Tenosynovial Giant Cell Tumor of the Hindfoot: Arthroscopic Treatment and Clinical Outcomes
Abstract
Introduction: Tenosynovial giant cell tumor is a benign synovial proliferation with locally aggressive behavior. Its occurrence in the hindfoot is uncommon and challenging. Objective: To evaluate the clinical outcomes and recurrence rate in patients with tenosynovial giant cell tumor of the ankle or subtalar joint treated with arthroscopic synovectomy without adjuvant radiotherapy. Materials and Methods: An observational study was conducted on seven patients treated exclusively by arthroscopy between 2014 and 2023, with a minimum follow-up of 24 months. The American Orthopaedic Foot & Ankle Society (AOFAS) score and the Visual Analog Scale (VAS) for pain were analyzed, and recurrence was monitored by magnetic resonance imaging. Results: Four diffuse and three localized forms were treated. Complete resection was achieved in all cases. The AOFAS score improved significantly from 63.43 to 94.57 (p < 0.001), and the VAS pain score decreased from 5.71 to 0.43 (p < 0.001). No complications or recurrences were observed after a mean follow-up of 57.4 months. Conclusions: In our series, arthroscopic synovectomy yielded satisfactory clinical outcomes, with no recurrences observed during follow-up. This technique may be considered an effective alternative in selected cases where complete resection of the pathological tissue is technically feasible, potentially avoiding the needfor adjuvant radiotherapy.Downloads
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