Clinical finding, diagnostic key points, factors influencing the prognosis of O. P. L. L. were discussed.
For the treatment of O. P. L. L. of the thoracic spine, Laminectomy had been performed upon 6 patients (4 female, 2 male).
The result was good in 3 cases and not much improved in other cases.
In laminectomy, we would emphasize next two points. One is wide and extensive laminectomy, and another is keeping the thoracic spine at extension position during and after the operation to relieve the compression of the spinal cord.
