I am 74 old male and took a trip in Morocco in March end and climbed rough mountain and then I was walking fine for two weeks. After returning back to USA in first week of April. My knee start painful. It is getting better but still I have slight pain on my inside part of knee. If sit too long in chair and then get up I feel stiff knee for very short time and find when start walking. This is lasting for 3 weeks. I am wearing protecting knee brace during day. What should I do to improve my knee strength and reduce or eliminate pain on inside part of my knee. My physician ask me to take knee joint medicine over the counter like "Hyaluronic Joint Complex" which has Glucosamine. I do stretching and some exercises to strength my knee muscles. Do you suggest any exercises. Thanks.