Tuch B A, Lipp E B, Larsen I J, Gordon L H
Clin Orthop Relat Res. 1977 Jun(125):159-67.
Type II polydactyly is relatively easy to treat by simple ablation. Central wedge resection is an alternative treatment, providing sufficient bone and soft tissue are excised. Duplication at the MP joint may be difficult to treat because of the frequently associated problems of joint deviation and limited motion, which may produce unacceptable results. MP joint deviation in the ulnar direction of less than 30 degrees does not require treatment. Treatment may be necessary for ulnar deviation greater than 50 degrees. Metacarpal osteotomy, arthrodesis, and central wedge resection are methods of treatment. Collateral ligament reconstruction and tendon transfer were unsuccessful in one patient. IP joint deviation of greater than 15 degrees may need treatment. If there is less than 10 degrees of motion associated with it, arthrodesis is indicated when the joint is skeletally mature. When opposition is impaired thenar muscle tendon transfer is an effective treatment.
II型多指畸形通过简单切除相对容易治疗。中央楔形切除术是一种替代治疗方法，前提是切除足够的骨骼和软组织。掌指关节处的多指畸形可能难以治疗，因为常伴有关节偏斜和活动受限问题，这可能导致不理想的结果。尺侧方向小于30度的掌指关节偏斜无需治疗。尺侧偏斜大于50度可能需要治疗。掌骨截骨术、关节融合术和中央楔形切除术是治疗方法。一名患者进行侧副韧带重建和肌腱转移未成功。指间关节偏斜大于15度可能需要治疗。如果与之相关的活动度小于10度，当关节骨骼成熟时，应进行关节融合术。当对掌功能受损时，拇短展肌肌腱转移是一种有效的治疗方法。
