UPPER THIGH CRAMPS AND CALF SORE FROM KNEE REPLACEMENT 4 WEEKS AGO. DR. SAID IT’S USUAL. VERY TIRED AND NO UPPER BODY STRENGTH. TIRED AND WEEK. RETURN TO WORK IN 2 WEEKS. CAN’T SLEEP AT NIGHT BECAUSE OF PAIN. GO TO THERAPY 2 TIMES A WEEK AND ALSO DO HOME EXERCISES. LOWER BACK HURTS EVERY DAY. PLEASE NEED HELP.