CPT® Code 0510T

The sinus tarsi is a small anatomical channel located between the talus and calcaneus bones, which are critical components of the ankle joint. This space plays a vital role in stabilizing the ankle by housing various structures that contribute to its function. In certain cases, particularly in patients with hyper-pronation of the foot, commonly referred to as flexible or mobile flatfoot, a sinus tarsi implant may be utilized. This implant serves to properly reposition the talus bone over the calcaneus bone, thereby limiting abnormal movements of the talus, a condition known as subtalar arthroereisis. The procedure for removing a sinus tarsi implant is indicated when a patient experiences significant pain or discomfort in the foot or ankle, which may arise from complications associated with the implant. The surgical approach involves making an incision on the lateral side of the hindfoot, directly over the sinus tarsi, followed by the careful debridement of scar tissue to expose the implant. Once the implant is accessible, it is grasped and removed, after which the incision is closed. This procedure is essential for alleviating pain and restoring function in patients who have undergone previous implantation.