What best describes Tarsal Tunnel Syndrome?

• A. Anterior knee pain from patellar tracking
• B. Compression neuropathy of the lateral plantar nerve
• C. Compression neuropathy of the tibial nerve or its branches
• D. Complication due to ankle fracture

Answer: (C)

Tarsal Tunnel Syndrome is best described as compression of the tibial nerve or its branches as they pass through the tarsal tunnel, an anatomical structure located on the medial side of the ankle. This syndrome occurs when there is increased pressure within the tarsal tunnel, leading to symptoms such as pain, tingling, or numbness in the foot, especially in the plantar aspect. The tibial nerve supplies sensation to the sole of the foot and innervates several intrinsic muscles, so when this nerve is compromised, it can result in significant functional impairment and discomfort.

In contrast, the other descriptions provided do not accurately characterize Tarsal Tunnel Syndrome. Anterior knee pain from patellar tracking is typically associated with issues related to the patella and its alignment, not the tarsal tunnel area. Compression of the lateral plantar nerve would refer to a different condition, potentially involving the superficial branch of the tibial nerve, but not specifically the tarsal tunnel. Lastly, while an ankle fracture could lead to various complications, it does not directly define Tarsal Tunnel Syndrome. Thus, the compression neuropathy of the tibial nerve or its branches is the hallmark of this condition, making it the most appropriate description.