A recent study compared the clinical effectiveness of spinal manipulation (chiropractic) against surgery in patients with sciatica secondary to lumbar disk herniation (LDH)? and concluded that 60% percent of patients with sciatica who had failed other medical management benefited from spinal manipulation to the same degree as if they underwent surgical intervention. Of 40% left unsatisfied, subsequent surgical intervention confers excellent outcome. Patients with a symptomatic herniated disc failing medical management should consider spinal manipulation followed by surgery if warranted.
Source: Journal of Manipulative and Physiological Therapeutics Volume 33, Issue 8, October 2010, Pages 576-584