Adductor — Magnus Muscle ((link))

If the Adductor Magnus is chronically tight, it pulls on the sit bone, which pulls on the sacrotuberous ligament, which torques the sacrum, leading to...

Why? Look at a deep squat. As you descend past parallel, your hamstrings actually slacken because they attach above the knee and below the hip. When the knee bends, the hamstring tension drops. However, the Adductor Magnus doesn't have this problem. adductor magnus muscle

When people talk about leg strength, the conversation almost always starts and ends with the glutes and the quads. Squat depth? “Squeeze your glutes.” Deadlift lockout? “Drive your hips through.” While the glutes certainly deserve their crown as the king of posterior chain power, there is a silent guardian, a watchful protector lurking deep in your inner thigh: The Adductor Magnus. If the Adductor Magnus is chronically tight, it

You’ve probably heard it referred to simply as “the groin,” but that is a gross understatement. The Adductor Magnus is a biological marvel—a muscle with a split personality. Half of it acts like a groin muscle, the other half acts like a hamstring. Ignoring it is not just a missed opportunity for strength; it is a recipe for knee pain, hip tightness, and a weak squat. As you descend past parallel, your hamstrings actually

Because the hamstring part of the AM attaches to the adductor tubercle on the femur (near the knee), it maintains a consistent moment arm (leverage) throughout the squat. When your hamstrings "turn off" in the hole of a squat, the Adductor Magnus is working overtime to extend your hip.

To train the hamstring portion (hip extension), you need hip extension with a wide stance. To train the adductor portion (leg adduction), you need resistance pulling you outward.

In deadlifts and RDLs (Romanian Deadlifts), the hamstring portion of the AM acts as a synergist. If you feel a deep stretch on the inside of your lower thigh during an RDL, that isn't your hamstring—that is your Adductor Magnus begging for attention. The "Mystery Groin Pull" Most athletes fear the "groin pull." But did you know that most proximal (high) groin pulls are actually tears of the rectus abdominis or the pectineus? Distal (low) groin pain near the knee is often the Adductor Magnus.