棘上筋と棘下筋の上腕骨停止部について−組織学的検討−

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We reported on new footprints of the supraspinatus and infraspinatus, which represented that humeral insertion of the supraspinatus was localized in the anteromedial portion of the highest impression of the greater tuberosity and the insertion of the infraspinatus extended to the large portion of the greater tuberosity. The purpose of this study was to investigate tendinous insertion on the greater tuberosity by microscopic examination using histological sections. 7 specimens of 4 cadavers were used in this study. 1 specimen with degenerative cuff tear was excluded. We prepared histological sections which contained humeral attachment sites and stained these with hematoxylin and eosin, Masson trichrome and Elastica van Gieson. Additionally we performed immunohisotochemical staining of Type I and III collagen. The coracohumeral ligament overlaid the tendinous portion of the supraspinatus and infraspinatus; however, the coracohumeral ligament was distinguished from the tendinous portion of the supraspinatus and infraspinatus by the immunohistochemical staining of Type I collagen. The tendinous portion of the supraspinatus consisted of an anterior thick tendinous portion and a posterior thin fibrous portion. The anterior thick tendinous portion attached to the anterior portion of the highest impressions of the greater tuberosity. The tendinous portion of the infraspinatus consisted of a superior thick tendinous portion and an inferior thin fibrous portion, both of which were attached to the remaining large portion of the greater tuberosity. This histological study supported our new anatomical findings.
日本肩関節学会の論文

棘上筋と棘下筋の上腕骨停止部について−組織学的検討−

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