<s>[INST] my husband has back problem, developed leg and knee pain. knee and back pain better since rehab. Now pain in calf. negative venous doppler study. Xray of knee showed osteoarthritis with effusion. Back of knee black from bruise , heel also bruised ? what's going  on?? [/INST] HiThis are age related changes.Your husband needs to do exercise daily for knee and spine along with hot and cold dipping of leg for heel pain. Besides this should take morning Sundays and calcium diet. If too much pain in knee in future may need knee replacement.Get well soon. </s>