i68 



SURGICAL APPLIED ANATOMY. [Chap. xi. 



These relations of the clavicle are given to show 

 the dangers in the way of partial or complete 

 resections of the bone. The difficulties and risks 

 of the operation increase as one progresses from the 



Fig. 17. Horizontal Section of the Body just below the Upper Border 

 of the Manubrium (Brat'Jie). 



a, Manubrium ; b, head of humerus ; c, clavicle ; d, first rib : e, second rib ; /, third 

 dorsal vertebra; g, spine of second dorsal; h. pectoralis major; i, deltoid; 

 j, inf raspinatus ; k, subscapnlaris : I, coraco-braehialis and biceps: m, pec- 

 toralis minor ; n, serratus magnus ; o, intercostals ; p, semispinalis and 

 multifidus spina3 ; q, biventer cervicis and complexus; r, longissimus dorsi ; 

 s, splenius colli ; t, rhomboideus ; u, trapezius ; v. sterno-thyroid ; w, sterno- 

 hyoid ; T, thymus ; L, lung ; 1, left innominate vein ; 2, left carotid artery ; 

 8, left subclavian artery : 4, vertebral artery ; 5, left stibelavian vein ; 

 6, cephalic vein ; 7, phrenic nerve ; 8, vagus ; 9, transverse scapular artery. 



acromial to the sternal end. Resection of the acromial 

 third of the bone is comparatively easy, but resection 

 of the sternal portion is most difficult and dangerous. 

 The entire clavicle has been removed with success, 

 and the operation has been followed by less impair- 

 ment of the arm movements than would be imagined. 

 The clavicle forms the sole direct bony connection 

 between the upper limb and the trunk, and in severe 



