<s>[INST] Hello. My husband had a large piece of plywood fall on his anterior tibia mid shaft about a month ago. It bled of course, then seemed to heal. He has since told me that a lump rose up and traveled distally towards his ankle (very near the maleolus) I am concerned it may be a clot that may dislodge and cause problems. [/INST] Hello, I have studied your case and I think that your husband may be having collection of blood in the shin. This get accumulated under the skin and causes hematoma. It is not a serious situation, and it will dissolve by its own. I would recommend you to use hot water fomentation and volition ointment.  I hope this answer will be useful for you. Let me know if there is any other followup questions. Thanks </s>