What Causes Muscle Pain In Left Thigh?

Question: i have been having very bad muscle pain in my left thigh way over a 10 4mg morphin bring the pain down to a 10 i have had 13 operation on this leg staring in 2008 broke the hip had rods put in got msra so bad had to go in and clean it several times ,broke leg in 2011 when i stood up to use bathroom plate was put in,got msra again had all hardwear replace in 2012,i haven"t walk sents doctors say they are afaird i will break some more bones i have had many stress fractures in both legs i also have a rod in right leg . this is all due to long term sterorid use for lupus. i have been on 15mg sent 2002 during flares increse thenhurts the worst tapper down, anyway about 3 mos ago started getting horrible muscle pain leg is very swollon 25in right is 21in where scare is from knee to hip there are 3 big knots that keep growing very hard very painful, not hot or red, on top and inner thigh hurts the worst that muscle gets so hard like a rock last about 5 mims then that part of the leg starts shaking,now the last few days i have no control over that leg when the shaking stops.if i sit still in my recliner i don"t feel pain unless i have a spasm which happens moore often everyday up to about 20 a day i only sleep 1 to 2 hrs at a time then pain meds wear off, i take 1 5mgoxycodine and i 2mg mophin this helps for about 2 hrs ,went to er they say well you know you been thought alot with that leg the weathers changing your getting older 55 xray look good no new breaks. i tell them its not bone its muscle or tissue,they did doppler of vains told them its not that they won't listen. labs show wbc 11.7 rdw 16.6 neutrophils 8.1 immature grans 0.2 c-reactive protein 39.95 sed rate 46 all these high blood in urine, no fever 98.8 n0mal for 97.3 bp normal 128 89 oxy 91 no appt,please help me i don"t know what to do any more the pain is so bad i want the leg gone