We report 3 cases of Paraplesia caused by osteoporotic vertebral compression fracture and OYL. All 3 were female patients over 70 years old with severe osteoporosis. Vertebral compression fractures occured at the thoraco-lumbal junction and OYL existed in the next intervertebral space. Radiographic evaluation showed spinal cord compression caused by posterior OYL. The patients were treated surgically with posterior decompression and fusion using a Luque rod or transpedicular screw system. We evaluated the clinical symptoms using the JOA score and Hirabayashi method. Excent for 1 patient whose postoperative JOA score could not be evaluated due to dementia, the percentage of clinical recovery of the other 2 patients was 17% and 88%. We thus concluded that intervertebral fusion should be carried out for osteoporotic patients.
