Risk of blood clot during lipo- leg trauma?

Hello! I have had two BBLs and with the second my hips were made too wide for my linking, so I'd like to go back again for lipo only to reduce the hips and touch up other areas. Between my last surgery and now a heavy iron chair fell on the back of my leg, splitting the skin and causing a big trauma. It look months to heal and there's still a big lump behind the skin. Does this lump or injury put me at higher risk of blood clots? I'm terrified of the risks of another surgery!