<s>[INST] 5 weeks ago I had a knee replacement I am still experiencing pain and stiffness when should this subside. I am doing exercises 4 times a day, but not getting to the 90 degree . Should I be walking more to build strength. yesterday I stood for a length of time and feel like I lost any progress I have made. Help me to get on the right track karen [/INST] Brief Answer:Most likely require manipulation under anesthesia (MUA) by orthopedic surgeon.Detailed Answer:Warm Welcome. I appreciate your trust in HCM and assure you are on best portal on the globe for expert online medical services.I have thoroughly reviewed health query you raised, and well realize all of those concerns. Being your physician, I will take care all of them today and will extend my expertise to solve the problems.Painful stiffness after knee replacement is frustrating not only for patients but for us too. It is noted to be most common local complication after surgery. Usually the knee should gain its function by the end of 4th week. Based on what you said, you will most likely require manipulation under anesthesia by orthopedic surgeon. A revision surgery may also be planned instead but MUA has found to be most effective within first three months.You may take tab. naproxen 20mg once a day for your pain. Physiotherapy should be continued as advised and it is also mandatory after MUA.Hope I addressed all the concerns you have. Let me know if you have further questions. I will be more than happy to clear any doubts. Keep a follow up to see how you doing.Regards!Dr. Ali Raza </s>