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目的 研究背阔肌内血管、神经的分支、分布及其体表投影.方法 对10具(20侧)成人尸体背阔肌行大体解剖观察、测量.结果 背阔肌的主要供养血管是胸背动、静脉.胸背动、静脉供养背阔肌外上部的2/3,其余1/3背阔肌由肋间动、静脉供养.胸背血管、神经分支与肋间血管、神经分支间有广泛的吻合.胸背血管、神经主要分成内、外侧,内、外侧支分叉点的体表投影位于肩胛下角外、上方.胸背血管、神经内侧支与纵轴夹角50.05±5.16度,胸背血管、神经内侧支与外侧支夹角38.67±4.25度.结论 背阔肌有较恒定的血液供应.背阔肌可被胸背血管、神经内、外侧支及其延长线分成三区.Ⅰ、Ⅲ区可单独切取,Ⅱ区可根据需要部分或全部分配到Ⅰ区或Ⅲ区.
Objective To study the branch, distribution and surface projection of blood vessels and nerves in the latissimus dorsi muscle.Methods The anatomical observation and measurement of the latissimus dorsi of 10 adults (20 sides) were performed.Results The main feeding vessels of the latissimus dorsi were thoracolumbar Move, veins .Thoracic dorsal, venous support of the outer upper part of the latissimus dorsi 2/3, the remaining 1/3 latissimus dorsi muscle by the intercostal artery and vein supply .Primary and thoracic vessels, nerve branches and intercostal vessels, between nerve branches A wide range of anastomosis.The thoracodorsal vessels and nerves are mainly divided into the medial and lateral, medial and lateral branch bifurcation of the surface projection is located in the lower part of the subscapular angle, above the thoracodorsal vessels, nerve medial branch and longitudinal axis angle of 50.05 ± 5.16 degrees, Thoracodorsal vessels, medial branch and lateral branch angle 38.67 ± 4.25 degrees .ConclusionLateralis muscle more constant blood supply.Lateralis muscle can be thoracodorsal vessels, nerve, lateral branch and its extension line is divided into three areas. Ⅰ, Ⅲ area can be cut separately, Ⅱ area can be allocated to Ⅰ or Ⅲ area in whole or in part as needed.