EURORAD ESR

Case 13725

Sciatic nerve palsy complicating posterior hip dislocation in a child

Author(s)
Sergio Savastano, Alessandra Costantini, Davide Dal Borgo, Stefano Trupiani, Leonardo Giarraputo

Ospedale, Radiologia,
Dipartimento di Diagnostica per Immagini;
v.le F. Rodolofi 37
36100 Vicenza, Italy;
Email:sergio.savastano@ulssvicenza.it
 
Patient
male, 9 year(s)
 
 
  • Figure 1
    Plain film (AP view)

    Cranial dislocation of the femoral head consistent with posterior dislocation.

     
    Area of Interest: Trauma; Imaging Technique: Plain radiographic studies; Procedure: Diagnostic procedure; Special Focus: Trauma;
     
     
  • Figure 2
    Computed tomography (* acetabular cavity)
     

    Paraaxial scan confirms the posterior dislocation of the hip and rules out bone fractures.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Trauma;

    Paracoronal reformation.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Trauma;
     
     
  • Figure 3
    Plain film after closed reduction
     

    AP view. The joint spaces of the hips are symmetrical.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: Plain radiographic studies; Procedure: Diagnostic procedure; Special Focus: Tissue characterisation;

    Oblique view.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: Plain radiographic studies; Procedure: Diagnostic procedure; Special Focus: Trauma;
     
     
  • Figure 4
    MRI (arrow: right sciatic nerve; curved arrow left sciatic nerve)
     

    Axial T2 imaging: The right sciatic nerve is thickened compared to the left sciatic nerve; fluid collection is also evident on the right side.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Tissue characterisation;

    Axial TS FS imaging: the right sciatic nerve appears slightly hyperintense.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Trauma;

    Axial T1 FS imaging.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Trauma;

    Coronal CE T1 FS imaging: the right sciatic nerve is enveloped by an inflammatory reaction.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Trauma;

    Coronal T2 FS imaging: focal oedema of right femoral head (arrowhead).

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Trauma;
     
     
Cranial dislocation of the femoral head consistent with posterior dislocation.
 
Paraaxial scan confirms the posterior dislocation of the hip and rules out bone fractures.
 
Paracoronal reformation.
 
AP view. The joint spaces of the hips are symmetrical.
 
Oblique view.
 
Axial T2 imaging: The right sciatic nerve is thickened compared to the left sciatic nerve; fluid collection is also evident on the right side.
 
Axial TS FS imaging: the right sciatic nerve appears slightly hyperintense.
 
Axial T1 FS imaging.
 
Coronal CE T1 FS imaging: the right sciatic nerve is enveloped by an inflammatory reaction.
 
Coronal T2 FS imaging: focal oedema of right femoral head (arrowhead).
 
 
 
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