The effect of posterior lumbar dynamic fixation and intervertebral fusion on paraspinal muscles

BMC Musculoskeletal Disorders

Guo-Wei Zhang¹  Zhi-Sheng Ji¹  Yong-Chun Xiao¹  Geng-Xiong Lin¹  Jian-Xian Luo¹  Yan-Ming Ma¹  Hong-Sheng Lin¹  Dian Xiang² 

[1] Department of Orthopedics, The First Affiliated Hospital of Jinan University, 510630, Guangzhou, China;Department of Orthopedics, The First Affiliated Hospital of Jinan University, 510630, Guangzhou, China;Department of Spine and Joint, Xiangxi National Hospital of Traditional Chinese Medicine, 416000, Jishou, China;

关键词: K-rod;    Dynamic internal fixation;    PLIF;    Lumbar degenerative disease;    Paraspinal muscles atrophy;    Fatty infiltration;   

DOI  :  10.1186/s12891-021-04943-w

来源: Springer

【 摘 要 】

BackgroundThe aim of this study was to analyze the effect of unilateral K-rod dynamic internal fixation on paraspinal muscles for lumbar degenerative diseases.MethodsThis study retrospectively collected 52 patients who underwent lumbar surgery with the K-rod group or PLIF. The operation time, intraoperative blood loss, postoperative drainage volume, postoperative exercise time were compared in the two groups. The visual analog scale (VAS) score and the oswestry dysfunction index (ODI) were employed to evaluate the clinical outcomes. The functional cross-sectional area (FCSA) of the paraspinal muscles and paraspinal muscles fat infiltration were measured to assess on the paraspinal muscles.ResultsAs compared with the PLIF group, the operation time, the postoperative time in the field, and the average postoperative hospital stay in the K-rod internal fixation group were significantly shortened. At the last follow-up, both the groups showed significant improvement in the VAS score and ODI. The FCSA atrophy of the upper and lower adjacent segments (UAS and LAS) of the K-rod internal group was significantly less than that of the PLIF group. The extent of increase in the fatty infiltration of the paraspinal muscles in the K-rod group was significantly lesser than that in the PLIF group. The postoperative low back pain of the two groups of patients was significantly positively correlated with the FCSA atrophy.ConclusionsAs compared to PLIF, the posterior lumbar unilateral K-rod dynamic internal fixation showed significantly lesser paraspinal muscle atrophy and fatty infiltration, which were significantly positively correlated with postoperative low back pain.

【 授权许可】

CC BY