A Study on Nerve Supply in the Human Deltoid Muscle

DOI

Bibliographic Information

Other Title
  • ヒトの三角筋の神経分布について

Search this article

Abstract

Innervation of the deltoid muscle in 88 bodies of Japanese adults with 176 side cases has been studied, then the following result are obtained. As a rule the anterior portion of deltoid muscle and the clavicular portion of pectoralis major muscle are separated each other (Type I, 97.7±1.13%), and ordinarily they can be attached each other and innervated by the different nerves respectively. Four cases in which both the muscles are adherent at the clavicular portion (Type II, 2.3±1.13%) are recorded. In 2 of these 4 cases the lateral pectoral nerve, which ordinarily should innervate the clavicular portion of pectoralis major muscle, is distributed to a part of the anterior portion of muscle bundles of the deltoid muscle (Type II-B, 1.1±0.79%). In Type II, with adhesion of both the muscles, a part of muscle bundles in the deep layer of the anterior portion of deltoid muscle is inserted to the upper edge of the inserted tendon of pectoralis major muscle as the transitional muscle bundles. On the other hand, in Type the lateral pectoral nerve is distributed at these deep layer transitional muscle bundles of the deltoid muscle, the axillary nerve at the superficial layer muscle bundles, then both the nerves are overlapped each other.

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top