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Mcl Injury
 

Author: Tyler Schmitz, DO
Affiliation: Blue Ridge Orthopedics, Anderson SC
Senior Editor: Wesley Troyer, DO
Editor: Laura Mattson, DO

Clinical Vignette: A 46-year-old female presented for a medial-sided left knee injury that occurred 5 days prior in Muay Thai training. Her opponent struck her knee on the lateral side causing a valgus force to the knee. Exam demonstrated mild swelling and tenderness to palpation at the medial femoral epicondyle and 1-2+ laxity with valgus stress test.

Type of Probe Used: 15-6 MHz Linear Transducer



Unalebeled long axis view of the proximal MCL at medial femoral condyle.


Labeled Long Axis View of the Proximal MCL with an anechoic defect in the inferior portion of the superficial fibers of the MCL at the femoral attachment that measures approximately 2.4 mm long x 2.3 mm thick x 3.1 mm wide. There is abnormal hypoechogenicity and thickening of the proximal MCL which measures approximately 6.5 mm.


Unlabeled short axis view of proximal MCL at medial femoral condyle.


Labeled Short Axis View of the Proximal MCL with hypoechoic defect visualized in short axis appreciating the anterior to posterior extent with surrounding edema.

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