Abstract
Purpose of the Study: The outcome after revision knee arthroplasty with structural distal femoral allograft augmentation for major bone loss has been rarely reported in the literature. The aim of this study was to assess the outcome for patients managed with such a procedure in our hospital.
Materials and Methods: Since 2001, ten revision knee arthroplasties requiring structural distal femoral allograft for major bone loss were performed in nine patients who underwent surgery at mean age of 68.1±9.8 years and prospectively followed. All patients were operated by the same surgical team. The first assessment was completed for the patients during August 2005 for radiographic and clinical evaluation. The mean follow up time was 22.2±15.1 months.
Results: On radiographic analysis none of the allografts had resorbtion. Implant position
Was preserved in all patients. Two patients had postoperative complications: one had superficial wound infection without need of surgical revision, another patient needed angioplasty because of pseudoaneurisma of popliteal artery and temporary using of knee brace for mild medial instability. Clinical evaluation revealed that mean “Hospital for Special Surgery Score” had improved from 39.8 to 84.1 points and mean range of motions improved from 75.0±42.0 to 103.5±12.5 (p=0.05, paired t-test). Before the surgery all patients used a walker or a crutch, while only one of them used a cane and the remaining patients walked without any support after the operation.
Conclusions: Our preliminary results demonstrate that structural femoral allografts used in revision knee replacement improve clinical and functional outcomes. Further follow-up is planned.
The abstracts were prepared by Orah Naor, IOA Co-ordinator and Secretary. Correspondence should be addressed to Israel Orthopaedic Association, PO Box 7845, Haifa 31074, Israel.
