purpose. To reviewed 416 patients who underwent discectomy for primary or recurrent prolapse of lumbar intervertebral discs (PLID). Methods. Records of 296 men and 102 women aged 19 to 60 (mean, 39) years who underwent discectomy for a primary PLID, and 14 men and 4 women aged 28 to 50 (mean, 40) years who underwent revision discectomy for a recurrent ipsilateral (n=14) or contralateral (n=4) PLID at L4-5 (n=14), L5-S1 (n=3), or L3-4 (n=1) were reviewed. The pain-free interval, side and degree of herniation, operating time, length of hospital stay, and pre-and post-operative visual analogue score (VAS) for pain were recorded. Clinical outcomes were evaluated using the modified Macnab criteria and the Oswestry Disability Index. results. Patients were followed up for one to 4 years. The mean operating time was significantly longer in revision discectomy (65 vs. 141 minutes, p<0.001, unpaired t-test).
purpose. To compare early outcome of transforaminal lumbar interbody fusion (TLIF) for lytic versus degenerative spondylolisthesis. Methods. 14 women and 8 men aged 20 to 60 (mean, 36) years underwent TLIF for lytic (n=15) or degenerative (n=7) spondylolisthesis. Of the 15 patients with lytic spondylolisthesis, 9 involved L4/ L5 and 6 L5/S1. Of the 7 patients with degenerative spondylolisthesis, 3 involved L4/L5, 2 L5/S1, one L2/L3, and one L3/L4. The spondylolistheses were classified as grade II (n=15), grade III (n=4), and retrolisthesis (n=3). 11 patients with lytic and 2 with degenerative spondylolisthesis had sensory deficits (n=12), motor deficits (n=9), and diminished reflexes (n=7). Visual analogue score (VAS) for pain and the Oswestry Disability Index (ODI) of each patient were assessed at months 3, 6, and 12, and 6 monthly thereafter. Fusion status was assessed by radiologists.
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