The impact of microsurgery on the treatment of ring avulsion injuries

BACKGROUND: Treating ring avulsion injuries continues to challenge the reconstructive hand surgeon. The complex operation draws from plastic surgery and orthopedic surgery principles to provide soft-tissue coverage, skeletal fixation, tendon repair, and neurovascular reconstruction. Furthermore, the application of microsurgical techniques has enabled the revascularization and replantation of completely avulsed fingers. METHODS: A retrospective review of 22 consecutive ring avulsion injuries (seven amputations, five replantations, and 10 revascularizations) from 1987 to 2015 performed by a single senior surgeon (D.T.W.C.) was conducted. RESULTS: Of these 22 ring avulsions, 10 revascularizations, five replantations, and seven amputations (five because of clinical factors, and two because of patient request) were performed. None of the 15 replantations and revascularizations resulted in loss of the ring finger or necrosis of the revascularized tip. CONCLUSIONS: With proper patient selection, appropriate level of injury identification, and meticulous surgical execution, the restoration of form and function to the hand is feasible in ring avulsion injuries. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.

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In a single surgeon's 28-year retrospective review of 22 consecutive ring avulsion injuries treated between 1987 and 2015 (seven amputations, five replantations, 10 revascularizations), all 15 replantation and revascularization attempts succeeded, with no ring-finger loss or tip necrosis.

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