These are less serious because they can be diagnosed and treated while still in the developmental stage. They are called flexible hammertoes because they are still moveable at the joint.
This variety is more developed and more serious than the flexible condition. Rigid hammertoes can be seen in patients with severe arthritis, for example, or in patients who wait too long to seek professional treatment. The tendons in a rigid hammertoe have become tight, and the joint misaligned and immobile, making surgery the usual course of treatment.
Your podiatric physician/surgeon has been trained specifically and extensively in the diagnosis and treatment of all manner of foot conditions. This training encompasses all of the intricately related systems and structures of the foot and lower leg including neurological, circulatory, skin, and the musculoskeletal system, which includes bones, joints, ligaments, tendons, muscles, and nerves.
The information on this page is provided by The American Podiatric Medical Association, http://www.apma.org