Ankylosing Spondylitis is primarily a problem of the spine, but the arthritis there can also cause arthritis in the foot and pain in the heel. The involvement of the spine also means the feet are going to be difficult to reach to provide self care for foot problems.

Most Useful Resources:
Ankylosing Spondylitis (PodiaPaedia)
Ankylosing spondylitis (Foot Health Forum)
Heel Pain and Ankylosing Spondilitis ? (Podiatry Experts)
Impaired Gait in Ankylosing Spondylitis (Podiatry Arena)
Tarsal involvement in ankylosing spondylitis (Podiatry Arena)
Ankylosing spondylitis (Podiatry Arena)