This project was a Randomized clinical trial conducted on extensor lag in post-operative knee stiffness patient to compare the effects of The Daily Adjustable Progressive Resistive Exercise (DAPRE) technique versus Close kinetic chain (CKC) exercise training in people who had undergone knee stiffness, m so that we can have best treatment option for patients with extensor lag.

Probability Convenient sampling was done. Patients following eligibility criteria from Physiotherapy department of PSRD, Lahore, were considered. Sample size was calculated with Epi-tool calculator. 22 Participants were randomly allocated in two groups equally via convenient sampling method. Baseline assessment was done initially. Group A, 11 participants will receive Conventional physiotherapy treatment in addition to DAPRE technique by leg extension machine. In DAPRE technique, four sets of exercises were performed. The first two sets of exercise consisted of ten and then six repetitions, per- formed against one-half and three-fourths of the previously established working weight. Working weight is the amount of weight a patient uses during an individual session. The full working weight was used on the third set, and the patient performed as many repetitions as possible. After performing each of the third and fourth sets, patients rested for 1 min. 6 weeks (3 sessions per week)• Hot pack: 10 min• Stretching of calf and hamstring muscle: 10 min. Group B, 11 participants will receive Conventional physiotherapy treatment in addition to close kinetic chain exercises. Close kinetic chain exercises for extensor lag is seated leg press, double or single one third knee bend, step up and down exercise, wall slide with weight. Treatment time will be 30 minutes and three session per week will be applied on alternate day for up to 6 weeks. Pre interventional readings will be taken at baseline & post interventional readings at 6th week. 6 weeks (3 sessions per week) • Hot pack: 10 min • Stretching of calf and hamstring muscle: 10 min. All participants were provided written informed consent prior to commencement of the procedures. They were free to quit the treatment at any stage of research. Data was analyzed by using SPSS version 23.

Inclusion Criteria:

• Post-operative knee stiffness (patients with 1-3 month stiffness).
• Both male and female , age 30-60 years.
• Willing to participate in research.

Exclusion Criteria:

Pre-operative knee stiffness

• Severe cardiopulmonary disease
• Patients undergoing chemotherapy
• Any traumatic injury/ Acute inflammatory muscular pathology
• TKR & hip pathology and replacement
• Meniscal tear