Repairing the defected volar finger with the free micro-flap based on the superficial palmar branch of radial artery

Abstract

Objective To discuss the clinical application of free micro-flap based on the superficial palmar branch of radial artery (SPBRA) to repair the palmar soft tissue defect of the finger. Methods From October, 2012 to September, 2015, this flap was used in 25 patients to repair the palmar soft tissue defect of the finger. The artery, the vein and the never in the flaps was anastomosed respectively with that in the recipient site. The donor area was sutured directly. Results All patients were followed-up for a mean of 11 months (range, 6-20 months). All 25 flaps survived. The character of flap was good, the appearance and sensitive function obtained satisfactory resume. At the last follow-up, the two-point discrimination was 5-10mm on the affected side. According to the Standard of Evaluation of Thumb-Finger Reconstruction of the Chinese Medical Association, there were excellent in 17 cases, and good in 8 cases. The wounds of donor site healed by 1st intention with no visible scars. The function of thumb was not damaged. Conclusion The free micro-flap based on the SPBRA is feasible for soft-tissue defects of finger bacause the undamaged major blood vessels of donor site, the inconspicuous scar, and the good appearance and sensitive function of repaired fingers. Key words: Radial artery, superficial dorsal branch; Finger, palm; Thenar eminence; Repair; Microsurgical technique