Articular Capsule of the Humeroulnar Joint as, Medial View

Description

Medial elbow anatomy is presented with emphasis on the articular capsule of the humeroulnar joint, spanning from the distal humerus to the proximal ulna around the trochlear notch. The fibrous membrane thickens medially where it blends with the ulnar collateral ligament complex, forming a broad periarticular reinforcement from the medial epicondyle toward the sublime tubercle on the coronoid process, with the capsule continuing posteriorly toward the olecranon. Deep to the fibrous layer, the synovium reflects along the margins of the articular cartilage and recesses into the anterior and posterior capsular pouches. Orientation is clear. This medial perspective matters because it is the anatomic basis of valgus stability and the pain generator in many overhead athletes. The anterior band of the ulnar collateral ligament and the adjacent capsuloligamentous tissue are the structures stressed in valgus extension overload and injured in UCL tears, while posterior capsular thickening and posteromedial olecranon osteophytes can contribute to impingement. Surgeons planning UCL reconstruction or medial elbow arthroscopy rely on this capsular map to anticipate where the capsule accepts ligament expansion and where synovial folds may limit access. Use this plate in upper limb anatomy teaching to connect fibrous capsule, synovium, and periarticular ligament anatomy at a single joint line, or in sports medicine and orthopaedic texts discussing valgus instability, UCL injury mechanisms, and posteromedial impingement. It also supports patient education and operative notes by clarifying medial elbow soft tissue layers in a realistic male specimen view. Anatomical accuracy verified by SciePro's Medical Advisory Board.