Abstract:Objective This study aimed to discuss the clinical curative effect and feasibility of the combination of bundling bone fragment with 8-figure binding and elastic fixation in the treatment of bony mallet finger. Methods Retrospective analysis was performed on 10 patients (10 digits) with bony mallet fingers who underwent surgery in the Department of Hand and Foot Microsurgery of Nanjing Jiangbei Hospital from May 2021 to July 2022, including four males and six females, aged 22-56 years old. Based on the Wehbe and Schneider classification, there were two cases of type Ia, three cases of type Ib, two cases of type Ⅱa, and three cases of type Ⅱb. During the procedure, the avulsion fracture of the base of the distal phalanx in the bony mallet finger was due to the combination of bundling bone fragment with 8-figure binding and Kirschner wire elastic fixation. After 8 weeks, the Kirschner wire was removed and flexion and extension of the affected finger were gradually increased;the range of motion (ROM) and the total active range of motion (TAM) of the finger were recorded, and the healthy side of the ROM and TAM slightly differed. Finger function was evaluated in accordance with the TAM system of the American Association of Hand Surgeons. Results All incisions healed well, and no nail infection and broken nail phenomenon were observed. In addition, mallet finger deformities were all corrected postoperatively. All 10 cases were followed up, and the follow-up period was 6 to 7.5 months. At the last follow-up, the mean active ROM of the distal interphalangeal joint was 28.8°-36.2°[30.2°(30.1°,33.2°)], and the mean TAM of the injured finger was 223.8°-236.3°[225.5°(225.1°,232.4°)].There was no significant difference in ROM and TAM between the injured finger and the healthy finger (Z=-4.66, -1.32; all P values>0.05). Based on the TAM system assessment criteria, seven cases were excellent; three cases were good. Conclusion A satisfactory therapeutic outcome for the treatment of bony mallet finger deformity can be achieved by the combination of bundling bone fragment with 8-figure binding and elastic fixation because of their simple operation and small incision. Thus, this method is considered effective and practical.
江起庭, 李智, 邱福平, 何兵, 王斌, 余红, 李涛. 8字捆绑联合弹性固定治疗骨性锤状指[J]. 中华解剖与临床杂志, 2023, 28(10): 652-656.
Jiang Qiting, Li Zhi, Qiu Fuping, He Bing, Wang Bin, Yu Hong, Li Tao. Combination of bundling bone fragment with 8-figure binding and elastic fixation in the treatment of bony mallet finger. Chinese Journal of Anatomy and Clinics, 2023, 28(10): 652-656.
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