Muscle Control and Non-specific Chronic Low Back Pain

Area of Science:

• Musculoskeletal conditions
• Pain management
• Rehabilitation science

Background:

• Chronic low back pain (CLBP) is a widespread musculoskeletal condition with limited effective treatments.
• Non-specific CLBP (NSCLBP) may stem from disrupted motor control of lumbar multifidus (MF) muscles, crucial for spinal stability.
• Vertebral joint overload due to functional instability can lead to nociceptive CLBP.

Purpose of the Study:

• To review evidence on MF involvement in CLBP.
• To explore mechanisms of disrupted MF control.
• To discuss options for restoring MF control as a treatment for NSCLBP.

Main Methods:

• Literature review of studies on MF function in CLBP.
• Analysis of mechanisms underlying motor control disruption.
• Evaluation of therapeutic strategies for restoring MF control.

Main Results:

• Imaging techniques for assessing MF motor control dysfunction have limitations in diagnostic utility.
• Specific exercises can restore MF motor control in some patients, but population-level results are not persuasive.
• Many patients struggle with voluntary MF contraction due to factors like arthrogenic muscle inhibition.

Conclusions:

• Targeting MF motor control presents a potential new treatment avenue for NSCLBP.
• Restorative neurostimulation shows promise for improving MF control and alleviating CLBP.