1) 50 cases of injuries of the thoracic and lumbar spine were reviewed and analysed radiologically.
2) These injuries at onset were clasifled into 4 types on an anatomical basis of the severity and the site of spinal damage.
3) The “functional” results were discussed according to the degree of “anatomical” deformity of the spine.
4) The results of wedge compression fractures are usually good with or without correction by the sling method if there is no severe malalignment of the spine.
5) Severe compression fracture, comminuted fracture and fracture-dislocation may be evaluated as a good result if intervertebral stability occurs or if alignment of the spine is not severely disturbed.
6) Spinal fusion is indicated for the unstable injuries with incorrigible severe malalignment of the spine.
7) Malalignment of the spine after treatment causes painin the lumbosacral region.