Close
Which subtalar joint is targeted in image guided injections?
The posterior subtalar joint.
Shown is a technically successful (posterior) right subtalar joint injection.
The first set of CT images are for planning; they demonstrate severe osteoarthrosis of the posterior subtalar joint as evidenced by bone-on-bone contact, subchondral sclerosis, osteophytes and tiny subchondral cysts. Incidentally, a bone island is noted in the calcaneum on the lowermost image.
In the second set of images, the needle enters from a superior approach (lateral) and iodinated contrast confirms an intra-articular position, filling the posterior subtalar joint.