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1.  Soft tissue extension increases the risk of local recurrence after curettage with adjuvants for giant-cell tumor of the long bones 
Acta Orthopaedica  2012;83(4):401-405.
Background and purpose
Risk factors for local recurrence of giant-cell tumor of bone (GCTB) have mostly been studied in heterogeneous treatment groups, including resection and intralesional treatment. The aim of the study was the identification of individual risk factors after curettage with adjuvants in GCTB.
Of 147 patients treated for primary GCTB between 1981 and 2009, 93 patients were included in this retrospective single-center study. All patients were treated with curettage and polymethylmethacrylate (PMMA) with (n = 75) or without (n = 18) phenol. Mean follow-up was 8 (2–24) years. Recurrence-free survival was assessed for treatment modalities. Age, sex, tumor location, soft tissue extension, and pathological fractures were scored for every patient and included in a Cox regression analysis.
The recurrence rate after the first procedure was 25/93. Recurrence-free survival for PMMA and phenol and for PMMA alone was similar. Eventually, local control was achieved using 1 or multiple intralesional procedures in 85 patients. Resection was required in 8 patients. A higher risk of local recurrence was found for soft tissue extension (HR = 5, 95% CI: 2–12), but not for age below 30, sex, location (distal radius vs. other), or pathological fracture.
Curettage with adjuvants is a feasible first-choice treatment option for GCTB, with good oncological outcome and joint preservation. Soft tissue extension strongly increased the risk of local recurrence, whereas age, sex, location, and pathological fractures did not.
PMCID: PMC3427632  PMID: 22880716

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