Referred limb symptoms in chronic low back pain

Area of Science:

• Neurology
• Orthopedics
• Pain Management

Background:

• Chronic low back pain (CLBP) affects a significant portion of the working population.
• Referred limb symptoms (RLS) are frequently reported by individuals with CLBP, even without radicular signs.
• Understanding the prevalence and characteristics of RLS in CLBP is crucial for diagnosis and management.

Purpose of the Study:

• To investigate the prevalence and characteristics of referred limb symptoms in a cohort of working adults with chronic low back pain.
• To explore the relationship between RLS and demographic factors, subjective disability, and physical examination findings in CLBP patients.

Main Methods:

• A cross-sectional study involving 212 men and 126 women (aged 36-55) with chronic or recurrent low back pain.
• Data collection included questionnaires on RLS history, nature, and distribution, alongside assessments of subjective disability and physical examination of the lumbar spine and hips.
• Statistical analysis was performed to identify correlations between RLS and various clinical parameters.

Main Results:

• 17% of patients experienced daily RLS and 22% occasional RLS in the past few months; 34% reported previous RLS.
• The most common RLS sensations were pain (56%) and numbness (50%), predominantly affecting the leg (37%).
• RLS correlated significantly with subjective disability and lumbar spine pain, with specific associations noted for bilateral RLS in women and distal RLS in men.

Conclusions:

• Referred limb symptoms are a common and significant complaint in working individuals with chronic low back pain.
• RLS severity and distribution are associated with increased disability and specific clinical findings in the lumbar spine and hips.
• Further research into the mechanisms and targeted treatments for RLS in CLBP is warranted.