Data Trace Editor – Advanced Disease: – osteoclastic resorption may become so severe that no bone is seen; – there is granulation tissue w/ fibroblasts, giant cells, inflammatory cells, and macrophages, containing hemosiderin in many cases; – this is characteristic of a brown tumor of hyperparathyroidism; – due … Read more
– See: – A Band : – I Band : – Chemistry of Muscle – Discussion: – epimysium: – outermost layer is the epimysium – covers the surface of the muscle and has important roles in force transmission and insulation … Read more
– Putti Platt: – tightening, & realigning of subscapularis which partially limits external rotation; – anterior capsule is also realinged and reenforced; – subscapularis is divided 2.5 cm from its insertion; – anterior shoulder capsule is opened in same plane as tendon is divided allowing joint to … Read more
– See: Pediatric Femoral Frx Menu – Discussion: – timing: – Immediate single-leg spica cast for pediatric femoral diaphysis fractures. – contraindications: – unacceptable shortening or angulation; – open fractures; – thoracic or intra-abdominal trauma; … Read more
– Medullary bone: – decreased in quantity, & trabecula are thin & irregular; – feature that most sig helps to establish the dx is presence of layer of unmineralized bone (osteoid seam) surrounding mineralized segment; – trabeculae & cortex have less bone, & is surrounded by a layer of unmineralized bone (osteoid seam) – osteoid seams; … Read more
– Discussion: – mixture of benign stromal tissue – large vascular lacunae separated by septa in which numerous giant cells are found & & filled with clotted blood (blood-filled spaces with bland fibrous connective tissue septa) that resembles cranberry sauce; – cavernous spaces vessel lack walls & … Read more
– Discussion: – numerous multinucleated giant cells, proliferative stroma, areas of necrosis, reactive peripheral bone, & occassional mitotic figures in the stroma (but no mitotic figures in the giant cells); – stromal cells appear elongate with oval nuclei; – giant cells may resemble osteoclasts; – Histologic Differential Dx: … Read more
– Discussion: – individual fibers are affected in random fashion throughout the muscle; – muscle fibers become rounded, will vary in size; – nuclei frequently migrate centrally; – may see phagocytosis of individual cells; – unlike neuropathic disease, in myopathy, active regeneration of fibers is … Read more
Microscopic Structure of Bone Cancellous Bone Circumferential Grouth Haversian System Longitudinal Growth Development of Bone from a Cartilage Model Tubulation
See: Acetabular Frx Femoral Neck Frx Radiology of the Hip Antibiotic Prophylaxis Anterolateral Approach Anterior Approach Anteversion of Hip Arthrodesis Arthroscopy of the Hip Aspiration Avascular Necrosis of the Femoral Head Blood Supply to the femoral head and neck; Capsule Child’s Hip – Pathologic disorders CDH Coxa Vara Dislocations of the Hip Effusion Embryology: … Read more