O2375 CLINICAL AND RADIOLOGICAL RESULTS OF ACETABULAR REVISIONS IN MASSIVE ACETABULAR DEFICIENCIES, A 4 TO 7 YEARS FOLLOW UP STUDY

Abstract

Aim: This study is describes the clinical and radiological results of 28 hips with Paprosky Type 3 acetabular defects treated by impacted morsellised bone allograft technique and followed up for a mean period of 72 months. Method: The complete cohort of 27patients (28 hips) classiþed as severe acetabular deþciencies (Paprosky type 3) and got treated by impacted morsellised bone allograft technique was available for clinical and radiological review at mean follow up of 72 months (range 48 to 91 months). All the patients were assessed clinically according to the Harris hip-score. All radiographs were digitised using high resolution digitiser. Measurements of subsidence and migration were done using image analysis software. All the radiographs were examined for evidence of radiolucent lines in the three zones of DeLee and Charnley and graft incorporation was assessed from serial radiographs. Results: The results of revision surgery using this technique showed a clinical survival of 96.4% and radiological survival rate 92.85%. Conclusion: Our results have shown that the clinical and radiological results using impacted morsellised allograft technique have been extremely gratifying. The morphological changes seen in these grafts would indicate that the bone grafts utilised have not only incorporated but continue to function in a stable manner. The technique of impaction bone allograft using morsellised fresh frozen allograft appears to be a valuable biological option in revising cases with severe acetabular deþciencies with superior mid-term results.