Etiology — what causes it
Disc material extruding into the canal or foramen, compressing or chemically irritating a lumbar nerve root. Combined mechanical and inflammatory contribution.
Epidemiology — who gets it
Annual incidence of clinically significant herniation with radiculopathy is around 1–2% (Konstantinou & Dunn, Spine). Peak age 30–50.
Clinical signs
Positive straight leg raise reproducing leg-dominant symptoms, dermatomal sensory deficit, myotomal weakness, reflex changes, centralization with directional preference testing.
Symptoms
Low back pain with radiating leg pain following a dermatomal pattern. Often worse with sitting and forward bending, relieved by walking or lying down.
Best evidence for chiropractic treatment
The SPORT trial (Weinstein et al., JAMA) and Cochrane reviews (Lewis et al., 2015) confirm that conservative and surgical outcomes converge by 1–2 years for most patients. Conservative care includes graded exposure, neural mobilization, directional preference exercises (McKenzie approach), and education. Surgery is reserved for progressive neurological deficit, cauda equina, or persistent disabling symptoms after 6–12 weeks of structured conservative care.
When to seek emergency care
Some symptoms need urgent medical attention — not a chiropractic visit. Call 911 or go to the nearest emergency department for: progressive limb weakness, loss of bowel or bladder control, saddle anesthesia (numbness in the groin/inner thighs), severe unrelenting pain unrelieved by position, signs of fracture after significant trauma, chest pain, stroke-like symptoms (face drooping, arm weakness, speech changes), or any rapidly worsening or unusual symptom.
Bottom line
Most disc herniations with radiculopathy improve with conservative care over 6–12 weeks. Surgery isn't the default — structured rehab is.