Diagnosis and treatment of thumb polydactyly with symphalangism in children / 中国修复重建外科杂志

ABSTRACT

Objective: To investigate the diagnosis and treatment of thumb polydactyly with symphalangism in children. Methods: Seven cases of thumb polydactyly with symphalangism were treated between January 2013 and May 2017. There were 5 males and 2 females, aged from 10 months to 11 years, with an average age of 3.1 years. The children were diagnosed with MRI and it was seen that the base of radial multi-finger and the proximal phalangeal joint were connected by cartilage. All patients were treated with resection, lateral collateral ligament reconstruction, bone osteotomy and internal fixation. Results: The operation was successfully completed, and there was no early complications such as infection and flap necrosis. All patients were followed up 6-23 months (mean, 14.1 months). At last follow-up, there was no deformity finger, scar contracture, and other complications. The extension of the interphalangeal joint was no limited, and the range of flexion of the interphalangeal joint was 20-75°(mean, 56.7°). The appearance and function of the thumb was rated as excellent in 3 cases and good in 4 cases by Japanese Society for Surgery of the Hand Scoring (JSSH), with the excellent and good rate of 100%. Conclusion: The thumb polydactyly with symphalangism in children can be combined with clinical manifestations, X-ray film, and MRI examination to diagnose, and can obtain satisfactory results through the reconstruction of lateral collateral ligament, bone osteotomy and internal fixation.