[Application of wrap-around great toe flap combined with medial plantar artery perforator flap for completely degloved fingers].

Objective: To investigate the effectiveness of the wrap-around great toe flap combined with medial plantar artery perforator flap (MPAP) for repairing the completely degloved fingers.

Methods: Between February 2018 and December 2019, 12 patients with the completely degloved fingers caused by machine strangulation were admitted. There were 9 males and 3 females with a median age of 32 years (range, 18-42 years). The injured finger was index finger in 7 cases, middle finger in 3 cases, and ring finger in 2 cases. The skin was avulsed from the metacarpophalangeal joint level, with the intact tendon and joint. The interval between injury and admission was 1-8 hours (mean, 5 hours). All fingers were taken debridement during the emergency operation. The size of the skin defect ranged from 8.0 cm×5.0 cm to 12.0 cm×7.5 cm. After flap thinning, the wrap-around great toe flap (8.0 m×2.0 cm-12.0 cm×3.5 cm) and MPAP (8.0 cm×4.0 cm-12.0 cm×5.5 cm) were used to repair the degloved finger. The donor sites were repaired with the full-thickness skin graft or the flap.

Results: All flaps and skin grafts survived completely without significant complications and the wounds at recipient and donor sites healed by first intention. All patients were followed up 12-16 months (mean, 14 months). The texture, appearance, and color of the affected fingers were close to those of normal fingers, and the nails grew normally. At last follow-up, the mean two-point discrimination of the flap was 9 mm (range, 8-10 mm), and the sensation of the injured finger recovered to S-S. And 10 cases were rated as excellent and 2 cases as good according to the Michigan Hand Outcomes Questionnaire (MHQ). There was no complication such as pain from walking or skin ulceration at the donor site. The American Orthopaedic Foot and Ankle Society (AOFAS) score was excellent in 9 cases and good in 3 cases.

Conclusion: Treating for the completely degloved fingers, the wrap-around great toe flap combined with MPAP can obtain good effectiveness in the respect of the sensation, function, and appearance.