V-Y Flap Over Moberg's Flap to Cover the Thumb's Fingertip Injury: Technique and Cases

The Moberg flap has been used to achieve coverage of amputations of the thumb's fingertip. However, it has been associated with flexion contractures of the interphalangeal (IP) joint of the thumb. A modification of the surgical technique is presented, adding a distal V-Y flap to allow greater advancement, and avoiding IP joint contractures. The proposed surgical technique is presented, and a case series of patients treated with this modification is introduced. A total of 5 patients underwent this surgical technique. All the flaps healed without complications. No patient presented stiffness or flexion contracture of the thumb´s IP joint. There were no cases of neuropathic pain and the 2-point discrimination over the flap was 6.8 mm on average. In conclusion, the proposed variation to the Moberg's flap allows adequate coverage of injuries to the thumb's fingertip with a low rate of complications, adequate sensitivity of the reconstructed digit and avoiding flexion contractures of the IP joint.