(see also: Chondral Injuries: Nourishment) Discussion articular cartilage is avascular & is prevented from mounting a vascular response when there is isolated cartilage injury; absence of vessels w/ in cartilage imposes limitations on healing potential; indeed, some traumatic defects in cartilage apparently never heal; chondrocytes in articular cartilage are capable of cell division & are … Read more
Discussion » orthopaedic infection menu general orders and treatment differential diagnosis » (also consider Brucella melitensis, Borrelia burgdorferi and Treponema pallidum) Painful knee–an unusual cause secondary to pseudomonas septic arthritis of the hip. Septic until proven otherwise: approach to and treatment of the septic joint in adult patients. Indicators for detection of septic arthritis in … Read more
Discussion ARA criteria for RA pathogenesis differential diagnosis: spondyloarthropathies & related chronic seroneg arthritides; systemic lupus erythematosus; scleroderma; dermatomyositis; juvenile rheumatoid arthritis Clinical Aspects » Laboratory Aspects » Radiographic Aspects » Treatment of RA Medical Management of RA » Surgical Treatment cervical spine hand wrist elbow and shoulder: frequently there is concomitant shoulder and elbow … Read more
(see also: Spondyloarthropathies) Discussion psoriasis affects 1-2 % of U.S. population & typically presents w/ well-defined erythematous scaly plaques; only a minority of pts with psoriasis develop arthritis; when arthritis develops, it most often is an asymmetrical oligoarthritis, which at times may be quite destructive; some patients may develop spondylitis (usually will have HLA-B27 antigen); … Read more
Editor: Scott D. Boden, MD A truly global perspective on the lumbar spine with contributions from over 200 international experts. The International Society for the Study of the Lumbar Spine and Data Trace Internet Publishing, LLC are pleased to present the Lumbar Spine Online Textbook. This work is being hosted on the world renowned Wheeless’ … Read more
Discussion (see also synovial fluid) coefficient of friction for two surfaces can be thought of as degree of roughness that exists between two surfaces; where as solid friction is relatively independent of velocity of motion, fluid friction forces are sensitive to velocity & to lubricant film thickness; increase in joint velocity is not accompanied by … Read more
Discussion thromboembolism is among the most serious complications in orthopedics classic “Vichow’s” triad damage to venous endothelium venous stasis hypercoagulable states and conditions Prevalence varies depending on the sensitivity of the study and the degree of prophylaxis theoretically every surgery patient probably develops microscopic thrombi which embolize to the lungs, but these may not be … Read more
Discussion indicated for symptomatic soft tissue impingement, synovitis: specific lesions amenable to arthroscopic debridement include: osteochondral lesions; meniscoid lesion in anterolateral gutter; mass of fibrocartilagenous tissue arising from the tibio-fibular joint will protrude into the joint; patients will note anterolateral ankle pain, popping, and giving way; anterior impingement snydrome of the ankle thickening of antero-inferior … Read more
The Disaster Preparedness Toolbox is an educational conduit offering resources to help educate non-military orthopaedic surgeons worldwide in the areas of disaster preparedness and trauma care. Toolbox offerings: Journal – Special themed issues of the Journal of Surgical Orthopaedic Advances exclusively devoted to disaster preparedness and trauma care. Online Textbook – Wheeless’ Textbook of Orthopaedic Surgery contains … Read more
Discussion acute arthritis caused by CPPD crystal-induced inflammation; almost as common as gout & may perfectly mimic gout during acute flare; pseudogout attacks occurring before age 50 are uncommon; see: pseudogout occurence after joint replacement references: A histological study of calcium pyrophosphate dihydrate crystal-deposition disease. Clinical features of pseudogout attack. A survey of 50 cases. … Read more