<s>[INST] I am 51 years old. . I did a split the other night and something popped by my groin at to inside my leg. Now I have a bitch from top of leg to back of my knee. Looks like a bruse but it doesn t hurt. It is traveling down my leg. Should I be concerned [/INST] Hello Thank you for trusting HCM Bruising due to fragile blood vessels. Most commonly seen subcutaneous bruising. But it can cause intra articular also. Bruising suggeste deficiency of vitamins like c, vitamin - K and some anti coagulation drugs. People with clotting factor deficiency and liver problems also cause it. But once consult a doctor before confirming it normal. </s>