【論文摘要】The Area of Psoas Major and Multifidus and the Functional Performance Influenced by Age and Degenerative Spondylolisthesis and Stenosis

【論文摘要】腰大肌與多裂肌和功能表現受年齡及退化性腰椎滑脫伴隨脊椎狹窄影響

蔣昕恬(Shing-Tian Chiang) ； 許靖雯(Jin-Wen Koh) ； 胡尚芊(Shang-Chien Hu) ； 江奕璇(Yi-Hsuan Chiang) ； 王淑芬(Shwu-Fen Wang)

《物理治療》 46卷4期 (2021/12) Pp. 299-299

https://doi.org/10.6215/FJPT.202112.P02

摘要

Background and Purpose: Lumbar degenerative spondylolisthesis and stenosis (LDSS) is a common degenerative spinal disorder with instability and compensatory spur formation. Psoas major (PM) and multifidus (MF) of the lumbar spine enhance spinal stability. There is a limited study about the size of paraspinal muscles and the functional performance in patients with LDSS. The aim of the research is to investigate the factors, such as age and LDSS disease, which influence the area of PM, MF, and functional performance. Methods: The participants were recruited with or without LDSS. Cross sectional T1-weighted MRI images were used to measure the muscle cross sectional area (CSA) of the PM and MF. The area of fat infiltration was excluded by setting the threshold of the possible fat area to obtain the value of CSA of PM without fat (CSAp-) and MF without fat (CSAm-). The Oswestry back disability index, Time-up-and-go test (TUG), and time needed for five repetitions of sit-to-stand test (5STS) were also measured. Then, the linear regression model was used for the CSAp- and CSAm-, TUG, and 5STS using gender, age, and disease, etc. as independent factors. Results: 34 patients (age = 65.9 ± 7.3) with LDSS and 19 without LDSS (age = 38.4 ± 16.5) recruited. The CSAm- was 730.41 ± 184.07 mm^2, the CSAp- was 729.94 ± 286.85 mm^2, TUG was 9.8 ± 3.3 seconds, and 5STS was 10.9 ± 4.3 seconds in patients with LDSS. With LDSS disease and decreased age demonstrated significantly increased in CSAp-. Conclusions: With the age increased, the muscle mass of PM is decreased. Patients with LDSS increased in muscle mass of PM. The muscle mass of PM, yet not Multifidus, is sensitive to age and degenerative spinal disease. Further study could investigate PM in relation to functional performance in the aged and patient population. Clinical Relevance: Our results provide evidence of the age and degenerative effect on the muscle mass of PM, which stress the important role of PM in aging and degenerative process.