Clinical Research Of Thumb Ulnar Dorsal Sensory Island Flap For Thumb Pulp Impairment Reconstruction

Objective: To investigate the reconstruction of the thumb ulnar dorsalsensory reverse island flap of thumb pulp defect of clinical efficacy.Methods: 11 patients aged 23 to 57 years, average 39.6 years old malepatient. Injury, strangulation injury in 4 cases, 5 cases of smash, electric saw 2cases of injury. Type of injury in 2Ⅰb,Ⅱa type of injury in 3 cases,Ⅱb-type injury in 6 cases. Duration of less than 1 month. Skin defect size: 1.0cm×2cm ~ 1.5 cm×4.5cm. Design in the thumb of the thumb with ulnar dorsalnerve pedicle island flap.Results: The average follow-up 6.7 months, 10 survived, 1 necrosis, andsensory recovery in the United Kingdom Medical Research Council evaluationcriteria for the discrimination of static two flap: 7 ~ 11mm, are up to S3 + orabove, score > 16, the thumb ulnar dorsal web space island flap group was nocontracture, the functional exercise, no significant difference compared withthe healthy side.Conclusion: The design of the thumb ulnar dorsal flap of skin at the radialside of the cut in refers to the superficial extensor cavity separation, set off bythe radial and ulnar side, revealed in the first dorsal interosseous musclemembrane superficial blood vessels City, according to the dorsal ulnar artery ofthumb to go southbound, adjust the flap design. Pedicle skin incision to bothsides of the separation, the pedicle width on both sides of the soft tissue inconjunction with the vascular pedicle of free, do not have to separate freethumb ulnar dorsal artery. Vascular pedicle flap pivot point near the proximalphalanx neck level, do not peel too much, so as not to damage the premises,and palm from the thumb side of the dorsal branch artery anastomosis. Ulnarcut edge flap to retain the superficial branch of radial nerve branches, the opening of the tunnel will flap transposition to the recipient, the superficialbranch of radial nerve and the recipient nerve anastomosis. For the District adirect closed.