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Postoperative Low Back Pain after Posterior Lumbar Interbody Fusion Surgery Using Cortical Bone Trajectory Screws

Asian Spine Journal 2020년 14권 5호 p.655 ~ 662
Nakajima Nozumu, Maenaka Takahiro, Kano Hiroki,
소속 상세정보
 ( Nakajima Nozumu ) - Osaka General Medical Center Department of Orthopaedic Surgery
 ( Maenaka Takahiro ) - Osaka General Medical Center Department of Orthopaedic Surgery
 ( Kano Hiroki ) - Osaka General Medical Center Department of Orthopaedic Surgery

Abstract


Study Design: Retrospective analysis of a case series of prospectively collected data.

Purpose: To compare clinical and radiological outcomes between two posterior lumbar interbody fusion techniques: cortical bone trajectory (CBT) and traditional pedicle screw (PS).

Overview of Literature: Biomechanical studies have revealed the benefits of the CBT technique. However, clinical evidence obtained from the direct comparison of outcomes between CBT and PS is limited.

Methods: We retrospectively investigated 104 patients who had undergone posterior lumbar interbody fusion using CBT or PS. Clinical symptoms were evaluated and compared between CBT and PS using the Japanese Orthopedic Association Back Pain Evaluation Questionnaire (JOABPEQ) and Visual Analog Scale (VAS) before and 1 year after surgery. Spinal fusion status was assessed by multiplanar reconstruction computed tomography at 1 year after surgery.

Results: The CBT and PS techniques were performed on 36 and 68 patients, respectively. Both CBT- and PS-treated patients exhibited improvement in each subdomain of the JOABPEQ and in the VAS. With regard to postoperative improvement of low back pain, the treatment effect, as assessed by the JOABPEQ, was greater for PS than for CBT. The spinal fusion rate was slightly lower for CBT than for PS, although the difference between them was not significant. The effect of treatment on postoperative low back pain was smaller for CBT than for PS, regardless of whether rigid spinal fusion was achieved.

Conclusions: Clinical symptoms and spinal fusion efficiency were not significantly different between CBT and PS except for postoperative improvement in low back pain. The treatment effect on postoperative low back pain was smaller for CBT than for PS.

키워드

Osteoarthritis; Spine; Spondylolisthesis; Pedicle screws; Low back pain

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