Author(s): Sato T, Kokubun S, Tanaka Y, Ishii Y
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Abstract Surgeries for thoracic myelopathy for 7 years in a northeastern prefecture (population, 2.26 million) and surrounding areas were reviewed. Eighty-one residents in the prefecture were operated on. The annual operation rate per one million people was 5.1. The rate corresponded to 9\% of that reported for cervical myelopathy in the same prefecture. The mean age at operation was 55 years. Fifty-five patients (68\%) were male and 26 (32\%), female. Twenty-eight \% of the patients had preoperative periods longer than two years, and 23\% had severe disabilities. Anterior decompression was performed in 27\%, posterior decompression in the others. The postoperative recovery rate averaged 48\%. The lowest rate was 31\% in patients with a preoperative duration of more than 2 years (p < 0.05). Sixty-four \% of the patients had ossification of the ligamentum flavum; 20\%, posterior spur; 19\%, disc herniation; 16\%, ossification of the posterior longitudinal ligament; 1\%, calcification of the ligamentum flavum; 1\%, degenerative spondylolisthesis. Seventy-nine \% had one of the above spinal factors and 21\% had two.
This article was published in Tohoku J Exp Med
and referenced in Journal of Spine