We report greater than 10-year outcomes in duplicated thumbs following corrective cartilaginous resection during the growth period. We have undertaken corrective resection of cartilaginous joint connections based on intraoperative arthrographic findings to reconstruct favourable alignment in six Wassel Type II and IV thumb duplication in six patients. The age at surgery was 13 months (range 10–15), and the average post-surgical follow-up was 134 months (range 120–160). We observed five excellent and one good outcome using the Japanese Society for Surgery of the Hand scoring method. Favourable joint congruency and alignment were preserved, and no growth plate arrest or joint space narrowing was present more than 10 years after surgery. We conclude that corrective resection of the cartilaginous joint based on intraoperative arthrographic findings has long-term reliability for duplicated thumbs, especially those of Wassel Type II and IV, which have a cartilaginous joint connection.

Levels of evidence: IV

我们报告了生长期间矫正软骨切除术后重复拇指超过 10 年的结果。我们已经根据术中关节造影结果对软骨关节连接进行了矫正切除，以重建 6 名患者的 6 个 Wassel II 型和 IV 型重复拇指的良好对齐。手术年龄为 13 个月（范围 10-15），术后平均随访时间为 134 个月（范围 120-160）。我们使用日本手外科学会评分方法观察到 5 个优秀和 1 个良好的结果。保持良好的关节一致性和对齐，手术后 10 年以上没有出现生长板停滞或关节间隙变窄。

证据等级： IV