EURORAD ESR

Case 14379

Bilateral Double-Layered Patella (DLP) with supra-patellar impingement

Author(s)
João Araujo; Carlos Macedo; Ana Alves; João Amorim; João Oliveira

Rua Professor Rodolfo Abreu, N299, Hab C63 4150-637 Porto, Portugal; Email:joaoaraujo.rad@gmail.com
 
Patient
male, 22 year(s)
 
 
  • Figure 1
    axial CT- bone window

    Left and right knee with two patellar layers and normal patellofemoral joint space.

     
    Area of Interest: Musculoskeletal bone; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Dysplasias;
     
     
  • Figure 2
    Sagittal T1 and T2* MRI:Left knee
     

    Cartilage tissue between the two layers. The anterior osseous patellar layer is attached to the extensor mechanism.

     
    Area of Interest: Abdominal wall; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Dysplasias;

    Cartilage tissue between the two layers. The anterior osseous patellar layer is attached to the extensor mechanism.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Dysplasias;
     
     
  • Figure 3
    Axial gradient echo FS MRI imaging- left knee

    Cartilage between the two patellar layers.

     
    Area of Interest: Musculoskeletal joint; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Dysplasias;
     
     
  • Figure 4
    sagittal proton density with fat suppression FSE MRI- Left knee

    Abnormal convex posterior border of the suprapatellar fat pad associated with fluid like signal replacing the normal suprapatellar fat pad.

     
    Area of Interest: Musculoskeletal bone; Imaging Technique: MR; Procedure: Diagnostic procedure; Special Focus: Dysplasias;
     
     
Left and right knee with two patellar layers and normal patellofemoral joint space.
 
Cartilage tissue between the two layers. The anterior osseous patellar layer is attached to the extensor mechanism.
 
Cartilage tissue between the two layers. The anterior osseous patellar layer is attached to the extensor mechanism.
 
Cartilage between the two patellar layers.
 
Abnormal convex posterior border of the suprapatellar fat pad associated with fluid like signal replacing the normal suprapatellar fat pad.
 
 
 
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