### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
my left knee has been gradually hurting and getting only worse each day more. I have been in pain some light and some days more painful. I DIDNT HAVE ANY INJURY. the only thing that happened was , I don t exercise and am overweight, one day I walked about 3-4 miles in a day consecutively for the next 3 days. Due to lack of exercise, I felt overexertion on my legs and on my left knee I felt and heard like a snapping or tearing/stretching of muscle . eversince that day my knee getting more painful to where it hurts for me to walk on it. please help

### output:

Hi, thank-you for providing the brief history of you. A thorough neuromuscular and musculoskeletal assessment is advised. As you mentioned your symptoms I suspect it to be either of the cases. Either it could be a soft tissue ligament injury or an early osteoarthritis of knee. As you are overweight and you don't exercise as well, this may be an indication of a sedentary lifestyle. The muscles would have gone weaker and due to the walk of 3-4 miles for non-stop 3 days, the muscles must have left its control and allowed the knee to produce the symptoms. Getting am MRI of the knee done can assist further to confirm if it is early signs of osteoarthritis of the knee or a ligament injury. Post which with simple medication and physical therapy you will be able to get back to normal. Usually patients respond in 2-3 weeks of time with 90% of functional abilities. In my clinical practice I have experienced patients with similar complaints, and they respond to a combination of medication and physical therapy. I even advice to reduce the weight by diet and exercise and the results are good. RegardsJay In Chat Doctor. 