Abstract
Purpose
The purpose of this study is to evaluate the functional and radiographical results in patients younger than 30 years who underwent cementless third generation ceramic-on-ceramic total hip arthroplasty (THA) for avascular necrosis (AVN) of femoral head.
Materials and Methods
Forty one patients (55 hips) with a minimum 4-year follow-up were included in this study. There were 26 men and 15 women with a mean age of 25.6 years (range, 16 to 29 years). The average duration of follow-up was 5.7 years (range, 4.0 to 6.5 years). All surgeries were done by a single hip surgeon and third generation ceramic-on-ceramic articulation was used. Functional results were measured by Harris hip score (HHS) and WOMAC score. Radiographic evaluation was assessed for loosening and osteolysis according to Gruen's and Delee and Charnley's criteria.
Results
The average HHS improved from 53 preoperatively to 95 at last follow-up and WOMAC score improved from 72 to 25. Thirty nine patients (51 hips) are continuing their normal occupation. There was no aseptic loosening or osteolysis and no prosthesis had been revised. There was one patient who complained of continuous squeaking and two patients with Brooker grade I heterotopic ossification. There were no other major complications.
Conclusions
THA with third generation ceramic-on-ceramic bearings for AVN of femoral head especially in active and very young patients results in satisfactory clinical and radiological results at minimum 4 year follow-up. If long tem follow-up shows excellent results, then the age limit for THA can be lowered.
