Severe pain in right upper thigh.

On 28.07.2020, due to small accident, my Father fell down from two wheeler and he got his right upper thigh swollen and entire outer upper thigh blood clotted including some part of inner thigh. And Orthopedist in my hometown prescribed something medicines with an injection and told him to give salt heat pack at home, We got his X-ray report, report was normal, Orthopedist suggested him to wear knee cap as his right knee muscle got softened with severe pain. After one week of using that knee cap, today immediately after removing that knee cap, upper thigh swollen part, got hard as rock and became very painful with burning sensation with discomfort. He was not even able to move. He went to Doctor(other doctor, as he was not available) doctor gave 2 injections and one ointment. But still he is not feeling ok. Please give some suggestions.