EURORAD ESR

Case 9470

A complex posterolateral corner injury

Author(s)
Evangelos Perdikakis, Ioannis Petkidis

412 General Military Hospital, Department of Radiology;
Terma Lefkou Pyrgou 67100 Xanthi, Greece;
Email:perdikakis_ev@yahoo.gr
 
Patient
male, 27 year(s)
 
 
  • Figure 1
    Clinical evaluation
     

    Note abnormal fibular head motion (white arrow) during clinical evaluation for rotational instability.The small black arrows show skin abrasions in the anteromedial proximal tibia.

     
    Area of Interest: Musculoskeletal system;

    Note abnormal fibular head motion during clinical evaluation for rotational instability.

     
    Area of Interest: Musculoskeletal system;
     
     
  • Figure 2
    Ultrasound examination

    The longitudinal US images show a hypoechoic area posterolaterally to the fibular head (open arrow). Yellow arrow indicates the lateral meniscus.

     
    Area of Interest: Musculoskeletal joint;
     
     
  • Figure 3
    MRI (Coronal T2-w fat saturated MR images )
     

    The coronal T2-w fat saturated MR images show increased signal in and around the popliteal musculotendinous unit (open arrow). Note normal signal and insertion of the biceps tendon (yellow arrow).

     
    Area of Interest: Anatomy; Musculoskeletal system; Imaging Technique: MR; Special Focus: Pathology;

    Note a wavy popliteofibular ligament (small yellow arrow), increased signal in the lateral collateral ligament(open arrow), tibial bone marrow oedema (dotted line), fluid in the tibiofibular space (asterisks). ACL:red...

     
    Area of Interest: Anatomy; Musculoskeletal system; Imaging Technique: MR; Special Focus: Pathology;
     
     
  • Figure 4
    MRI (Sagittal T2-w fat saturated MR images)
     

    Open arrow: popliteal tendon, yellow arrow: popliteofibular ligament, small white arrows: fluid in popliteal muscle fasciae, asterisks: fluid signal in the interosseous membrane.

     
    Area of Interest: Anatomy; Musculoskeletal system; Imaging Technique: MR; Special Focus: Pathology;

    Thick white arrow: anterior tibiofibular ligament, open arrow: popliteal tendon, yellow arrow: popliteofibular ligament, small white arrows: fluid in popliteal muscle fasciae, asterisks: fluid signal in the...

     
    Area of Interest: Anatomy; Musculoskeletal system; Imaging Technique: MR; Special Focus: Pathology;

    Thick white arrow: anterior tibiofibular ligament, asterisks: fluid signal in the interosseous membrane, dotted line: tibial bone marow oedema.

     
    Area of Interest: Anatomy; Musculoskeletal system; Imaging Technique: MR; Special Focus: Pathology;
     
     
  • Figure 5
    MRI (Axial T2-w fat saturated MR images)
     

    Red arrow: anterior tibiofibular ligament (note partial rupture), asterisk: fluid signal between the anterior tibiofibular ligament fibres, yellow arrow: posterior tibiofibular ligament, open arrow: popliteal muscle...

     
    Area of Interest: Anatomy; Musculoskeletal system; Imaging Technique: MR; Special Focus: Pathology;

    Note fluid signal around the interosseous tibiofibular membrane (open arrow).

     
    Area of Interest: Anatomy; Musculoskeletal system; Imaging Technique: MR; Special Focus: Pathology;
     
     
Note abnormal fibular head motion (white arrow) during clinical evaluation for rotational instability.The small black arrows show skin abrasions in the anteromedial proximal tibia.
 
Note abnormal fibular head motion during clinical evaluation for rotational instability.
 
The longitudinal US images show a hypoechoic area posterolaterally to the fibular head (open arrow). Yellow arrow indicates the lateral meniscus.
 
The coronal T2-w fat saturated MR images show increased signal in and around the popliteal musculotendinous unit (open arrow). Note normal signal and insertion of the biceps tendon (yellow arrow).
 
Note a wavy popliteofibular ligament (small yellow arrow), increased signal in the lateral collateral ligament(open arrow), tibial bone marrow oedema (dotted line), fluid in the tibiofibular space (asterisks). ACL:red arrow-line, PCL:yellow arrow-line
 
Open arrow: popliteal tendon, yellow arrow: popliteofibular ligament, small white arrows: fluid in popliteal muscle fasciae, asterisks: fluid signal in the interosseous membrane.
 
Thick white arrow: anterior tibiofibular ligament, open arrow: popliteal tendon, yellow arrow: popliteofibular ligament, small white arrows: fluid in popliteal muscle fasciae, asterisks: fluid signal in the interosseous membrane.
 
Thick white arrow: anterior tibiofibular ligament, asterisks: fluid signal in the interosseous membrane, dotted line: tibial bone marow oedema.
 
Red arrow: anterior tibiofibular ligament (note partial rupture), asterisk: fluid signal between the anterior tibiofibular ligament fibres, yellow arrow: posterior tibiofibular ligament, open arrow: popliteal muscle (note perifascial fluid signal).
 
Note fluid signal around the interosseous tibiofibular membrane (open arrow).
 
 
 
Home Search Sections Teaching Cases History FAQ Case Archives Contact Login Disclaimer Imprint Switch to MOBILE version
View desktop version