A patient is coming to the ohopaedic surgeon with a hindfoot deformity for triple ahrodesis. Which of the following bones are fused in triple ahrodesis?
## **Core Concept**
Triple arthrodesis is a surgical procedure that involves the fusion of three joints in the hindfoot to treat severe hindfoot deformities, such as those caused by rheumatoid arthritis, trauma, or congenital conditions. The procedure aims to stabilize the hindfoot and alleviate pain.
## **Why the Correct Answer is Right**
The correct answer involves the fusion of the **subtalar joint**, **calcaneocuboid joint**, and **talonavicular joint**. These three joints are crucial for hindfoot motion and stability. Fusing them together can correct severe deformities and provide a stable hindfoot. The subtalar joint facilitates inversion and eversion, while the calcaneocuboid and talonavicular joints contribute to the flexibility and adaptability of the foot during gait.
## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because it does not specify the correct joints involved in a triple arthrodesis.
- **Option B:** This option is incorrect as it also does not accurately represent the joints fused during the procedure.
- **Option C:** Although not explicitly listed, any combination not including all three joints (subtalar, calcaneocuboid, and talonavicular) would be incorrect.
## **Clinical Pearl / High-Yield Fact**
A key point to remember is that triple arthrodesis is often considered for patients with severe, rigid hindfoot deformities that have not responded to conservative management. The procedure can significantly improve function and reduce pain but requires careful patient selection and surgical technique to avoid complications.
## **Correct Answer:** . **talonavicular, calcaneocuboid, and subtalar**