Modified dynamic external fixator traction for the treatment of intra-articular fractures of the base of the middle phalanx

Objective To explore the clinical efficacy of modified dynamic external fixator traction for the treatment of intra-articular fractures of the base of the middle phalanx. Methods From March 2015 to February 2018, 22 patients with fractures of the base of the middle phalanx were treated with close reduction and self-made modified dynamic external fixator traction. Among them, 5 patients suffered from comminuted fracture of the base of the middle phalanx, and 17 patients suffered from palmar edge fractures. The joint mobility and hand grip were measured at the last follow-up. Results All the patients achieved bony union. The flexion and extension exercises were performed after operation, and the flexion and extension of interphalangeal joints were good. No nail infection, pain and joint stiffness occurred. All the patients were follow-up from 8 to 20 months with an average 11.5 months. According to the total active motion (TAM) score system, the results were rated as excellent in 16 cases, good in 5 cases and fair in 1 case. Conclusion The modified dynamic external fixator traction is reliable in the treatment of intra-articular fractures of the base of the middle phalanx. It does not destroy the blood supply and soft tissue at the fracture end. It is conducive to fracture healing. The external fixator has simple structure and does not need to fix joints. It can exercise flexion and extension function of interphalangeal joint in early stage, and is conducive to restoring hand function as soon as possible. Key words: Finger phalanges; External fixators; Intra-articular fracture