Entrapment Neuropathies of the Foot and Ankle

Area of Science:

• Orthopedics
• Neurology
• Sports Medicine

Background:

• Tarsal tunnel syndrome encompasses several entrapment neuropathies affecting the foot.
• Compression of the posterior tibial nerve causes posterior tarsal tunnel syndrome.
• Anterior tarsal tunnel syndrome involves deep peroneal nerve entrapment, often presenting with pain in the first dorsal web space.

Purpose of the Study:

• To differentiate various forms of tarsal tunnel syndrome and related entrapment neuropathies.
• To highlight common presentations and diagnostic challenges, such as misdiagnosis as plantar fasciitis.
• To identify specific patient populations, like running athletes, prone to certain nerve compressions.

Main Methods:

• Clinical presentation analysis of different tarsal tunnel syndromes.
• Review of diagnostic criteria for nerve entrapment in the foot.
• Comparison of symptoms with conditions like plantar fasciitis and Morton neuroma.

Main Results:

• Posterior tarsal tunnel syndrome results from posterior tibial nerve compression.
• Anterior tarsal tunnel syndrome presents with pain radiating to the first dorsal web space.
• Distal tarsal tunnel syndrome, involving the lateral plantar nerve, is frequently misdiagnosed as plantar fasciitis.
• Medial plantar nerve compression is common in runners, causing medial arch pain.
• Morton neuroma is associated with repetitive hyperextension of metatarsal arches in athletes.

Conclusions:

• Accurate diagnosis of tarsal tunnel syndrome subtypes is crucial for effective treatment.
• Understanding the distinct clinical features aids in differentiating these conditions from other foot ailments.
• Recognition of specific nerve entrapments and their associations with activities like running is important for athletes and clinicians.