gms | German Medical Science

Objectives/Interrogation: Thumb polydactyly is the most common disorder of congenital deficiencies in the hand, and there are many reports. After initial surgery, it causes cosmetic or functional disorders such as deformation, scar contracture, conflict movement disorder, joint disturbance. Those requiring these revision surgeries We investigated 516 cases of poliomyeliasis experienced in the past 30 years and examined the initial surgery and secondary modification with respect to type classification and surgical procedure.

Methods: From 1985 to 2015, there were 516 cases of thumb polydactyly surgery performed at Tohoku University Department of Plastic Surgery and Sendai Medical Center Surgery surgery. Among 516 cases, 341 cases and 366 fingers were observable for 5 years or more. Among those who underwent secondary revision surgery, 81 cases and 84 fingers were found.

Results and Conclusions: The postoperative results were evaluated according to the function evaluation table of the Japanese Surgical Society and their average scores were 18.1 for Wassel type1, 16.4 for type 2, 14.9 for type 3, 17.2 for type 4,16.3 for Type 5 and 16.1 for type 6. In addition, the evaluation scores increased in all cases where the second modification was made. Surgery of thumb polydactyly is a good result. On the other hand, many cases require secondary modification. In the distal phalanx type, scar contracture revision and joint plasty are often used, and in the case of the proximal phalanx, in addition to them, there are many requiring osteotomy and replacement of abductor pollicis brevis muscles, MP joint formation. Metacarpal bone type had scar revision, surplus bone resection and so on. There were 81 cases of secondary modification, but the necessary surgical method was found out by type. It is necessary to feed back this by secondary revision surgery and verify initial surgery.