<s>[INST] I got kicked by a horse on Sunday. I have a huge long bruise taking up the majority of the outside of my femur and on the side of my knee. On my knee I have a large lump and very dark colored bruise except in the middle is white. And it s super tender. What is this? [/INST] Hello, As I can understand from the history, I feel this is a blood clot happened due to muscle injury over the thigh. Since you mention the knee I will recommend you to get it examined and also an MRI on a safety basis as sometimes the inflammation in the tissues get septic and needs proper medical attention. For now, you can do quick icing to reduce pain and inflammation. Any ignored injury leads to problems in the latter stages of life. Hope I have answered your query. Let me know if I can assist you further. Regards, Jay Indravadan Patel, Physical Therapist or Physiotherapist </s>