I broke my heel bone about 20years ago and recently have had pain ,swelling if i walk to much and numbness and theres like a knot on my heel that has been there since i broke it.
A) A knot on bottom of foot could be the following –
- Plantar Fibroma
- Plantar facitis
- Malunion of bone after the fracture.
- Small tumor ( rare)
I would advice that you visit a orthopedic doctor and get the swelling evaluated.