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Olecranon Fracture

Basics Description The olecranon: Is the proximal bony projection of the ulna at the elbow Articulates with the trochlea of the distal humerus to form the ulnohumeral portion of the elbow joint: This articulation is responsible for flexion and extension of the elbow joint. Is the insertion site of the triceps tendon Contraction of […]

Fracture Treatment

Basics Description Fractured or broken bones are a common result of trauma. Treatment of fractures may be with or without surgery and depends on the location and severity of the fracture. Nondisplaced: 1 or both cortices may be involved, but the fracture has not moved. Nondisplaced fractures may be difficult to detect. Displaced: Displacement […]

Acromioclavicular Joint Separation

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Basics Description AC joint injuries range from a mild sprain of the supporting ligaments to a complete separation of the AC joint. The AC joint is a diarthrodial joint formed by the distal clavicle and the medial facet of the acromion. Interposed in the joint is a fibrocartilaginous disc, which helps distribute the […]

Acromioclavicular Joint Arthritis

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Basics Description The AC joint can become a source of pain in the shoulder, often because of degenerative osteoarthritis, posttraumatic arthritis, or distal clavicle osteolysis. Diagnosing problems of the AC joint: Best diagnosed with pain on palpation, reproduction of pain with cross-body adduction, and diagnostic injections Plain radiographs, especially the Zanca view, or […]