Abstract
To evaluate the clinical effectiveness of minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) in single-level lumbar degeneration disease treatment. We retrospectively analyzed the clinical data of 32 patients who underwent the MIS-TLIF surgery from Nov. 2013 to Oct. 2014 in Shanghai Tongji Hospital.Clinical and radiological outcomes including operation time, X-ray exposure, surgical blood loss, drainage blood loss, complications, visual analogue scores (VAS), Oswestry disability index (ODI) scores, average intervertebral space and fusion rate. VAS scores of low back and leg pain, ODI scores were recorded before and after surgery to evaluate the functional recovery, average intervertebral space height, lumbar and surgical Cobb angle were measured by X-rays before and after surgery to assess recovery of intervertebral space height and the change of lumbar kyphosis. The Bridwell criterion was used for evaluating the interbody fusion and the MacNab criterion was used for assessment after surgery. All the patients received successful surgery. The mean operative time was (171.9±31.1) min with (36.7±16.4) seconds radiation exposure, and mean blood loss was (153.3±64.8) ml, drainage blood loss was (58.9±49.2) ml. All cases were followed up for (11.6±3.3) months. Compared with preoperation, VAS score of low back and leg pain, ODI score and average intervertebral space showed significant improvements after surgery. There were 26 (81.3%) cases were grade I and II 3 months after surgery according to the Bridwell criteria while the number was 31 (96.9%) at the last follow-up. The clinical results were excellent in 22 cases, good in 8 cases and fair in 2 cases according to the MacNab criteria at the final follow-up. MIS-TLIF under Spotlight work channel system is a safe and effective procedure for single segment lumbar degenerative disease and it may offer patients additional advantages in less trauma and reduction of hospital stay.
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