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  • Title: Charcot spinal disease after spinal cord injury.
    Author: Morita M, Miyauchi A, Okuda S, Oda T, Yamamoto T, Iwasaki M.
    Journal: J Neurosurg Spine; 2008 Nov; 9(5):419-26. PubMed ID: 18976172.
    Abstract:
    OBJECT: The authors investigated the background, risk factors, and treatment strategies for Charcot spinal disease (CSD) after spinal cord injury (SCI). METHODS: The authors retrospectively examined the clinical and radiological findings in 9 patients with a total of 10 Charcot spine lesions that occurred after SCI. The mean age of the 9 patients was 54 years, and all patients presented with complete SCIs. In all but 1 patient, symptoms did not develop until 10 years postinjury. All 10 Charcot spine lesions were located below the thoracolumbar junction. Surgical treatment was performed in 7 patients (7 lesions), and the mean duration of postoperative follow-up was 84 months. RESULTS: All patients reported audible noises when changing posture, 5 of 9 patients reported low-back pain, and 7 patients displayed increasing instability while sitting. In 8 patients, spasticity disappeared and limbs became flaccid several years after SCI. Two patients had associated bacterial infections in the Charcot spine lesions, and 1 patient complained of autonomic dysreflexic symptoms associated with trunk movements. Although postoperative complications occurred in 3 patients, all patients who underwent surgical treatment made a good recovery and were able to return to daily life in a wheelchair. On lateral radiography, the mean range of motion at the lesion site was 43 degrees , and fluid collections between the involved vertebrae were observed in 8 patients on MR images; ankylosing spinal hyperostosis was observed in 7 patients. Charcot spine lesions tended to occur at the junction between or at the end of an ankylosing spinal hyperostotic lesion. Postoperatively, solid arthrodesis was obtained within 6 months in all surgically treated lesions. CONCLUSIONS: Disappearance of spasticity in the lower extremities is thought to be an important physical sign suggestive of CSD after SCI. Sitting imbalance and the fluid volume of the Charcot spinal lesions are related to range of motion at the lesion site. In addition to a combined approach, a single posterior approach with acquisition of anterior support is an option for surgical treatment even in cases of infected CSD.
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