The aim of this study is to find whether functional dry needle is helpful to increase the length of shortened hamstring muscle or not

Single pretest-post clinical trial to find immediate effects of functional dry needling to increase the length of the shortened hamstring. This study will be carried on single group which will include male subjects only. The data will be recorded before and immediately after the treatment. A monofilament stainless steel needle will be inserted on three points on hamstring muscle which will include semitendinosus, semimembranosus and bicep femoris. Treatment session will consist of 1 minute 20 seconds for each point on the hamstring and the manipulation will be performed by "Pistoning technique" in which the needle will be drawn out (not fully out of skin) after inserted and then again pushed in and data will be recorded after the treatment session on the basis of increase in length of hamstring which will be measure through 90-90 SLR (AKE) and on the lower extremity functional scale (LEFS)

Inclusion Criteria:

• Having hamstring length less than 80 degree during 90-90 SLR on goniometer,
• also the subject that suffers from knee Osteoarthritis,
• Spondylosis,
• LBP,
• Lumber radiculopathy,
• Subjects with MTrPs and those with hyper lordosis were recruited in the study

Exclusion Criteria:

• subjects suffering from blood clotting disorders such as hemophilia,
• those with deformities such as leg length discrepancy,
• compromised immune system,
• vascular diseases,
• Diabetes,
• People with congenital or metabolic bone disease such as Spondyloepiphyseal Dysplasia and Pregnancy were excluded from the study

assessor who helped to record the measurement was blinded