prosthesis.

Although total hip arthroplasty stabilized by cement has been a great step forward, loosening is becoming more and more frequent and constitutes a significant problem. This is a report of the design of a non-cemented prosthesis in which fixation of the prosthesis is secured by the in-growth of newly-formed bone into the irregularities of the metal. In more than 2000 cases with a follow-up of 5 1/2 years, this fixation design proves to be sound. The complications are relatively rare and the results are generally good.

[The use of a hinge distraction apparatus after arthrolysis and arthroplasty (author's transl)]. / Arthrolyse et arthroplastie sous distracteur articulaire.

The authors describe a hinge distraction apparatus which allows physiological movement of joints following surgical procedures such as arthrolysis or arthroplasty. The apparatus maintains some space between the bone ends and provides lateral stability. It is based on the principles of external fixation. The apparatus has been used for ankles, knees, and elbows. Thirty-eight patients were operated on. The technique is fully described. The results on experimental work in the dog are given. At the ankle, the authors have shown that the use of the apparatus allows the formation of fibrous tissue between the bone ends. The indications and results obtained at the level of the knee and elbow are discussed.

[Sequelae of acetabulum fractures treated by total hip prosthesis]. / Place de la prothèse totale dans les séquelles des fractures du cotyle

The authors have treated by total prosthesis 39 cases of fractures of the acetabulum, at the stage of severe sequellae. 21 of them had been initially treated conservatively, and 18 had been previously operated on. 23 times they used conventional prosthesis anchored with cement. 8 cases became loose and had to be re-operated on. 16 times an original prosthesis made of highly porous metal was used with no complication at the present time.