Lever reduction using polyaxial screw and rod fixation system for the treatment of @entity179 with XXXX : technique and clinical outcome.

@entity1 @entity1643 @entity227 @entity612 @entity190 @entity51 @entity1515 @entity179 @entity158 @entity717
BACKGROUND: The management for @entity179 with @entity612 remains controversial. Reduction of lumbar spondylolisthesis has been performed via numerous techniques. Most of them need extra reduction assembly. METHODS: In this retrospective analysis, 27 @entity1 of @entity179 with @entity612 underwent reduction using polyaxial screw and rod constructs and posterolateral fusion. The average age at the time of surgery was 53        3.23  years. The outcome measures consisted of a radiographic assessment of deformity and fusion rate and a clinical assessment of perioperative improvement in @entity1643 and function. Preoperative and postoperative radiographic evaluation included the percent slip, slip angle, and the lumbar @entity1515 between L1 and the sacrum measured using the Cobb method. Before surgery and at the final follow-up, the @entity717 Index (ODI) and the @entity227 analog scale (VPAS) between 0 (no @entity158 ) and 10 ( @entity158 ) were quantified. RESULTS: The average follow-up period more than 5  years was available. The mean operative time was 90.19        14.51  min, and the mean @entity190 during surgery was 152.59        45.71  ml. The mean length of incision was 4.83        0.63  cm. The average percent slippage and the mean slip angle were, respectively, 19.8        4.49% and 9.69        3.79   before surgery, 5.09        3.40% and 6.39        3.16   after surgery, and 5.67        3.92% and 7.21        3.05   at the last follow-up. The average lumbar @entity1515 was 36.88        2.64   before surgery, 41.96        1.64   after surgery, and 40.27        1.19   at the final follow-up. No @entity51 occurred. Solid fusion was achieved for all cases. Compared with the outcome preoperation, the data improved from 6.56        1.40 to 2.48        1.16 for VPAS @entity158 scores and from 32.22        3.57 to 10.93        4.93 for the ODI at the final follow-up. CONCLUSIONS: Lever slip reduction maneuver techniques using polyaxial screw and rod fixation system was simple and practicable. The treatment outcomes showed satisfactory radiographic characteristics and clinical results. The length of the incision was relatively small with a low intraoperative @entity190 and short operation time.
