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- Title
Magnetic Resonance Neurography in Analysis of Operative Safety of Transforaminal Lumbar Interbody Fusion in Chinese Subjects.
- Authors
Wang, Hong‐li; Jiang, Jian‐yuan; Lv, Fei‐zhou; Yang, Sheng‐da; Ma, Xin; Chen, Wen‐jun; Ma, Xiao‐sheng; Xia, Xin‐lei; Wang, Li‐xun
- Abstract
Objective To measure relevant anatomical variables of lumbosacral nerve root and adjacent structures by magnetic resonance neurography ( MRN) and analyze operative safety of transforaminal lumbar interbody fusion ( TLIF) in Chinese subjects. Methods Twelve normal healthy volunteers (six men, six women) underwent MRN of lumbosacral nerve roots at 3.0 T. Three-dimensional imaging was reconstructed with Osirix software and the following anatomic variables measured: (i) distance between nerve root and upper pedicle; (ii) distance between nerve root and lower pedicle; (iii) angle between nerve root and sagittal plane; (iv) distance between upper and lower nerve roots; and (v) distance between upper and lower pedicles. Results Good images of the L1- L5 nerve roots were obtained by MRN technology in all 12 volunteers. The distance between nerve root and upper pedicle and the angle between nerve roots and the sagittal plane gradually diminished from L1 to L5. However, there were no significant variations in the distance between nerve root and lower pedicle or between upper and lower pedicles. From L1-2 to L4-5, the distances between upper and lower pedicles, which are closely related to the operating space for TLIF in Chinese men and women, were less than 10 mm in most subjects and were significantly smaller in women than in men. The variables did not differ significantly between the left and right sides of the same segment. Conclusion Based on the above anatomical study and measurement analysis, we believe that TLIF puts the upper nerve root at risk in some Chinese patients. However, this conclusion requires confirmation by anatomical study of large samples and clinical validation.
- Subjects
MAGNETIC resonance; LUMBAR vertebrae diseases; CHINESE people; SPINAL fusion; ANATOMY; DISEASES
- Publication
Orthopaedic Surgery, 2014, Vol 6, Issue 3, p203
- ISSN
1757-7853
- Publication type
Article
- DOI
10.1111/os.12115