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30 Οκτ 2023 · The humerus is the longest and largest bone of the upper limb. It consists of a proximal end, a shaft and a distal end, all which contain important anatomical landmarks. The humerus articulates with the scapula proximally at the glenohumeral joint so it participates in the movements of the shoulder.
humeral ligaments (Fig. 6). These contribute, together with the subscapularis, supraspinatus, infraspinatus and teres minor muscles, to the stability of the joint. The supraspinatus, infraspinatus, teres minor and subscapu-laris tendons reinforce the superior, posterior and anterior capsule. By virtue of the blending of their tendons with the
17 Δεκ 2018 · The humerus is the largest bone of the upper extremity and defines the human brachium (arm). It articulates proximally with the glenoid via the glenohumeral (GH) joint, and distally with the...
ORIGIN – lateral epicondyle of humerus and adjacent intermuscular septum and deep fascia INSERTION – four tendons, which insert via extensor hoods into the dorsal aspect of the bases of the middle and distal phalanges of the index, middle, ring, and little fingers INNERVATION – posterior interosseous nerve (C 7, C 8)
7 Αυγ 2023 · Muscles. The humerus serves as the origin and insertion site of many upper limb muscles that divide into the following distinctions: scapulohumeral muscles, anterior compartment muscles, posterior compartment muscles.
8 Αυγ 2023 · Muscles. The primary muscle group that supports the shoulder joint is the rotator cuff muscles. The four rotator cuff muscles are the supraspinatus, infraspinatus, teres minor, and subscapularis. Together the rotator cuff muscles form a musculotendinous cuff as they insert on the proximal humerus.
This chapter describes the normal anatomy of the shoulder considering the bones, ligaments, muscles, tendons, arterial and nerve supply. The clinical relevance of these structures is also described. 2.1 Shoulder: Anatomical Structures.
