J. BORAK, M.D.
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The spine is a weight bearing structure and an instrument of motion. It resembles in this respect the joints of the lower extremities which likewise serve to bear weight and to carry out certain motions. There is, however, an important difference between the two. In the joints of the lower extremities the weight bearing surfaces are also the gliding surfaces for motion. In the spine the structures concerned with weight bearing are the intervertebral discs and the vertebral bodies while the motions are carried out in joints serving this purpose only. This necessitates a separate discussion of the disorders of
BORAK J. SPONDYLOSIS AND SPONDYLARTHRITIS1. Ann Intern Med. 1947;26:427–439. doi: 10.7326/0003-4819-26-3-427
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Published: Ann Intern Med. 1947;26(3):427-439.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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