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18 Μαρ 2024 · Definition. Bony eminence on the lateral aspect of the distal end of the humerus. Function. Attachment point for the radial collateral ligament and extensor carpi radialis brevis, extensor digitorum, extensor digiti minimi, extensor carpi ulnaris, supinator and anconeus muscle.
- Humerus
The lateral border of the humerus ends at the lateral...
- Humerus
30 Οκτ 2023 · The lateral border of the humerus ends at the lateral epicondyle. There is an impression on the lateral and anterior surfaces where the seven muscles of the superficial group of the posterior compartment of the forearm originate. These include the: brachioradialis; extensor carpi radialis longus; extensor carpi radialis brevis; extensor digitorium
The lateral epicondyle of the humerus is a large, tuberculated eminence, curved a little forward, and giving attachment to the radial collateral ligament of the elbow joint, and to a tendon common to the origin of the supinator and some of the extensor muscles.
11 Αυγ 2021 · The medial and lateral borders of the distal humerus form the medial and lateral supracondylar ridges. Among the two ridges, the lateral supracondylar ridge is relatively roughened, providing the common origin site of the forearm extensor muscles.
3 Νοε 2023 · All parts converge and insert together to the intertubercular sulcus of humerus. The muscle is innervated by the thoracodorsal nerve. Its functions are the adduction, internal rotation and extension of the arm, while it also assists in the respiration.
Function. The humerus serves as an attachment to 13 muscles which contribute to the movements of the hand and elbow, and therefore the function of the upper limb. The humerus, as the longest bone in the upper extremity, serves several crucial functions within the musculoskeletal system.
7 Αυγ 2023 · This joint allows movement along multiple planes, including internal and external rotation, abduction and adduction, flexion and extension, and is principally determined by activation of the rotator cuff muscles (teres minor, subscapularis, supraspinatus, infraspinatus) pectoralis major and deltoid.
