部分背阔肌皮瓣游离移植修复前臂背侧组织缺损并重建伸指功能

Objective To report the operative methods and clinical effects of free transfer of part of the latissinus dorsi flap for coverage of dorsal forearm composite tissue defects and reconstruction of extensor function. Methods Eleven cases of large-scale composite tissue defects of the dorsal forearm as a result of trauma were treated with partial latissimus dorsi flap The medial portion of the myoeutaneou flap containing the medial thoracodorsal nerve branch Was transferred to the defect on dorsal forearm.The thoracodorsal nerve in the flap was sutured either to the radial nerve deep branch or to the extensor comnunis muscle branch.The distal aponeurosis of the latissimus dorsi woven to the tendons of the 2nd to 4th digit extertsors.The size of the harvested flaps ranged from 21 cm×9 cm to 27 cm×13 cm. Results Postoperatively all 11 myocutaneous flaps survived.Three cases underwent trimming of the cutaneous flap or myocutaneous flap due to bulkiness.Two cases had tendon tighteing procedures due to laxity of the extensor tendon.Nine eases were followed up for 6 months to 3 years,while 2 cases were lost to follow up.The extensor strength returned grade Ⅲ in 2 cases,grade Ⅳ in 6 cases grade Ⅴ in 1 case.The limb function was mostly restored and the appearance was satisfactory.According to the upper extremity functional evaluation criteria issued by the Hand Surgery Society of Chinese Medical Association the results were rated as excellent in 2 cases,good in 5 cases,and fair in 2 cases.The overall excellent and good rate was 77.8%. Conclusion Partial transfer of the latissimus dorsi myocutaneous flap for coverage of dorearm forearm composite tissue defects and reconstruction of extensor function can not only achieve good treatment outcomes,but retain some of the latissimus dorsi function as well.

Free transfer of part of the latissimus dorsi flap coverage of dorsal forearm composite tissue defects and reconstruction of extensor function