ABSTRACT
Intraneural ganglion cysts are benign mucinous lesions that form within joints and
enter adjacent nerves via an articular branch. Despite being morphologically characterized
as benign, they can demonstrate considerable intrafascicular destruction and expansion,
resulting in worsening compressive neuropathies or nerve injury. There have been several
suggested theories of pathogenesis, but the most widely accepted articular (synovial)
theory describes a capsular defect in a neighboring joint that allows joint fluid
to egress and track along the epineurium of the innervating articular branch. In this
case report, we describe an intraneural ganglionic cyst located in the tarsal tunnel
with extensive involvement of the tibial nerve. We describe the symptoms, diagnosis,
and treatment as well as review the current literature on intraneural ganglionic cysts.
Level of Clinical Evidence
Keywords
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Article info
Publication history
Published online: May 01, 2019
Footnotes
Financial Disclosure: None reported.
Conflict of Interest: None reported.
Identification
Copyright
© 2018 by the American College of Foot and Ankle Surgeons. All rights reserved.
