Síndrome del túnel de Tarsal causado por el ganglio epineural del nervio tibial

Síndrome del túnel de Tarsal causado por el ganglio epineural del nervio tibial posterior: Informe de dos casos y revisión de la literatura.

Ikuo Fujita, MD1* [MEDLINE LOOKUP] Keiji Matsumoto, MD2 [MEDLINE LOOKUP] Takato Minami, MD3 [MEDLINE LOOKUP] Tomohiko Kizaki, MD4 [MEDLINE LOOKUP] Toshihiro Akisue, MD5 [MEDLINE LOOKUP] Tetsuji Yamamoto, MD6 [MEDLINE LOOKUP]

Abstract

Ganglia within the posterior tibial nerve is a rare condition. The authors report 2 cases of epineural ganglion of the posterior tibial nerve, causing tarsal tunnel syndrome. Both cases presented with numbness on the plantar surface of the foot. Magnetic resonance imaging showed the presence of the cyst within the tarsal tunnel. During surgery, these cysts were found within the epineurium of the posterior tibial nerve and were successfully removed without damage to nerve fibers. Both patients were free of symptoms after surgery. Ganglion cysts in the peripheral nerve are either intrafascicular or epineural. Intrafascicular ganglia present beneath the epineurium and involve the nerve fibers, whereas epineural ganglia are located in the epineurium and do not involve the nerve fibers. A review of the literature discusses these concepts. The authors suggest that epineural ganglion should be clinically distinctive from an intrafascicular ganglion because of the differences in surgical treatment, postoperative nerve function, and the recurrence rate.

The Journal Foot & Ankle Surgery. May 2004. Volume 43. Number 3.

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