The study investigated whether the use of carbon fiber-reinforced PEEK screw material (CF-PEEK) can reduce magnetic resonance imaging (MRI) artifact formation. Two consecutive groups of patients were treated for degenerative spinal disorders of the lumbar spine with dorsal transpedicular spinal fusion. The first group (n = 27) received titanium pedicle screws. The second group (n = 20) received CF-PEEK screws. All patients underwent an MRI assessment within the first four postoperative weeks. For each operated segment, the surface of the artifact-free vertebral body area was calculated as percentage of the total vertebral body. For each implanted segment, the assessability of the spinal canal, the neuroforamina, and the pedicle screws, as well as the surrounding bony and soft-tissue structures was graded from 1 to 5. A mean artifact-free vertebral body area of 48.3 ± 5.0% was found in the in the titanium group and of 67.1 ± 5.6% in the CF-PEEK group (p ≤ 0.01). Assessability of the lumbar spine was significantly improved for CF-PEEK screws (p ≤ 0.01) for all measurements. CF-PEEK pedicle screws exhibit smaller artifact areas on vertebral body surfaces and their surrounding tissues, which improves the radiographic assessability. Hence, CF-PEEK may provide a diagnostic benefit.

该研究调查了使用碳纤维增强 PEEK 螺钉材料 (CF-PEEK) 是否可以减少磁共振成像 (MRI) 伪影的形成。连续两组患者接受腰椎退行性脊柱疾病的治疗，采用背侧经椎弓根脊柱融合术。第一组（n = 27）接受钛椎弓根螺钉。第二组 (n = 20) 接受了 CF-PEEK 螺钉。所有患者在术后前 4 周内接受了 MRI 评估。对于每个手术节段，计算无伪影椎体面积的表面占椎体总面积的百分比。对于每个植入节段，椎管、神经孔和椎弓根螺钉以及周围骨和软组织结构的可评估性从 1 到 5 级。p  ≤0.01）。 对于所有测量，CF-PEEK 螺钉 ( p ≤ 0.01)的腰椎可评估性显着提高。CF-PEEK 椎弓根螺钉在椎体表面及其周围组织上表现出较小的伪影区域，这提高了放射学可评估性。因此，CF-PEEK 可提供诊断益处。