musculoskeletal and connective tissue disorders
Tarsal Tunnel Syndrome
Diagnosis of Tarsal Tunnel Syndrome
Examination and electrodiagnostic testing Sometimes MRI Tapping or palpating the posterior tibial nerve below the medial malleolus at a site of compression or injury often causes distal tingling (Tinel sign). Although false-negative results on electrodiagnostic tests are somewhat common, a positive history combined with supportive physical findings and positive electrodiagnostic results makes the diagnosis of tarsal tunnel syndrome highly likely. Plantar heel and arch pain lasting > 6 months also strongly suggests distal tibial plantar nerve compression with entrapment. The cause of any swelling near the nerve should be determined. MRI is helpful in identifying any space-occupying lesion in the tarsal tunnel. 