Abstract
Three cases of delayed paresis of lower extremities after compression fractures of thoraco-lumbar vertebra caused by osteoporosis were operatively treated. The unstable posterior part of the fractured vertebra protruded into the spinal canal and compressed the spinal cord in all of the patients. These patients could not walk because of muscle weakness before operation. The operative method we used was posterior decompression and fixation with instrumentation (pedicle screws and rods). Transpedicular kyphoplasty using HA-block (PENTAX Co., Japan) was further performed in order to correct the vertebral alignment and support the stability of anterior column of vertebrae. After the operation, the muscle power of the lower extremities of all three patients recovered and patients were able to walk.
