– Discussion: – scapholunate advanced collapse (SLAC) refers to a specific pattern of osteoarthritis and subluxation which results from untreated chronic scapholunate dissociation or from chronic scaphoid non-union; – degenerative changes occur most often in areas of abnormal loading; – radial-scaphoid joint is involved initially, followed by … Read more
– Discussion: – indicated for arthritic RU Joint w/ limitation of motion; – may be useful for rheumatoid patients w/ ulnar translocation, as well as the caput ulna syndrome; – procedure involves resection of a portion of distal ulna shaft and fusion of the ulnar head to the radius; … Read more
– Clinical Manifestations: – may have fevers, rash, & iritis, which can resemble symptoms of JRA. – pulmonary dz, erythema nodosum, abdominal pain, liver enlargement, and perihilar adenopathy may also be present. – labs: elevated ACE serum level is considered to be the activity marker of the disease – … Read more
– General Considerations: – safe zones for pin insertion imply that pins will avoid major neurovascular structures; – besides avoiding neurovascular strucutures, it is important that pins be inserted in subcutaneous locations; – subcutaneous insertion avoids muscular impalment which decreases pain and increases function; … Read more
– SI Joint Frx Dislocation – SI Joint Sepsis: – ref: – The Prevalence of Sacroiliac Joint Degeneration in Asymptomatic Adults – Pyogenic arthritis of the sacro-iliac joint. Long-term follow-up. – Disorders of the sacro-iliac joint in children. … Read more
– Discussion: – main function of the tibialis posterior is to invert the subtalar joint, which helps to stabilize the transverse tarsal joint during rheumatoid hindfoot; – pathophysiology: – degenerative tears usually occur distal to the medial malleolus, in a region which coincides with relative hypovascularity and sharp turn of the tendon from a verticle to … Read more
– See: RU joint – Discussion: – involves resection of ulnar articular head, leaving shaft and styloid relationship intact; – in cases of distal radial malunion, a Bower’s hemiarthroplasty may be indicated to restore passive pronation and supination of the forearm; – this procedure should be considered before performing … Read more
– Discussion: – TKR: effects of malrotation – patellar effects: – malrotation of femoral component may lead to patellofemoral dislocation or subluxation; – slight external rotation of femoral component on femur places patellofemoral groove more laterally, enhances patellofemoral stability (external rotation moves … Read more
– See: Arthroscopy of the Arthritic Knee – Discussion: – thickness of articular cartilage cannot be assessed by visualization alone, but denuded and eburnated areas of bone can be seen; – these areas are usually spotty, and assessing their importance is difficult High tibial osteotomy in the treatment of osteoarthritis of … Read more
– Discussion: – see allograft menu and ocd menu; – indicated for larger chondral or osteochondral defects (larger than 2 cm); – donor characteristics: – donors should be less than 30 years of age, with the graft harvesting the intact knee within 24 hrs … Read more