New insights into inflammation in oste...( The most common degenerative joint d...),Health
The most common degenerative joint disease, osteoarthritis (OA) is marked by the breakdown of articular cartilage, which is the type of cartilage that lines the ends of most limb bones. It can afflict any jointfingers, toes, wrists, ankles, elbows, shoulders, and the spine, as well as the weight-bearing knees and hips. As OA progresses, sufferers often experience inflammation around the affected joint. This inflammation has been attributed to bits of cartilage breaking off and aggravating the synovium, the thin, smooth membrane lining a joint. Yet, MRI detection of prominent synovitis in early OAwhen joint cartilage appears normalsuggests that other joint structures may be involved in triggering this inflammation. Recent studies of inflammation in spinal arthritis implicate the enthesis, which is the attachment site of ligament or tendon to bone as being a potential driving factor in joint inflammation.
Intrigued by the potential role of tendon or ligament attachment sites in synovitis, Professors Michael Benjamin of Cardiff University and Dennis McGonagle of the University of Leeds decided to investigate the extent to which different entheses could contribute to inflammation by forming a functional unit and destructive partnership with adjacent synovium. Featured in the November 2007 issue of Arthritis & Rheumatism (http://www.interscience.wiley.com/journal/arthritis), their findings shed light on a potential novel mechanism for synovial inflammation in degenerative arthritis. This is based on a structure that the authors have called the synovial-entheseal complex (SEC). Basically insertions have a different type of cartilage called fibrocartilage near the bone. Although this is different from articular cartilage that lines the ends of bones, the authors speculated that this type of cartilage could also derive nourishment from synovium. However, this close integration altho
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| Contact: Amy Molnar amolnar@wiley.com John Wiley & Sons, Inc. Source:Eurekalert |
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