The Effect of Preoperative Paravertebral Muscle Degeneration on the Early Outcome of Single-Level PE-PLIF Surgery
Objective To investigate the correlation between the reduction in cross sectional area(CSA)and fatty infiltration(FI)of anterior paraspinal muscles and psoas major muscles,and the degree of pain and functional status prior to surgery.Furthermore,we aim to determine whether these factors influence the surgical outcomes of percutaneous endoscopic posterior lumbar interbody fusion(PE-PLIF).Methods A total of 110 patients with lumbar degenerative diseases who met the criteria and underwent single-level PE-PLIF surgery for the first time in the Orthopaedics Department of Shanxi Bethune Hospital from September 2021 to September 2022 were selected.The cohort consisted of 61 males and 49 females,ranging in age from 35 to 70 years,with an average age of(51.98±13.49)years.Prior to surgery,the relative cross sectional area(rCSA)of the paraspinal muscles and psoas major muscles,as well as the fatty infiltration of the paraspinal muscles,were measured.The Oswestry disability index(ODI)and visual analogue scale(VAS)were used to evaluate the patients'condition before surgery and at 1,6,and 12 months post-surgery.The correlations between variables were calculated using Pearson's and Spearman's correlation coefficients.The Kruskal-Wallis test was employed to compare the outcomes between subgroups with different rCSA values of the paraspinal and psoas major muscles and varying degrees of paraspinal muscle fatty infiltration.Results Paraspinal muscle fat infiltration was significantly correlated with ODI and VAS scores before operation(r=0.420,P＜0.001 and r=0.215,P=0.024).ODI scores at 1 month and 6 months after surgery showed that paraspinal muscle fat infiltration was associated with good prognosis(r=0.208,P=0.030 and r=0.192,P=0.044).Conclusion Paraspinal muscle fat infiltration is closely related to pain and dysfunction before operation,and is associated with good prognosis at 1 month and 6 months after operation.
paraspinal musclepsoas major musclefatty infiltrationlumbar degenerative disease
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