OSTEONECROSIS OF THE FEMORAL-HEAD TREATED WITH CEMENTLESS TOTAL HIP-ARTHROPLASTY - A COMPARISON WITH OTHER DIAGNOSES

Primary cementless Porous Coated Anatomic total hip arthroplasty was c arried out in 36 hips in 29 patients with osteonecrosis (ON) patients and in 36 hips in 33 patients without ON. The ON was alcohol related i n it, steroid induced in 5, post-traumatic in 4, and idiopathic in 16 patients. The average follow-up period was 6 years. Clinical evaluatio n demonstrated 77.8% excellent or good results in the patients with ON , with the average Harris hip scores improved from 36.8 to 83.5. No re vision of a prosthesis has yet been performed in the patients with ON. The patients with alcohol-related and steroid-induced ON had inferior clinical results when compared with the patients without ON. There we re no statistically significant differences in the clinical results be tween the patients with post-traumatic or idiopathic ON and the patien ts without ON.