Lumbar Alignment and Clinical Outcome after Single Level Asymmetrical Transforaminal Lumbar Interbody Fusion for Degenerative Spondylolisthesis with Local Coronal Imbalance

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概要

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• Transforaminal lumbar interbody fusion (TLIF) is widely accepted for the treatment of lumbar arthrodesis. However, the exact characteristics of TLIF depend on the number, location, shape, or materials of the interbody implants, and the type of posterior instrument. Clinical and biomechanical characteristics of each TLIF procedure are still unclear. The present study investigated the clinical and radiological improvements after single level asymmetrical TLIF, in which a single box-shaped spacer was obliquely inserted into the intervertebral space, for lumbar degenerative spondylolisthesis in patients with or without local coronal imbalance (LCI) at the operated level. The clinical records of 60 patients who underwent single level asymmetrical TLIF augmented with the pedicle screw fixation system from January 2005 to January 2011, were retrospectively reviewed. The patients were divided into the LCI group (n = 19) and non-LCI group (n = 41), based on segmental lateral translation or disc wedging at the operated site. Clinical recovery was significantly good in both groups at 2 years after surgery, but improvement of low back pain was significantly worse in the LCI group. Radiological examination revealed that the mean lumbar scoliotic angle was significantly worse in the LCI group postoperatively. Preoperative greater scoliotic angle and coronal off balance of the lumbar spine were related to unfavorable radiological outcomes. The present study showed that single level asymmetrical TLIF is an acceptable method for achieving good clinical and radiological outcomes for patients with symptomatic degenerative spondylolisthesis, however, the clinical benefits and realignment are limited if the patient has LCI at the operated site with greater scoliotic angle or coronal off balance of the lumbar spine.

• 一般社団法人 日本脳神経外科学会の論文

著者

• Hanakita Junya

  Spinal Disorders Center Fujieda Heisei Memorial Hospital

• Takahashi Toshiyuki

  Spinal Disorders Center Fujieda Heisei Memorial Hospital

• Watanabe Mizuki

  Spinal Disorders Center Fujieda Heisei Memorial Hospital

• KAWAOKA Taigo

  Spinal Disorders Center, Fujieda Heisei Memorial Hospital

• TAKEBE Noriyoshi

  Spinal Disorders Center, Fujieda Heisei Memorial Hospital

• KITAHARA Takahiro

  Spinal Disorders Center, Fujieda Heisei Memorial Hospital

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• Lumbar Alignment and Clinical Outcome after Single Level Asymmetrical Transforaminal Lumbar Interbody Fusion for Degenerative Spondylolisthesis with Local Coronal Imbalance

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