Glenohumeral Joint
– See: Shoulder Menu: – Anatomy: – GHJ has a greater ROM than any other joint; – Bony Anatomy: – its shallow, & is more akin to a grapefruit in saucer than ball in socket. – lack of bony stability & wide ROM … Read more
– See: Shoulder Menu: – Anatomy: – GHJ has a greater ROM than any other joint; – Bony Anatomy: – its shallow, & is more akin to a grapefruit in saucer than ball in socket. – lack of bony stability & wide ROM … Read more
– Discussion: – a common benign but locally aggressive lesion of unknown etiology; – occurs chiefly in men between 20-50 yrs (after epiphyseal closure); – tumor is expansile lytic lesion that involves the epiphysis & metaphysis; – tumor may enlarge to occupy most of epiphysis & adjacent metaphysis; … Read more
Discussion – in 1882, Gaucher described idiopathic hypertrophy of spleen w/o leukemia; – results from autosomal recessive deficiency of lysosomal enzyme glucocerebrosidase (b-glucosidase), which ordinarily destoys the lipid material; – it is the most common genetic lysosomal storage disorder; – results in accumulation of of glucocerebroside in retinuloendothelia cells; – bone involvement is … Read more
– See: external rotators of the hip: Origin: the outer surface of the spine of the ischium Insertion: the posterior medial surface of the greater trochanter on the femur; Action: external rotation of the femur at the hip; Nerve Supply: sacral plexus, L5, S1, S2; (see innervation) Synergists: piriformis, obturator externus, obturator internus, quadratus femoris, … Read more
– Discussion: – bone provides and environment that significantly alters interaction between bacterial and host defenses in favor of the invader; – bone contains numerous microscopic channels, the walls of which are impermeable to such host defenses as the large molecules of immunoglobulins; – bacteria, once gaining a foothold in these … Read more
– See: Radio-isotope Scanning: – Discussion: – scanning w/ gallium citrate Ga 67 has been suggested to be more accurate than technetium scanning in detecting bone and joint infections in children; – gallium works by localizing bacteria and inflammatory proteins in PMNs; – Borman et al in 1986 reported … Read more
– See: DDH – Discussion: – indicated for residual dysplasias in adolescents and young adults; – allows both anterior and lateral rotation as well as medialization of the hip; – can expect good improvement in the center edge angle (avg correction of 31 deg); – does not … Read more
– Discussion: – used in the instability patient to visulaize the anterior/inferior glenoid rim for fractures or calcification following dislocation; – Technique: – patient is seated with the arm at the side; – cassette is placed posterior, parallel to the spine of the scapula – beam is … Read more
– Discussion: – Fibular Harvest: – Hip Preparation: Various methods have been advocated for the treatment of acascular necrosis of the hip in the young patient. From the literature an operative treatment for the symptomatic hip is the conservative method of management. Reports on core decompression, osteotomies, electrical stimulation, and bone grafting have been difficult … Read more
– Discussion: – occur primarily as opportunistic infections in immunocompromised patients; – most often due to candida; – histology: noncaseating, acid-fast-negative infections; – organism are identified with a positive fungal culture, potassium hydroxide slide preparation, or Gomori methenamine silver stain – in … Read more