Body Region: Upper Arm

  • May 6, 2026
    The transverse band of the UCL runs between the medial coronoid and the medial olecranon, parallel to the joint line.…
  • May 6, 2026
    The accessory lateral collateral ligament runs from the annular ligament to the supinator crest of the ulna, providing additional lateral…
  • May 6, 2026
    The radiocapitellar ligament is a reinforcement of the anterior elbow capsule at the radiocapitellar joint, connecting the radial neck region…
  • May 6, 2026
    The orbicular zone of the elbow is a circular reinforcement of the annular ligament capsular fibres that encircle the radial…
  • May 6, 2026
    The anterior elbow capsule attaches to the anterior coronoid process at its base, providing the anterior capsular ligamentous restraint for…
  • May 6, 2026
    The posterior elbow capsule attaches to the proximal olecranon, forming the posterior restraint against elbow hyperextension and the posterior boundary…
  • May 6, 2026
    The short head of biceps has a coracoid origin, making it vulnerable to coracoid impingement and coracobrachialis-related compression. Its coracoid…
  • May 6, 2026
    The anconeus is a small triangular muscle at the lateral elbow that assists triceps in elbow extension and, importantly, abducts…
  • May 6, 2026
    The brachialis is the primary elbow flexor, acting regardless of forearm rotation position. Unlike the biceps (which is supination-dependent), brachialis…
  • May 6, 2026
    The medial head is the most deeply placed and most consistently active of the three triceps heads. Its distal radial…

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