title: Neurilemmoma of the first branch of the lateral plantar nerve causing tarsal tunnel syndrome.
abstract: In this article, the authors report a case of tarsal tunnel syndrome caused by neurilemmoma of the first branch of the lateral plantar nerve, with symptom resolved after excision. A 42-year-old man presented with left medial heel pain radiating to the lateral sole for 6 months. On examination, there was positive Tinel sign over the medial heel with pain radiating to the lateral sole. Ultrasonography and magnetic resonance imaging confirmed the presence of a 1-cm neurogenic tumor inside the tarsal tunnel. Intraoperatively, a 1-cm neurilemmoma was found at the first branch of the lateral plantar nerve inside the tarsal tunnel. The lesion was excised completely with preservation of its fascicle. The symptom resolved completely after the operation.
authors.affiliation: Department of Orthopaedics and Traumatology, North District Hospital, Hong Kong, China.
authors.forename: Ka Bon
authors.initials: KB
authors.lastname: Kwok
authors.forename: Tun Hing
authors.initials: TH
authors.lastname: Lui
authors.forename: Wing Nin
authors.initials: WN
authors.lastname: Lo
mesh_terms: D000328:Adult; D005534:Foot Diseases / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009442:Neurilemmoma / Q000150:complications* / Q000000981:diagnostic imaging / Q000601:surgery*; D009985:Orthopedics / Q000379:methods*; D013641:Tarsal Tunnel Syndrome / Q000209:etiology*; D013979:Tibial Nerve / Q000601:surgery; D014463:Ultrasonography