Often described by anatomists as a "muscle with a split personality," the adductor magnus is one of the largest and most complex muscles in the human body. It is a primary mover for hip adduction, a powerful synergist for hip extension, and a critical stabilizer for walking, running, and squatting. If you have ever suffered from groin pain, struggled to widen your squat stance, or felt tightness deep inside your thigh, your adductor magnus is likely the culprit.
Due to its role in forming the adductor canal (together with vastus medialis and sartorius), hypertrophy or spasm of the adductor magnus can compress the femoral artery or saphenous nerve, leading to claudication-like symptoms or medial knee numbness. adductor magnus muscle