Sixty patients with Lower Back Pain (LBP) and sciatica were randomized to sciatic nerve slider technique (SST) in a slump position plus conventional physiotherapy (n=20), SST in a supine position plus conventional physiotherapy (n=20), or conventional physiotherapy alone (n=20). The primary outcomes were pain (NPRS) and disability (ODI). Secondary outcomes included lumbar flexion ROM (Modified Schober), lumbar lordosis angle, and handheld-dynamometry strength of key lower-limb groups. Interventions were delivered three times weekly for four weeks; outcomes were assessed at baseline and within 48 hours post-treatment. Overall, the slump-position SST achieved larger improvements in NPRS, ODI, lumbar ROM, and select strength measures than the supine position and control, while both SST positions outperformed conventional therapy alone. These findings suggest incorporating SST—preferably in the slump position—enhances short-term clinical outcomes in chronic radicular LBP.