– See: Bone Tumor Menu – Discussion: – an osteochondroma that results from a dysplasia of peripheral growth plate; – as its name implies, multiple hereditary exostosis is an inherited condition which produces multiple exostoses; – occurs in 1 out of 50,000 people; – … Read more
– Discussion: – are characterized by a defect in metabolism of one or more mucopolysaccharides, w/ resulting excessive accumulation of these substances in the extracellular spaces of the connective tissues; – this group of disorders is characterized by a deficiency of specific lysosomal enzymes required for degradation of glycosaminoglycans; … Read more
– Discussion: – multidirectional instability implies three-way subluxations or dislocations either anteriorly, posteriorly, or inferiorly; – these patients usually have no true Bankart lesion and incontrast patients have a capacious axillary pouch; – ref: The Effect of Variation in Definition on the Diagnosis of Multidirectional Instability of the Shoulder. – … Read more
– See: – Plating Techniques – Monteggia Fractures in Children – Discussion: – Giovanni Monteggia (1814) first described frx of proximal 1/3 of ulna in association w/ anterior dislocation of radial head; – hence dislocation of radial head w/ frx of proximal 1/3 of ulna is known as Monteggia’s deformity. – Mechanism: – proposed … Read more
– Discussion: – modified procedure includes release of adductor hallucis, transverse metatarsal ligament, and lateral capsule combined w/ excision of medial eminence and plication of the capsule medially; – this procedure was modified to retain the lateral sesamoid, which helps to prevent hallux varus (which as common w/ original Mcbride bunionectomy); – as this procedure attempts to … Read more
– See: Monteggia Fractures in Adults – Discussion: – all four types of Monteggia frx dislocation are pertinent to children, including Monteggia equivalents; – diff dx: Monteggia equivalent (w/ fracture of proximal radius rather than dislocation of the radial head); – Classification: – type I: – anterior dislocation of the radial head w/ apex anterior … Read more
– Discussion: – heterogeneous group of intrinsic dysplasias characterized by x-ray changes in the metaphysesof the short and long tubular bones (epiphyses remains normal); – defect appears to lie in proliferative & hypertrophic zones of physis; – hypercalcemia is common; – diff dx: … Read more
– Carpal Tunnel Syndrome – Combined Lesions of the Median and Ulnar Nerves: – High Median Nerve Lesions – Low Median Nerve Lesions – Median Nerve Block – Median Nerve Injuries at the Wrist – Martin Gruber Anastomosis – Anatomy: – roots: C6, C7, C8, and T1 (? C5) – brachial plexus – cords: – … Read more
– See: – Medial Tibial Plateua Fractures: – Discussion: – on medial side, plate is applied to anteromedial face of proximal metaphysis deep to pes anserinus & anterior fibers of MCL; – Incision: – incision begins over medial femoral condyle, continues anterodistally then crosses the joint line near the … Read more
– Discussion: – motivation: w/ maximal elbow flexion, high extraneural pressures occur at the medial epicondyle; – hence the medial epicondyle is a major impinging structure which forces the ulnar nerve to make a sharp turn whenever the elbow is maximally flexed; – medial … Read more