Essays on practical medicine and surgery (Volume 2) . angle. It thusdivides the axillary region into two trian-gular spaces, through which the principalvessels and nerves pursue their course. The first of these spaces, denominatedby Velpeau, costo-clavicular, is situatedabove the muscle, and is bounded, supe-riorly, by the clavicle and the subclaviusmuscle; internally, by the surface of theribs, covered by the serratus magnus; in-feriorly and externally, by the upper mar- gin of the pectoralis minor. The axillaryartery and vein traverse it obliquely, co-vered by a considerable quantity of cell
Essays on practical medicine and surgery (Volume 2) . angle. It thusdivides the axillary region into two trian-gular spaces, through which the principalvessels and nerves pursue their course. The first of these spaces, denominatedby Velpeau, costo-clavicular, is situatedabove the muscle, and is bounded, supe-riorly, by the clavicle and the subclaviusmuscle; internally, by the surface of theribs, covered by the serratus magnus; in-feriorly and externally, by the upper mar- gin of the pectoralis minor. The axillaryartery and vein traverse it obliquely, co-vered by a considerable quantity of cellu-lar tissue,—by the deep-seated layer offascia presently to be described, togetherwith the aponeurotic expansion calledcosto-coracoid ligament (Fig. 1. b.); andover these parts, the pectoralis major. Itis also in this space that the cephalicunites with the axillary vein ( r,d.); and towards its lower part, the supe-rior thoracic artery generally takes itsorigin. (Fig. 1. /) At this point, theaxillary artery (Fig. 1. e.) can be most Fig. A, Clavicle B, Deltoid, o, Coracoid process, fc, Pectoralis minor> detached from the coracoid process and reflected, c, Axillary ar-tery, d, Thoracic artery, e, Axillary vein. /, Cephalic vein, g, Axillary plexus of nerves. A, Median nerve, i, Long thoracic artery. easily reached, when it becomes neces-sary to secure it beneath the clavicle. The lower triangular space, which maybe called pectoro-humeral, is boundedabove by the lower margin of the pecto-ralis minor; outwardly by the humerus;and inferiorly by the axillary border ofthe pectoralis major. It is occupied bythe mass of loose cellular tissue alreadymentioned, by numerous lymphatic glands,and by the axillary vessels and nerves,which traverse its upper part, in the vi-cinity of the shoulder joint. The arterymay be secured in this region; but as itis more intimately surrounded by theplexus of nerves, it cannot be so easilyisolated as above. This space, however,is far more l
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Keywords: ., boo, bookcentury1800, bookdecade1840, booksubjectclinicalmedicine
