The evaluation of lumbar multifidus muscle function via palpation: reliability and validity of a new clinical test

摘要: Background context The lumbar multifidus muscle provides an important contribution to spine stability, and the restoration of function is a frequent goal rehabilitation. Currently, there are no reliable valid physical examination procedures available assess among patients with low back pain. Purpose To examine inter-rater reliability concurrent validity lift test (MLT) identify dysfunction pain. Study design/setting A cross-sectional analysis performed in university outpatient research facility. Patient sample Thirty-two persons aged 18 60 years current pain minimum modified Oswestry disability score 20%. Study participants were excluded if they reported history surgery, radiculopathy, medical red flags, osteoporosis, or had recently been treated spinal manipulation trunk stabilization exercises. Outcome measures Concurrent measures at L4–L5 L5–S1 levels obtained MLT (index test) real-time ultrasound imaging (reference standard). Methods The was examined by measuring level agreement between two blinded examiners. Concurrent investigated comparing clinicians' judgments function. Results Inter-rater substantial excellent (κ=0.75 0.81, p≤.01) free from errors bias prevalence. When L5–S1, demonstrated evidence through its relationship reference standard results (rbis=0.59–0.73, p≤.01). The generally failed demonstrate level. Conclusions Our provide preliminary supporting level. Additional examining measurement properties utility this should be undertaken before confident implementation patients.