– See: – Anterior Approach to the Shoulder – Discussion: – with plate fixation of the humerus, the anterior approach is preferred for proximal and mid-diaphyseal frx w/ application of plate to anterolateral aspect of the humerus (see humeral shaft fractures); – interval lies … Read more
– See: Anterior Approach to the Humerus Axillary Approach: Posterior Approach Posterior Approach to Humerus Surgical Approach for Proximal Humeral Fractures Positioning and Draping: supine or beach chair; small soft bolster is placed beneath the shoulder blades to protract the shoulder; head is stabilized to prevent hyperextension and subsequent brachial plexus palsy; place patient in … Read more
origin: posterior surface of lateral epicondyle of humerus; insertion: lateral side of olecranon process and posterior surface of proximal portion of ulna; action: extension and pronation of the forearm at the elbow; nerve supply: radial, C5, C6; synergist: triceps brachii The aconeus muscle flap: its anatomy and clinical application.
– Discussion: – non-neoplastic expansile lesion consisting of blood filled spaces separated by connective tissue septa containing bone or osteoid and osteoclast giant cells – etiology unknown – may be primary or secondary; – an uncommon expansile osteolytic lesion of bone consisting of a proliferation of … Read more
– Discussion: – together w/ proximal portion of the coronoid process, olecranon forms greater sigmoid notch of the ulna, a deep depression that serves as articulation w/ trochlea that serves as the articulation w/ trochlea which allows motion only in anteroposterior plane and provides … Read more
– Discussion: – proximal humerus ossifies from four centers: head, shaft, and both tubercles, which unite at age 19 to 20; – frx in adult life tend to occur along old epiphyseal lines; – depression between tubercles, bicipital groove, contains long head of biceps; – tubercles also … Read more
– See: role of knee joint in locomotion and mechanical axis – Discussion: – bones forming the knee joint are femur, tibia, & patella; – both left and right femurs converge toward knee and each tibia is nearly vertical, femur and tibia meet angle of some 5-12 deg; … Read more
Anatomy & Sites of Compression of Cubital Tunnel – Discussion: – cubital tunnel extends from medial epicondyle to olecranon; – it serves as the major contraint for the ulnar nerve as it passes behind the elbow; – w/ flexion the cubital tunnel becomes taunt, and with extension the cubital tunnel becomes lax; – aponeurotic roof … Read more
– vascular supply to the humeral head – Two Part Articular Segment Displacement: – fracture plane is through the anatomic (not surgical neck); – anatomic neck represents the old eiphyseal plate; – surgical neck represents the weakened area below the tuberosities and head approximately 2 cm distal to the … Read more
– See: – Pediatric Lateral Condyle Frx – Discussion: – frxs of lateral condyle that involve capitulum alone or extend medially to involve the lateral portion of trochlea; – see capitellum fracture – Lateral approach – typically the plate is positioned posteriorly, and can be placed if needed as far as … Read more