Ross J S
Department of Diagnostic Radiology, Cleveland Clinic Foundation, Ohio, USA.
Magn Reson Imaging Clin N Am. 1999 Aug;7(3):513-24, viii.
The greatest costs associated with lower back pain occur in patients who have pain longer than three months and those with recurrent episodes of disabling pain. For these groups, evaluation by MR imaging is critical because it provides evidence for continued pain and functional incapacitation in 19% of cases. The causes of delayed recurrence of lower back and sciatic pain are multiple and include arachnoiditis, epidural fibrosis, facet osteoarthritic degenerative change, instability, new intervertebral disc herniation, spinal stenosis (lateral or central, from postoperative bony overgrowth), and vertebral osteomyelitis.
与下背痛相关的最大成本出现在疼痛持续超过三个月的患者以及有反复发作的致残性疼痛的患者中。对于这些群体，磁共振成像评估至关重要，因为它能在19%的病例中为持续疼痛和功能丧失提供证据。下背痛和坐骨神经痛延迟复发的原因是多方面的，包括蛛网膜炎、硬膜外纤维化、小关节骨关节炎性退变、不稳定、新的椎间盘突出、椎管狭窄（外侧或中央，由术后骨质过度生长引起）以及椎体骨髓炎。
