Evaluation of lumbar multifidus muscle injury using ultrasound multi-feature:a prospective study
Objective:To evaluate the ultrasound(US)characteristics of lumbar multifidus muscle in patients with chronic low back pain and asymptomatic volunteers by multi-parameter imaging.Methods:From March 2022 to August 2023,sixty patients with chronic low back pain and sixty asymptomatic volunteers(asymptomatic group)were prospectively enrolled in our study.The thickness and area of the multifidus muscle,the thickness of the L3 fascia and the elastic modulus of the multifidus muscle were measured by two sonographers.The consistency of the above features and the change trend of different lumbar vertebral segments were evaluated,and the differences of the US features were compared between the two groups.Results:The ultrasound features were good of consistency.With the continuous increase of lumbar segments,the thickness and area of the multifidus muscle increased.Compared with the asymptomatic group,the thickness of L3~4,L4~5 multifidus muscle and the area of L2~3,L3~4,L4~5 multifidus muscle were significantly reduced,L3 fascia thickness was significantly increased and the multifidus muscle elasticity was significantly increased in the low back pain group.Conclusion:The ultrasonic features of lumbar multifidus muscle can be significantly changed in patients with low back pain,suggesting that lumbar multifidus muscle injury may be an important cause of low back pain.
low back painmultifidus musclesvisual analogue scaleultrasonographyelasticity