Why Your Shoulder Pain Isn't Just A Shoulder Problem

Sports Chiropractic Care · Long Beach, CA

If you've ever dealt with shoulder pain, you know how disruptive it can be. Reaching for a cabinet, putting on a jacket, or even sleeping on your side can suddenly become painful. But here's something most people don't realize: shoulder injuries are rarely just about the shoulder. Understanding how the shoulder actually works, and what else is involved, is the first step toward real, lasting relief.

Dr. Andrew D.C., sports chiropractor in Long Beach, California

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Part 1

The Rotator Cuff (and the Muscles That Support It)

The rotator cuff is a group of four muscles that wrap around the shoulder joint, working together to keep the ball of the humerus (upper arm bone) centered in the socket while allowing for a huge range of motion. These four muscles are essential for shoulder stability, and when they're not functioning well, injuries like impingement, tendinopathy, or tears may follow.

But the rotator cuff doesn't work alone. Several other muscles play a major role in shoulder health, even though they're not technically part of the rotator cuff group:

• The pectoralis major (chest)

• The latissimus dorsi (mid/lower back)

• The teres major (upper back)

• The deltoids (shoulder cap)

These muscles are large, powerful movers of the shoulder, and they need to work in coordination with the rotator cuff, not against it. When there's an imbalance between these bigger, stronger muscles and the smaller stabilizing muscles of the rotator cuff, the shoulder joint can become vulnerable to injury. Healthy shoulders aren't just about strong rotator cuffs; they're about all of these muscles working together.

Part 2

It's Not Just the Shoulder: Understanding Scapulohumeral Rhythm

Here's where things get interesting. The shoulder doesn't move in isolation. It's part of a coordinated system that includes:

• The scapula (shoulder blade)

• The ribcage

• The acromioclavicular joint (where your scapula meets your collarbone)

• The sternoclavicular joint (where your collarbone meets your breastbone)

This coordinated movement pattern is called scapulohumeral rhythm, and it's critical to shoulder health. For your shoulder (the ball-and-socket joint) to move efficiently, these surrounding structures need to move well too. When one of them isn't doing its job, say, the shoulder blade isn't rotating properly, or the ribcage and thoracic spine are stiff, the ball-and-socket joint often ends up compensating. It's forced to take on more motion and more stress than it was designed to handle.

This is why, when assessing a shoulder injury, it's so important to look beyond the shoulder itself. The thoracic spine, ribcage, and scapula all need to be evaluated to get the full picture. Often, the real culprit behind a shoulder injury isn't the shoulder at all. It's a nearby joint that isn't pulling its weight.

Part 3

Progressive Overload: The Missing Piece in Injury Prevention

One of the most common causes of musculoskeletal injury isn't a single dangerous movement. It's doing too much, too soon, without enough preparation.

Lifting heavy weights, dancing, running long distances, none of these activities are inherently dangerous. In fact, the body is remarkably good at adapting to demands placed on it over time. Years of strength training build muscle and resilience. Years of ballet build coordination and mobility. Years of running build endurance and metabolic efficiency.

The problem arises when we ask the body to do something it hasn't been prepared for. Attempting a heavy deadlift with no training, a deep plié, or a half marathon without building up to it puts excessive strain on tissues that simply aren't ready for that demand.

This is where progressive overload comes in as a prevention strategy, not just a performance one. Rather than hoping a good warm-up will protect an already-struggling shoulder (it won't), the smarter approach is often to step back, rebuild the shoulder's capacity gradually, and prepare the tissues over weeks or even months. This kind of preparation is one of the most effective injury-prevention tools available.

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Part 4

Exercises That Support a Healthy, Resilient Shoulder

With all of this in mind, here are two exercises that can help build shoulder stability and endurance. As with any exercise, perform these with caution and awareness of your own body.

1. Prone Scapular Stabilization Series: O-A-Y-I

This exercise is performed lying face down.

• Start in the "O" position: hands behind your lower back, elbows lifted as high as possible. Hold for 4 seconds.

• Lift your hands off your lower back, keeping hands and elbows lifted high. Hold for 4 seconds.

• Move into the "A" position: straighten your elbows, arms out to the sides of your body, reaching as high as possible. Hold for 4 seconds.

• Slowly swing your straight arms overhead into the "I" position, hands positioned as if holding a bowl of soup all the way overhead. Hold for 4 seconds.

• Repeat the sequence through the "Y" position, then finish with the "O" position again, holding each for 4 seconds.

This exercise is about endurance and positioning, not raw strength. Shoulder stabilization isn't only built through strength work; it also requires endurance training. In most cases, the weight of your arms alone provides enough of a challenge with these isometric holds. If you're looking to progress, try holding small weight plates or light dumbbells during the "A," "Y," and "I" positions.

2. Standing Leaning Y's, T's, and A's

This exercise is performed standing, with a slight forward lean to engage the muscles of the upper back.

• Y's: With small dumbbells, hands facing each other and arms straight, raise your arms up and overhead into a "Y" shape. Perform as many reps as possible, stopping a few reps before failure.

• T's: Maintaining the forward lean, turn your hands to face forward and raise your straight arms out to the sides, forming a "T." Perform to near failure.

• A's: With hands facing each other and elbows straight, raise your arms out and behind you, forming an "A." Perform to near failure.

Most people find T's more challenging than A's, and Y's the most challenging of the three. This progression helps target different areas of the upper back and shoulder stabilizers.

Part 5

Understanding the "Why" Behind Your Injury

Perhaps the most important takeaway from all of this: truly understanding your injury matters more than any single exercise or stretch. When you don't understand the "why" behind your pain, treatment becomes guesswork. You might be strengthening muscles that aren't weak, mobilizing the wrong joints, or missing the actual source of your problem entirely.

Real, lasting recovery starts with a clear understanding of what's actually going on and why it happened in the first place.

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Disclaimer: This blog post is intended for educational purposes only and is a recap of information shared at our workshop. It is not a substitute for a professional medical evaluation. If you're experiencing any of the red flag symptoms listed above, seek emergency medical care immediately.