A Case Report and Literature Review: Intraneural Ganglion Cyst Causing Tarsal Tunnel Syndrome |
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| Affiliation: | 1. Attending, Central Vermont Medical Center, Department of Orthopedics, Berlin, VT;2. Chief Resident, Division of Podiatric Surgery, Beth Israel Deaconess Medical Center, Boston, MA;3. Clinical Fellow in Surgery, Harvard Medical School, Boston, MA;4. Attending, Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA;5. Associate Professor in Pathology, Harvard Medical School, Boston, MA;6. Co-Director, Extremity Microsurgical Reconstruction, University of Colorado, Anschutz Medical Campus, Aurora, CO;7. Associate Professor in Surgery, University of Colorado, Aurora, CO;8. Associate Professor in Surgery, Harvard Medical School, Boston, MA;9. Chief, Division of Podiatric Surgery, Beth Israel Deaconess Medical Center, Boston, MA;1. Surgeon, White Memorial Medical Center, Los Angeles, CA;2. Surgeon, University of Southern California Keck School of Medicine, Los Angeles, CA;3. Associate Professor and Surgeon, University of Southern California Keck School of Medicine, Los Angeles, CA;1. Orthopaedic Resident, Department of Orthopedics, The Ohio State University Wexner Medical Center, Columbus, OH;2. Assistant Professor, Department of Orthopedics, The Ohio State University Wexner Medical Center, Columbus, OH;3. Surgeon, OrthoNorCal, Los Gatos, CA;4. Medical Student, Department of Orthopedics, The Ohio State University Wexner Medical Center, Columbus, OH;5. Associate Professor, Department of Orthopedics, The Ohio State University Wexner Medical Center, Columbus, OH |
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| 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. |
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