3.

This study showed that a high complication rate at the lumbosacral junction was observed when the L5 or S1 was selected as the distal fusion end in long corrective fusion. On the other hand, the lumbosacral complication rate was low when using iliac screw as the lower fusion end. Thus, we recommend spinopelvic fixation using iliac screw as the lower fusion end of long corrective fusion for the adult spinal deformity surgery, with the high rate of failure in our patients with long fusions stopped at L5 and S1.

We concluded that a considerable number of cases appeared to need craniotomy and resection of intrahematomal membrane for complete recovery in CSDH, and that T2*-weighted MR imaging could be used as a basis for selecting the operative procedure for CSDH.

4.