Osteochondral hemiarthroplasty. An experimental investigation in baboons.

Hemiarthroplasty using osteochondral autografts and allografts were performed on 40 hip, 23 knee and 5 shoulder joints in baboons. Follow-up at one, two and three years revealed good results as assessed by clinical and radiological examination. Histological and radionuclide studies revealed cartilage viability in 70 to 80% of cases.