EURORAD ESR

Case 2714

Os trigonum syndrome

Author(s)
Staikidou I , Mantzikopoulos G , Giannikouris G, Pikoulas K
 
Patient
male, 36 year(s)
 
 
  • Figure 1
    Lateral radiograph of the left ankle

    Lateral radiograph of the left ankle reveals the presence of an os trigonum (arrowhead).

     
    Area of Interest: unknown; Imaging Technique: Lateral radiograph of the left ankle;
     
     
  • Figure 2
    Sagittal turbo-STIR image
     

    Sagittal turbo-STIR image shows bone marrow edema within the os trigonum and high signal in the surrounding soft tissues consistent with inflammatory changes ( arrowhead).

     
    Area of Interest: unknown; Imaging Technique: Sagittal turbo-STIR image;

    Sagittal turbo STIR image in plantar flexion shows compression of soft tissues between the os trigonum and posterior tibia. (arrowhead).

     
    Area of Interest: unknown; Imaging Technique: Sagittal turbo-STIR image;
     
     
  • Figure 3
    Axial T1- weighted spin-echo image

    Axial T1- weighted spin-echo image shows capsular thickening lateral to the os trigonum at the area of posterior talofibular and posterior intermalleolar ligaments (asterisk). Flexor hallucis longus tendon appears...

     
    Area of Interest: unknown; Imaging Technique: Axial T1- weighted spin-echo image;
     
     
Lateral radiograph of the left ankle reveals the presence of an os trigonum (arrowhead).
 
Sagittal turbo-STIR image shows bone marrow edema within the os trigonum and high signal in the surrounding soft tissues consistent with inflammatory changes ( arrowhead).
 
Sagittal turbo STIR image in plantar flexion shows compression of soft tissues between the os trigonum and posterior tibia. (arrowhead).
 
Axial T1- weighted spin-echo image shows capsular thickening lateral to the os trigonum at the area of posterior talofibular and posterior intermalleolar ligaments (asterisk). Flexor hallucis longus tendon appears normal (arrowhead).
 
 
 
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