Digital anatomy of lumbar spinous process tilt angle of adults in northeast China: prodinding reference for pedicle screw insertion

doi:10.3969/j.issn.2095-4344.2017.07.015

Abstract

Abstract:

BACKGROUND: Posterior lumbar fusion using pedicle screw-rod system fixation is the main surgical method for various lumbar diseases, and the accuracy of pedicle screw insertion is the key to success. Spinous processes

are superficial in position, which serve as a anatomical landmark providing significant reference.

OBJECTIVE: To analyze the anatomical classification of spinous process tilt of adult in northeast China, and to discuss the feasibility of it as the reference of anatomical landmark in pedicle screw fixation.

METHODS: The tilt angle of spinous processes of 97 adults in northeast China was measured, and spinous processes of lumbar vertebrae were then classified. All subjects underwent simulative operation to determine the optimal insertion angle, measure the angle between pedicle screw and the spinous process, or standard sagittal plane for comparative analysis.

RESULTS AND CONCLUSION: (1) The results were as follows: the distribution of type I was 75.1%, and 20.9% of type II, 2.3% of type III, 1.7% of type IV. Moreover, there were no significant differences in the angle between pedicle screw and the spinous process, or standard sagittal plane. (3) These findings suggest that lumbar spine angle varies in different individuals, which shouldbe defined through relative examinations. Additionally, spinous process can be a reference in pedicle screw inserting operation.

中国组织工程研究杂志出版内容重点：人工关节；骨植入物；脊柱；骨折；内固定；数字化骨科；组织工程

Key words: Bone Nails, Imaging, Three-Dimensiona, Lumbar Vertebrae, Anatomy, Tissue Engineeirng

CLC Number:

R318

Li Peng, Li Hong-wei, Wang Shuang, Wang Hai-zhou. Digital anatomy of lumbar spinous process tilt angle of adults in northeast China: prodinding reference for pedicle screw insertion [J]. Chinese Journal of Tissue Engineering Research, 2017, 21(7): 1064-1068.

Figures/Tables 2

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