Total Knee Arthroplasty Using Bone Graft in Neuropathic Knee: Preliminary Report

ABSTRACT

INTRODUCTION: Recently, total knee arthroplasty is being considered as an alternative to the arthrodesis for neuropathic knee. This study was performed to prove the results of the total knee arthroplasty using autograft or femoral head allograft. SUBJECTS AND METHOD: In 8 patients, total knee arthroplasty was performed from July 1992 to January 2002. PCL substituting type with extension rods, constrained condylar knee prostheses were used. In all cases, auto or allo-grafts were used. The follow-up period was an average 3 years and 6 months. HSS knee score and radiographic findings were analysed. RESULT: The preoperative HSS score was an average 42 points and follow up was a 89 points, which was more than good. The average range of motion was increased from 110 degrees to 122 degrees, femorotibial alignment was corrected to 6.1 degrees valgus. There was a no radiolucent line over 2mm and loosening of implant. But, one case had a partial absorption of medial tibial bone graft site, and complained the subluxation after 6 years and 5 months. So the meniscal bearing was exchanged from 12.5mm to 17.5mm. CONCLUSION: If the proper choice of prostheses and bone grafts are accompanied, the total knee arthroplasty can be used to treat the neuropathic joint concurrently with arthrodesis.