Entrapment neuropathy of tibial nerve and its branches on medial aspect of ankle
→ pain, burning sensation, paraesthesia, and numbness of medial 3 toes, sole of foot, and heel region
2 forms of TTS
Upper (tibiotalar): Compression of tibial nerve within tarsal tunnel
Upper tarsal tunnel extends from retromalleolar region to proximal end of abductor hallucis muscle
Lower (tibiocalcaneal): Compression of plantar nerves in their separate tunnels deep and distal to abductor hallucis muscle
Lower tarsal tunnel lies deep to and distal to abductor hallucis muscle
IMAGING
General Features
MR Findings
Ultrasonographic Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
CLINICAL ISSUES
Presentation
Demographics
Treatment
Selected References
De Maeseneer M et al: Normal anatomy and compression areas of nerves of the foot and ankle: US and MR imaging with anatomic correlation. Radiographics. 35(5):1469-82, 2015
Related Anatomy
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References
Tables
Tables
KEY FACTS
Terminology
Imaging
TERMINOLOGY
Abbreviations
Tarsal tunnel syndrome (TTS)
Definitions
Entrapment neuropathy of tibial nerve and its branches on medial aspect of ankle
→ pain, burning sensation, paraesthesia, and numbness of medial 3 toes, sole of foot, and heel region
2 forms of TTS
Upper (tibiotalar): Compression of tibial nerve within tarsal tunnel
Upper tarsal tunnel extends from retromalleolar region to proximal end of abductor hallucis muscle
Lower (tibiocalcaneal): Compression of plantar nerves in their separate tunnels deep and distal to abductor hallucis muscle
Lower tarsal tunnel lies deep to and distal to abductor hallucis muscle
IMAGING
General Features
MR Findings
Ultrasonographic Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
CLINICAL ISSUES
Presentation
Demographics
Treatment
Selected References
De Maeseneer M et al: Normal anatomy and compression areas of nerves of the foot and ankle: US and MR imaging with anatomic correlation. Radiographics. 35(5):1469-82, 2015
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