Focal Herniation of Tibialis Anterior Muscle Diagnosed on Dynamic High-Resolution Ultrasonography Using Provocative Manoeuvres

Focal protrusion of the muscle through an acquired or congenital myofascial defect is termed focal muscle herniation, and overall, tibialis anterior is the most commonly affected muscle. Tibialis anterior muscle typically herniates on attaining “fencer’s lunge” position. We report the case and describe the high-resolution ultrasonography appearances of focal tibialis anterior muscle herniation diagnosed using provocative manoeuvres in a 32-year-old female.