Delayed vertebral collapse with neurological deficits secondary to osteoporosis.

Delayed vertebral collapse after osteoporotic spinal fractures may cause progressive kyphosis, neurological deficits, and chronic back pain. We treated 14 consecutive patients with posterolateral decompression and posterior reconstruction and followed them over a period ranging from 24 to 54 months. The mean age was 67 (range: 62-72) years and the fracture level was T12 and L1. Seven patients were graded as Frankel stage C and seven as stage D. The mean segmental kyphotic angle was 22.6 degrees (7-29 degrees ) preoperatively, 4.4 degrees (1-6 degrees ) postoperatively, and 6.8 degrees (2-15 degrees ) at the final follow-up. The pain score on a visual analogue scale improved from 9.5 preoperatively to 2.7 postoperatively, and the neurological status improved in all patients. Bone fusion was present 9 months after operation. Of four surgical complications, two were dural tears, one a superficial infection, and there was one death due to an acute adrenal insufficiency. Posterolateral decompression with posterior reconstruction is a useful treatment for patients with delayed osteoporotic vertebral collapse.