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Neuropathology of the brainstem and spinal cord in end stage rheumatoid arthritis: implications for treatment.
  1. F C Henderson,
  2. J F Geddes,
  3. H A Crockard
  1. Department of Neurosurgery, National Naval Medical Center, Bethesda, MD 20814-5011.

    Abstract

    OBJECTIVE--To study the detailed histopathological changes in the brainstem and spinal cord in nine patients with severe end stage rheumatoid arthritis, all with clinical myelopathy and craniocervical compression. METHODS--At necropsy the sites of bony pathology were related exactly to cord segments and histological changes, and correlated with clinical and radiological findings. RESULTS--Cranial nerve and brainstem pathology was rare. In addition to the obvious craniocervical compression, there were widespread subaxial changes in the spinal cord. Pathology was localised primarily to the dorsal white matter and there was no evidence of vasculitis or ischaemic changes. CONCLUSIONS--Myelopathy in rheumatoid arthritis is probably caused by the effects of compression, stretch, and movement, not ischaemia. The additional subaxial compression may be an important component in the clinical picture, and may explain why craniocervical decompression alone may not alleviate neurological signs.

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