neuromascular assessment of limb specific symptoms and hamstring range of motion in lumbar disk herniation patients

Abstract

Abstract Introduction Hamstring flexibility plays a crucial role in spinal biomechanics, influencing posture, stability, and overall musculoskeletal health. Lumbar disc herniation, a common spinal disorder associated with pain and mobility limitations, may be impacted by differences in hamstring range of motion (ROM). This study investigates the relationship between symptom presentation in right and left limbs and bilateral hamstring ROM in patients with lumbar disc herniation, aiming to identify asymmetries that may inform rehabilitation strategies. Methods Thirty individuals diagnosed with lumbar disc herniation were evaluated, with 16 patients experiencing left-sided symptoms and 14 presenting with right-sided symptoms. MRI assessments determined disc condition severity, while hamstring ROM was measured using a goniometer during the passive straight leg raise test. The collected data were analyzed using a Linear Mixed Model to determine significant differences between groups. Results The findings revealed a significant reduction in hamstring ROM among patients with left-sided symptoms, with an estimated mean ROM of 150.75 degrees and a statistically significant decrease of 15.625 degrees (p = 0.000). In contrast, right-sided symptom patients showed a mean ROM of 140.50 degrees, but the observed increase of 4.625 degrees was not statistically significant (p = .143). These results highlight a clear asymmetry, suggesting that left-sided symptoms are more strongly associated with reduced hamstring flexibility. Discussion This study emphasizes the need for side-specific rehabilitation approaches, where left-sided symptom patients may benefit from focused flexibility interventions, while right-sided cases may require alternative strategies. Understanding the neuromuscular adaptations underlying this asymmetry can help optimize therapeutic techniques, improve patient outcomes, and contribute to more individualized treatment protocols for lumbar disc herniation. Future research should explore the mechanisms driving these differences to refine rehabilitation methods further.