Globally, the prevalence of total joint replacement (TKR) procedures has been rising, providing patients with better joint function, decreased pain, and enhanced quality of life. A thorough and successful postoperative rehabilitation program, which attempts to restore optimal function and lower the risk of problems related to the treatment, is necessary for the success of total knee replacement (TKR) procedures. After total knee replacement, postoperative rehabilitation is a crucial stage in the patient's healing process. Normal knee function is frequently hampered by issues like pain management, muscular weakness, joint stiffness, and proprioceptive deficiencies. Therefore, choosing a suitable rehabilitation regimen is crucial.

The main objective of this study is to compare two different rehabilitation strategies: Muscle Energy Techniques with Balance Exercises and High Intensity Strength Training with Balance Exercises. The research aims to maximize postoperative results for patients who have undergone total knee replacement surgery.

The focus on resistance exercises intended to improve muscle strength and power is what defines high intensity strength training, or HIST. Research has indicated that HIST is beneficial in enhancing joint stability, muscle function, and overall functional outcomes across a range of orthopedic groups. Its precise use and effect on patients recovering from TKR surgery, however, need further investigation. In order to increase joint mobility, lessen pain, and improve neuromuscular control, patients who get Muscle Energy Techniques (MET) actively participate in targeted muscle contractions. MET has demonstrated potential in treating muscular imbalances.

Inclusion Criteria:

• Individuals between the ages of 45 and 75
• Patients should be within a certain timeframe following surgery (e.g., post op day 0-day) to ensure homogeneity throughout the rehabilitation phase.
• Patients who have had primary total knee replacement
• To take part in the RCT, participants must give informed consent
• they must be able and willing to follow the study protocol's instructions for post-rehabilitation care.

Exclusion Criteria:

• Comorbidities: Individuals with significant comorbidities affecting rehabilitation, such as severe cardiovascular disease or neuromuscular disorders, may be excluded.
• Allergies/Contraindications: Patients with allergies or contraindications to specific exercises or techniques used in the study.
• Inadequate Cognitive Function: Participants with cognitive impairments that prevent them from comprehending and adhering to the rehabilitation protocols.
• Other Knee Surgeries: Patients who have had other knee surgeries or have had bilateral knee replacements may be excluded due to variations in recovery and rehabilitation.

outcome Assessor will be blind