Experimental: Instrument assisted soft tissue mobilization

IASTM with Graston tool along with conventional treatment in first 6 sessions. Apply hot pack for 10 mins on low back as passive warm up then AROM's of Hip (5 reps x 2 sets each) will be performed. Apply Graston tool at 30-60 degrees angle along the length of following muscles Piriformis, Gluteus medius and Hamstrings after applying emollient for 40-120 seconds.~Piriformis stretch, SLR, Sciatic nerve stretch (3 reps x 20 sec hold x 2 sets/3 days/week for 2 weeks).~Only Conventional protocol will be followed for remaining 6 sessions. 3 days/ week for 2 weeks. Hot pack will be applied for 10 minutes on low back followed by Strengthening exercises of Hip abductors (Hip abduction with band in sitting, standing, side-lying hip raise), and hip extensors (Gluteal bridges, Prone hip extension, Prone hams curl). (5 reps x 2 sets each/3 days/week for 2 weeks).

Other: Conventional Treatment

Only conventional treatment will be given in this group. Stretching exercises for 6 sessions and strengthening exercises for remaining 6 sessions.~For first 6 sessions, hot pack will be applied for 10 minutes on low back. AROM's of Hip (5 reps x 2 sets each/ 3 days/week for 2 weeks). Piriformis stretch 3 reps x 20 sec hold x 2 sets/ 3 days/week for 2 weeks. SLR (5reps x 10 sec hold x 2 sets/ 3 days/ week for 2 weeks). Sciatic nerve stretch (5 reps x 10 sec hold x 2 sets/ 3 days/ week for 2 weeks).~In next 6 sessions, strengthening exercises will be performed after applying hot pack on low back for 10 minutes in each session. Hip abductors strengthening (Hip abduction with band in sitting, standing, side-lying hip raise) 5reps x 2 sets each/ 3 days/ week for 2 weeks, and hip extensors (Gluteal bridges, Prone hip extension, Prone hams curl). (5 reps x 2 sets each/ 3 days/ week for 2 weeks).~SLR (5 reps x 10 sec hold x 2 sets 3 days/ week for 2 weeks).