21 Humerus Fractures
• Supported by musculotendinous rotator cuff, composed of subscapularis, supraspinatus, infraspinatus, and teres minor fibers and tendons
• Distal humerus can be viewed as having diverging medial and lateral columns, with functionally independent joints.
• Upper arm
• Subclavian artery provides numerous branches, forming anastomoses around scapula, glenohumeral joint, and proximal humerus.
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