, Volume 471, Issue 6, pp 2039-2040
Date: 04 Apr 2013

Reply to Letter to the Editor: Surgical Technique: Unicondylar Osteoallograft Prosthesis Composite in Tumor Limb Salvage Surgery

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We read the letter from Nottrott et al. with great interest, and we very much appreciate their comments.

In our study [1], we highlighted that the indications for this technique were: (1) unicondylar osteoarticular defects after tumor resection with a safe margin, and (2) young active patients with a long life expectancy. Implantation of unicondylar osteoarticular allograft (UOA) was reported to have high radiographic and functional scores [6]. However, progressive degenerative changes (joint narrowing and subchondral bone collapse) in the graft compartment were seen in many patients (39%), especially in young, active ones. We used unicondylar osteoarticular prosthesis composites (UOPC) for reconstruction to try to reduce the incidence of degeneration. According to radiographic evaluation, all joint spaces were unchanged. No moderate or severe degenerative changes were observed in three patients with more than 5 years followup. We stated our study had inadequate power to evaluate UOPC r ...

(Re: Fan H, Guo Z, Wang Z, Li J, Li X. Surgical technique: unicondylar osteoallograft prosthesis composite in tumor limb salvage surgery. Clin Orthop Relat Res. 2012;470:3577–3586.)
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