PURPOSE To assess how the level of the deformity, the stage of the osteoarthritic process, and the role of additional surgeries impact radiographic and clinical outcomes following an extra-articular medial closing supramalleolar osteotomy for treatment of post-traumatic valgus ankle osteoarthritis. METHODS About 56 consecutive patients who underwent an extra-articular medial closing wedge osteotomy for post-traumatic valgus ankle osteoarthritis were retrospectively analyzed. Subgroups were formed according to the pre-operative level of deformity and preoperative stage of ankle osteoarthritis. Additional surgical steps required to achieve a properly balanced hindfoot were also noted. Radiographic and clinical outcomes of each subgroup were compared with each other, and the role of additional surgical steps required to achieve a balanced hindfoot was investigated. RESULTS Radiographic and clinical outcomes improved significantly between pre-operative assessment and the last follow-up. Patients with a pre-operative supramalleolar deformity showed superior radiographic outcomes compared to patients with an intra-articular deformity. Clinical outcomes did not differ significantly between these two subgroups. The pre-operative stage of ankle osteoarthritis significantly impacted radiographic outcomes but did not influence clinical outcome measures. An additional fibula or calcaneus osteotomy was necessary for 55% and 23% of all patients, respectively. CONCLUSION Extra-articular medial closing supramalleolar osteotomies show satisfactory mid- to long-term radiographic and clinical outcomes in patients with post-traumatic valgus ankle osteoarthritis.

中文翻译：

---

创伤后外翻足踝骨关节炎的超小切口截骨术。

目的评估关节外内侧闭合上睑下截骨术治疗创伤后外翻性踝关节骨关节炎后的畸形水平，骨关节炎过程的阶段以及其他手术的作用如何影响放射照相和临床结果。方法回顾性分析了连续56例因创伤后外翻性踝踝骨关节炎而进行的关节外内侧闭合楔形截骨术的患者。根据踝关节骨关节炎的术前畸形程度和术前阶段将其分为亚组。还指出了实现适当平衡的后足所需的其他手术步骤。比较每个亚组的影像学和临床结局，并研究了实现平衡后足所需的其他手术步骤的作用。结果在术前评估和最后一次随访之间，影像学和临床结果显着改善。与关节内畸形患者相比，术前超小畸形患者表现出更好的放射学结果。这两个亚组之间的临床结局无显着差异。踝关节骨关节炎的术前阶段显着影响了影像学结果，但不影响临床结果指标。55％和23％的患者分别需要进行腓骨或跟骨截骨术。