Subtalar joint arthritis
The subtalar joint is comprised of the talus that sits on top of the calcaneus and is a key joint with regard foot motion. It allows movement in all three planes and interacts closely with the ankle joint and joints of the midfoot to allow this motion.
As a result arthritic changes to the joint can cause marked discomfort and appropriate intervention is necessary. Changes to the joint do not always happen in isolation and there may be other issues with surrounding tendons and ligaments which must also be considered.