Purpose: There are few studies on the clinical outcomes of osteochondral autologous transplantation (OAT) harvesting from local talar non-weight-bearing articular facets for the treatment of osteochondral lesions of the talus (OLTs). The purpose of this study was to review the short- to midterm outcomes of our patients who were treated with OAT harvesting from ipsilateral talar articular facets for OLTs.
Methods: Between December 2010 and November 2018, 24 patients were enrolled in this study. There were 16 males and eight females with an average age of 39.1 years and a follow-up period of 50.9 months. The clinical results were evaluated according to the American Orthopedic Foot & Ankle Society (AOFAS) ankle-hindfoot score and the visual analogue scale (VAS) score. Pre-operative plain radiographs and magnetic resonance imaging (MRI) scans, post-operative radiographs, and X-ray and computed tomography (CT) scans at the last follow-up were observed.
Results: There was a significant improvement in the AOFAS score from 61.3 ± 19.0 pre-operatively to 84.9 ± 9.2 post-operatively (P < 0.001). The VAS score improved from 6.1 ± 2.3 to 2.0 ± 1.4 at the last follow-up (P < 0.001). Twenty-one patients (87.5%) were satisfied with their clinical results. By the last follow-up CT scan, there was bone cyst formation at the donor sites in three patients, at the recipient sites in five patients and at both sites in five patients. Two patients (8.3%) underwent re-operation with arthroscopic debridement because of medial gutter hypertrophic soft tissue impingement.
Conclusion: OAT harvesting from the ipsilateral talar articular facet showed satisfactory results. The mean post-operative VAS score and AOFAS ankle-hindfoot score improved significantly. Post-operative impingement around the osteotomy site was the main complication and reason for re-operation after the index procedure. In addition, bone cysts at the recipient and/or donor site(s) were found with a large percentage under CT. Therefore, longer follow-up is necessary to determine the long-term clinical results for this technique.
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