Application of short-tail multiaxial and long-tail uniaxial pedicle screw spinal system for treatment of lumbar isthmic spondylolisthesis
PAN Yulin
JIAO Yunlong
ZHANG Hua
GUO Xiaowei
LI Baotian
ZHANG Meng
Abstract：Objective To discuss the clinical effects of operative treatment of lumbar isthmic spondylolisthesis (LIS) with short-tail multiaxial and long-tail uniaxial pedicle screw system combined with intervertebral bone grafting. Methods Clinical data of 74 LIS patients were collected, who were treated in Zhengzhou Orthopedic Hospital by posterior decompressive laminectomy, short-tail multiaxial and long-tail uniaxial pedicle screw fixation combined with intervertebral bone grafting from June 2010 to January 2012. Lumbar CT scanning + 2D reconstruction were performed at 3, 6 months postoperatively to evaluate intervertebral height, the effects of spondylolisthesis reduction as well as fusion; Beaujon functional score (BFS)was recorded at 6 months after the surgery. Results The operation time was 90-135 min with the average of 112 min, the estimate blood loss was 300-750 ML with the average of 420 mL. Equina, nerve root injury had not happened during the operation, while cerebrospinal fluid leakage occurred in 1 case due to dural laceration. All patients were followed up from 6 to 12 months (average 8.1 months). At 3, 6 months postoperatively, spondylolisthesis reduction rate and bone graft fusion rate was (93 ± 5)%, (91 ± 4)% and 81%, 100%respectively. BFS improvement rate was (79 ± 4)%. There were excellent in 51 cases, good in 16 cases, fair in 6 cases and poor in 1 case, with the excellent and good rate was 91% (67/74). No obvious loss of spondylolisthesis reduction improvement and intervertebral height were found during the follow-up. Conclusion For patients with LIS, short-tail multiaxial and long-tail uniaxial pedicle screw spinal system combined with intervertebral bone grafting could provide high fusion rate, less complication and satisfactory spondylolisthesis reduction.
Keywords：Lumbar spondylolisthesisBone screwsMultiaxialInternal fixatorsSpinal fusion
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 27-31 )