Presentation
Soccer player with a recent injury. Now right upper thigh pain.
Patient Data
The proximal portion of the right rectus femoris muscle shows edema and partial tear involving the posterolateral aspect of the muscle with the adjacent perifascial fluid.
The proximal portion of the right rectus femoris muscle shows abnormal edema and fluid signal along its posterolateral aspect (red arrow) representing muscle strain, with adjacent perifascial fluid signal (yellow arrows).
Case Discussion
Rectus femoris myofascial muscle injury is a rare type of rectus femoris muscle injury. It usually involves the proximal and the middle thirds of the muscle. It also has a prediction to the posterolateral aspect of the muscle. On MRI, the muscle shows an abnormal edema signal involving its posterolateral aspect, if the overlying fascia of the muscle is intact, the fluid will dissect between the muscle and fascia, while if the overlying fascia is torn, the fluid will dissect along the adjacent fascial planes. This type of injury is common to recur and form seromas if the player has resumed activity before the complete healing of this injury.
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