Mechanical low back pain (LBP) generally results from an acute traumatic event, but it may also be caused by cumulative trauma. The severity of an acute traumatic event varies widely, from twisting one's back to being involved in a motor vehicle collision. Mechanical LBP due to cumulative trauma tends to occur more commonly in the workplace and Quadratus Lumborum injury plays an important role in causing MLBP. The aim of this study is To compare the effects of Electrical Dry Needling and Dry Needling on pain, endurance and range of motion in patients with Quadratus Lumborum Syndrome.

A Randomized Clinical Trial will be conducted at Ali Afzal Shah Dispensary and Inam ul Haq Clinic Lahore through consecutive sampling technique on 40 patients which will be allocated using simple random sampling and patients will be divided in Group A and B. Group A will receive Electrical Dry Needling along with conventional physiotherapy. The parameters for Electro dry needling will be needles of 30×0.25 mm, 50×0.25 mm sizes Frequency 80-100 Hz, Duration 10-30 minutes and intensity as tolerated 1 session per week along with 5 day conventional physiotherapy a week for 4 weeks. Group 2 will receive Dry Needling along with conventional Physiotherapy in which parameters will be dry needles will be 30×0.25 and 50×0.25 mm sizes once per week and 5 days of conventional Physiotherapy per week for 4 weeks. Data will be analyzed during SPSS software version 25. After assessing normality of data by Shapiro-Wilk test, it will be decided either parametric or non-parametric test will be used within a group or between two groups.

Inclusion Criteria:

• Age 25 to 45 years.
• Male and females both included.
• Muscle hypersensitivity on palpation
• Deep aching pain in sides of the lower back.
• Positive side-bridge test (Right < 83.2 sec and Left < 81.5 sec)
• Positive Simon's criteria for Quadratus Lumborum
• Patients with NPRS <7
• ODI score of < 40
• Decreased Lumber Side flexion and extension ROM
• Positive apperent Leg Length Discrepancy with more than 2 cm
• Negative Laslet's criteria for sacroiliac dysfunction

Exclusion Criteria:

• People with real leg length discrepancy
• People with any other medical condition Including Lumbar fracture, Spondylolisthesis, Ankylosing Spondylysis, Rheumatoid Arthritis. All these conditions will be ruled out with carefully history and examination.
• People taking any other form of treatment including corticosteroids, non-steroidal anti-inflammatory drugs or analgesics.
• People with previous history of surgical treatment for Lumbar spine. o People with neurological deficits or systemic illness