Case Report

Journal of Orthopaedics and Traumatology

, Volume 10, Issue 3, pp 147-150

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Fibroma of tendon sheath located within the ankle joint capsule

  • Riccardo CiattiAffiliated withCasa di Cura “Villa Stuart” Email author 
  • , Pier Paolo MarianiAffiliated withIstituto Universitario di Scienze Motorie


We report a very rare case of fibroma of the tendon sheath arising from the anteromedial ankle joint capsule, with no apparent connection to any tendon in the area, found in a 58-year-old patient complaining of progressive local swelling. This uncommon tumor has its usual localization in tendon sheaths, is extremely rare in joint capsules, and has never been described in this location previously. MRI showed nonuniform low signal intensity in T1- and T2-weighted images and high intensity in STIR images. The mass was completely excised by open surgery. Histopathological analysis later confirmed the diagnosis of a fibroma of the tendon sheath.


Tumor Tendon sheath Fibroma Ankle joint