頚椎黄色靭帯石灰化症の手術例の検討 [in Japanese] Clinical Study for Calcification of Ligamentum Flavum of Cervical Spine [in Japanese]
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We report the mid-term follow-up findings of 12 patients (two males and 10 females) after surgery to treat calcification in the ligamentum flavum (CLF) of the cervical spine. Their mean age was 69.8 (range from 54 to 80) years at operation. Initially, the mean anteroposterior diameter of the spinal canal at the C5 level was 12.3 (10.0-14.0) mm on lateral radiogram. There was combined CLF or other compressive lesions such as disc herniation in five patients, spondylolisthesis in another two, and combined ossification in the posterior longitudinal ligament (OPLL) in another. All patients had objective neural deficits consistent with cervical myelopathy. Each underwent expansive laminoplasty by sagittal splitting of the spinous process. Preoperative calcification was observed at the C3/4 level in six patients, at the C4/5 level in nine, C5/6 in nine, and at the C6/7 in eight. The operative results were evaluated according to the Japanese Orthopaedic Association (JOA) score, after a mean follow-up period of 31.2 (range from six to 100) months. The mean JOA score was 9.0 points before surgery, and was 13.2 points in the most recent follow-up. The overall mean recovery rate by JOA score was 53.5%.
- Orthopedics & Traumatology
Orthopedics & Traumatology 55(3), 397-399, 2006-09-25
West-Japanese Society of Orthopedics & Traumatology