Medial collateral ligament injury - grade 3

Case contributed by Lam Van Le
Diagnosis certain

Presentation

Swelling, pain, and restricted mobility of the right knee joint following a traffic accident.

Patient Data

Age: 30 years
Gender: Male
This study is a stack
Sagittal
PD fat sat
This study is a stack
Sagittal
T2
This study is a stack
Axial PD
fat sat
This study is a stack
Coronal PD
fat sat
This study is a stack
Coronal
T1
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Info

Complete discontinuity of the medial collateral ligament with increased signal intensity on PDFS in the ligament and surrounding tissues.

Complete discontinuity of the anterior cruciate ligament with laxity and increased ligament signal on PDFS and T2W images, accompanied by the "empty notch sign" on the axial plane.

Knee joint effusion is noted, predominantly in the suprapatellar bursa.

Soft tissue oedema is seen in the subcutaneous region around the knee joint.

Case Discussion

Imaging findings are consistent with a grade III medial collateral ligament injury (complete tear) accompanied by a complete tear of the anterior cruciate ligament.

The patient subsequently underwent arthroscopic surgery, which confirmed the diagnosis and involved reconstruction of the anterior cruciate ligament and medial collateral ligament.

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