I am 61 years old male retired govt. Servant. I am suffering from leg knee joint pain on both legs for more than 6 years. I am diabetic for past 1 year. Asthmatic for more than 40 years. For the past six months both legs muscles sprain over and below the knee on backside. Due to skin allergy or varicose vein problem I am having wound in the left lower leg not healing for about 4 months. I need advice for knee pain and wound healing.