With the exhibit of pseudotumor discoveries around hip replacements, the search for the cause of such abnormal masses has become a topic of great interest. Possible areas of causation include metal-on-metal hip replacements compared to metal-on-polyethylene hip replacements, patient hypersensitivity to prosthesis debris, or even prosthesis surgical position has been investigated. Although more ...

BACKGROUND/AIMS Rearrangement of immunoglobulin gene segments, leading to B cells with functional receptors, is thought to be largely restricted to developing immature B cells in bone marrow. However, accumulating evidence suggests that mature B cells occasionally modify their antigen specificity by VH segment replacements during the germinal centre reaction to enhance antigen affinity, or to o...

OBJECTIVES To obtain further information the incidence of injuries and playing positions affected in club rugby in Scotland. METHODS Routine reports of injury (permanent) and blood (temporary) replacements occurring in competitive club rugby matches by referees to the Scottish Rugby Union during seasons 1990-1991 to 1996-1997 were analysed. RESULTS A total of 3,513 injuries (87 per 100 sche...

PURPOSE The aim of this study was to investigate missing teeth and prosthodontic replacements in an institutionalized elderly population in China, and to assess dental functionality before and after the prosthodontic replacements based on a hierarchical dental functional classification (HDFC) system. MATERIALS AND METHODS A sample of 512 participants (9% aged 60-69 years; 29% aged 70-79 years...