Abstract:
BACKGROUND:X-ray images of lumbar degenerative diseases often show not only claw osteophytes, but also pairs of osteophytes that form in a direction away from the adjacent disc. We have investigated the direction of the formation of anterior lumbar vertebral osteophytes across the lumbar vertebrae using a sufficient number of lumbar radiographs, because osteophytes images can provide essential information that will contribute to the understanding of the pathology and progress of lumbar spine degeneration. METHODS:The direction of the formation of 14,250 pairs of anterior lumbar vertebral osteophytes across the adjacent intervertebral discs in 2,850 patients who were all over 60 years old was investigated. Anterior lumbar vertebral osteophytes were distributed into six groups based on the direction of extension of each pair of osteophytes across the intervertebral disc space. RESULTS:In L1-L2 and L2-L3, the number of patients classified into groups B (the pair of osteophytes extended in the direction of the adjacent disc) and C (almost complete bone bridge formation by a pair of osteophytes across the intervertebral disc space) was larger than that classified into group D (the pair of osteophytes extended in a direction away from the adjacent disc). In L3-L4, L4-L5 and L5-S1, the number of patients in group D was greater than that of patients belonging to groups B and C. CONCLUSION:Our study showed that pairs of osteophytes frequently formed in the direction of the adjacent disc in the upper lumbar vertebrae (L1-L2 and L2-L3) and in the direction away from the adjacent disc in middle or lower lumbar vertebrae (L3-L4, L4-L5, and L5-S1).
journal_name
BMC Musculoskelet Disordjournal_title
BMC musculoskeletal disordersauthors
Kasai Y,Kawakita E,Sakakibara T,Akeda K,Uchida Adoi
10.1186/1471-2474-10-4subject
Has Abstractpub_date
2009-01-13 00:00:00pages
4issn
1471-2474pii
1471-2474-10-4journal_volume
10pub_type
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