The Serratus Anterior: The Unsung Hero of Shoulder Strength and Stability
When it comes to shoulder health, most people immediately think about the rotator cuff, traps, or deltoids. But there's another muscle that plays a HUGE role in how your shoulder moves, stabilizes, and performs: the serratus anterior.
Often overlooked, the serratus anterior is one of the key players in shoulder blade (scapular) mechanics. Whether you're reaching overhead, lifting weights, doing push-ups, or throwing a ball, this muscle helps create the stability and control your shoulder needs to move efficiently.
At FIXXED, we look beyond the site of pain to understand how the entire body works together. And when it comes to shoulder discomfort, the serratus anterior is one muscle we don't want to overlook.
What Is the Serratus Anterior?
The serratus anterior is a fan-shaped muscle that runs along the side of your rib cage, attaching to the underside of your shoulder blade.
Its primary job is to help control the movement and positioning of the scapula against the rib cage. More specifically, it contributes to:
Scapular protraction: Moving the shoulder blade forward and around the rib cage.
Upward rotation: Rotating the shoulder blade upward as you raise your arm overhead.
Posterior tilt: Helping the shoulder blade move into an optimal position during overhead movement.
Scapular stability: Keeping the shoulder blade controlled against the rib cage.
In simple terms, the serratus anterior helps your shoulder blade move the way it's supposed to so your arm can move efficiently.
Why Does the Serratus Anterior Matter?
Your shoulder blade is the foundation for many of the movements your arm performs. If your scapula isn't moving or stabilizing properly, it can affect how your shoulder handles load.
The serratus anterior is especially important for overhead activities. Think about pressing a barbell overhead, swimming, reaching into a cabinet, or performing a pull-up. Your shoulder blade needs to rotate upward and move smoothly along your rib cage to allow your arm to reach overhead.
When the serratus anterior isn't contributing effectively, other muscles may compensate, potentially contributing to altered movement mechanics, reduced shoulder control, and discomfort.
This doesn't mean a weak serratus anterior is automatically the cause of shoulder pain. Shoulder function is influenced by multiple muscles, joints, and movement patterns. But improving serratus strength and coordination can be an important piece of a comprehensive shoulder rehabilitation program.
Signs Your Serratus Anterior May Need Some Attention
The serratus anterior doesn't always get the attention it deserves, but there are a few movement patterns that may indicate you need to work on scapular control and strength.
These can include:
Difficulty controlling your shoulder blades during push-ups or planks.
Shoulder blade winging, where the inside border of the shoulder blade becomes more prominent.
Difficulty maintaining control during overhead movements.
Compensating with excessive upper trap activity during pressing or reaching.
Decreased shoulder stability during upper-body strength training.
Keep in mind that these signs aren't a diagnosis. A movement assessment can help determine whether serratus function is contributing to your symptoms.
4 Exercises to Strengthen Your Serratus Anterior
The good news? You don't need complicated equipment or an extensive exercise routine to start improving serratus anterior strength and control.
Here are four exercises we love to incorporate into shoulder stability and strengthening programs.
1. Serratus Wall Slides
Place your forearms against a wall with your elbows bent. Apply gentle pressure into the wall and slowly slide your arms upward while allowing your shoulder blades to rotate around your rib cage. Avoid shrugging your shoulders toward your ears.
2. Push-Up Plus
Start in a push-up position, either on your knees or toes. Keep your elbows straight and allow your chest to gently sink between your shoulder blades. Then actively push the floor away, spreading your shoulder blades apart. That extra push at the top is where the serratus anterior really comes into play.
3. Bear Plank Shoulder Protraction
Start on your hands and knees with your knees hovering just off the floor. Keep your elbows straight and actively push the ground away, allowing your shoulder blades to spread across your rib cage. Maintain a stable trunk while holding the position.
4. Supine Serratus Punches
Lie on your back with your arm extended toward the ceiling, holding a light dumbbell. Without bending your elbow, reach your hand toward the ceiling by lifting your shoulder blade slightly off the floor. Slowly lower back down and repeat.
Stronger Shoulders Start With Better Movement
Shoulder health isn't just about having strong arms or a healthy rotator cuff. It's about having the strength, mobility, and coordination to allow all the surrounding muscles and joints to work together.
The serratus anterior plays a major role in that equation. Whether your goal is to get back to lifting overhead, improve your push-up mechanics, return to your favorite sport, or simply move without shoulder discomfort, improving scapular control can make a meaningful difference.
At FIXXED, we take an individualized approach to shoulder pain and performance. Our clinicians assess how your shoulder, shoulder blade, thoracic spine, and surrounding musculature work together to identify what's limiting your movement and build a plan to get you stronger.
Don't just work around shoulder pain. Let's get to the root of it.
Ready to move better and build stronger shoulders? Reach out to FIXXED to schedule an appointment or book a free phone consultation.
