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Subject Area

Orthopedic Surgery

Article Type

Original Study

Abstract

Objective To evaluate early-term results of tantalum cones for reconstruction of major bone defects in revision total knee arthroplasty. Background Increased numbers of revision knee arthroplasties are reported with challenging bone defects. The best option for management of these bone defects is still unknown. Patients and methods Early results of tantalum cones for reconstruction of such defects were evaluated. Tantalum cones were implanted in 10 revision knee replacements including seven females and three males with an average age of 60 years. According to the Anderson Orthopaedic Research Institute bone defect classification, five knees had type IIA defects (one femoral and four tibial), whereas eight had type IIB bone defects (six femoral and five tibial). Three knees had no femoral defects and one had no tibial defects. All patients were followed clinically and radiologically. Results The average follow-up period of our patients was 2.85 years. The average knee society clinical score improved from 18.9 points preoperatively to 79.1 points at the final follow-up visit. Only one patient had poor result and one had good result. The all remaining eight were excellent. At the final follow-up, all porous metaphyseal cones showed evidence of osseointegration with the host bone. There was no evidence of loosening or migration of any of these constructs at the time of final follow-up. Conclusion With short-term follow-up, tantalum cones provided an effective option for bone loss management. Long-term follow-up and comparison with alternative reconstructive techniques will be required to evaluate the true effectiveness of this management approach.

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