Hi, thanks for writing to HCM.
I feel that the calcifications in the gluteus tendon is only an incidental finding and they could have been there since a long time (as calcifications will not develop in a day or two) and has no relation with your present pain which has developed after a fall.
The pain in the upper thigh could be due to muscle spasm resulting due to blunt injury
which typically produces pain during movement.
* Avoid any movements that put strain over the hip joint
* intermittant hot fomentation for relaxing tight muscles
* local muscle relaxant
If symptoms are not resolving, consult an orthosurgeon for his advice
Hope this helps