Subtalar joint fusion refers to a surgical procedure to treat foot and ankle deformities. It is a better way to treat severe osteoarthritis or traumatic arthritis. Subtalar fusion is a surgical treatment for common lesions of the hindfoot such as primary subtalar arthritis, traumatic subtalar arthritis, rheumatoid arthritis, and other immune arthritis. In addition, talar fusion can also treat conditions such as posterior tibial tendon dysfunction (PTTD), talar joint instability, flat feet, and high arched feet. However, there may still be some pain and discomfort after subtalar joint fusion, going up and down stairs, and walking and running at a fast pace. The advantage is that weight bearing is possible. Generally, there is no significant pain or discomfort after the surgery. If symptoms related to the above are present, subtalar joint fusion may be considered under the direction of your doctor.