Introduction Diarthrodial saddle joint incongruous (~50% contact) fibrocartilage (not synovial cartilage) contains an intra-articular disc Motion elevation of arm to 90° leads to rotation of the sternoclavicular joint of 30° Imaging best assessed radiographically by Serendipity view involves 40° cephalic tilt view of sternum and clavicle CT scan is most sensitive and specific Stabilizing Ligaments of Sternoclavicular Joint Posterior sternoclavicular capsular ligament primary restraint for anterior-posterior stability Anterior sternoclavicular ligament primary restraint to superior displacement of medial clavicle Costoclavicular (rhomboid) ligament anterior fasciculus resists superior rotation and lateral displacement posterior fasciculus resists inferior rotation and medial displacement Intra-articular disk ligament prevents medial displacement of clavicle secondary restraint to superior clavicle displacement Medial Clavicle Anatomy Clavicle is the first bone to begin the ossification process ossifies between 5th and 6th weeks of gestation Clavicle is the last bone to complete the ossification process medial epiphysis of clavicle is last physis to close at 20-25 yrs Important to distinguish SC dislocations from physeal fractures most injuries at this location involve the medial clavicular physis before age of 25
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All Videos (4) Podcasts (1) Login to View Community Videos Login to View Community Videos 2017 Orthopaedic Summit Evolving Techniques Complex Case Presentations with Questions and Answers: AC and SC Joint Eric McCarty Shoulder & Elbow - Sternoclavicular Joint B 5/11/2018 387 views 4.5 (6) Login to View Community Videos Login to View Community Videos 2017 Orthopaedic Summit Evolving Techniques Pro: I Think You Have All Gone to the Wrong Medical School: Non-Op! Hear the Facts! - J. Martin Leland III, MD Shoulder & Elbow - Sternoclavicular Joint B 5/11/2018 214 views 5.0 (2) Login to View Community Videos Login to View Community Videos 2017 Orthopaedic Summit Evolving Techniques Pro: Complications of SC Joint Reconstructions - Larry D. Field, MD Larry Field Shoulder & Elbow - Sternoclavicular Joint C 5/11/2018 158 views 5.0 (1) Shoulder & Elbow | Sternoclavicular Joint Shoulder & Elbow - Sternoclavicular Joint Listen Now 3:55 min 5/18/2021 33 plays 0.0 (0) See More See Less