Why does my shoulder only hurt when I lift my arm to the side or overhead?

This often happens because lifting your arm overhead naturally narrows the space within the shoulder joint where your rotator cuff tendons pass. If there's any inflammation, weakness, or improper movement of your shoulder blade, these tendons can get pinched, causing pain only in that overhead position.

Is it okay to exercise with shoulder impingement?

It depends. You should avoid any movements that cause a sharp or pinching pain, especially overhead pressing or heavy lifting. However, gentle, pain-free mobility exercises and specific strengthening exercises prescribed by a professional can be very beneficial for recovery.

How can I improve my overhead mobility for good?

Lasting improvement comes from a combination of three things: 1) Improving the mobility of your mid-back (thoracic spine), 2) Strengthening the muscles that control your shoulder blade, and 3) Strengthening the rotator cuff muscles themselves. A kinesiologist can help you identify which of these areas needs the most focus.

When should I see a kinesiologist for shoulder pain?

You should see a kinesiologist if the pain persists for more than a week, wakes you from sleep, is accompanied by significant weakness, or doesn't improve with gentle home care. A professional can provide an accurate assessment and a personalized recovery plan to address the root cause.

That Pinch in Your Shoulder When You Reach Up? Here’s What It Could Mean.

You reach up to put a heavy pan on the top shelf of your kitchen cabinet, and there it is again—a sharp, pinching sensation deep inside your shoulder. You wince, lower your arm, and try again from a different angle, but the pinch is stubborn. It’s not just with heavy pans; it happens when you’re hanging curtains, reaching for a book, or even just putting on a jacket. That specific pain, the one that only shows up when you lift your arm overhead, is a common complaint we see at our Richmond clinic, and it’s often a sign that the mechanics of your shoulder aren’t working in harmony.

Why Does My Shoulder Pinch When I Reach Up?

When your arm moves overhead, it’s not just one joint doing all the work. It’s a beautifully coordinated dance between your collarbone, your shoulder blade (scapula), your upper arm bone (humerus), and your mid-back (thoracic spine). When one of these dancers is out of step, the shoulder joint itself often takes the blame and the pain. Here are the three most common culprits we see.

💡 Insider Tip

Before reaching overhead, consciously pull your shoulder blades down and back, away from your ears. This simple reset creates more space in the joint and can immediately reduce pinching.

1. The Overworked Rotator Cuff

Think of your rotator cuff as a small team of four muscles with a very important job: keeping the “ball” of your upper arm bone centred in the shallow “socket” of your shoulder blade. When you lift your arm, these muscles work constantly to stabilize the joint. However, if they are weak or fatigued, or if the space they live in is too crowded, they can get pinched between the bones. This is called impingement. It’s that classic sharp pain you feel, as if something is getting caught inside the joint.

2. The Wandering Shoulder Blade (Scapular Control)

Your shoulder blade is the foundation for your arm’s movement. For you to reach overhead smoothly, your scapula needs to glide and rotate upward and outward on your ribcage. This movement is crucial because it repositions the entire shoulder socket, creating more space for the rotator cuff tendons to pass through without getting pinched. Many of us, due to prolonged sitting and desk work, develop habits where our shoulder blades don’t move correctly. They might be stuck, tilted forward, or move erratically. When this foundation is unstable, the shoulder joint has to work overtime in a compromised position, leading directly to that pinching sensation.

3. The Stiff Mid-Back (Thoracic Mobility)

This is the cause that surprises most people. To get your arm fully overhead, your mid-back needs to extend slightly. Try this: slouch forward as much as you can and try to lift your arms straight up. You won’t get very far. Now, sit up tall, lift your chest, and try again. See how much higher your arms go? If your thoracic spine is stiff and stuck in a slightly rounded position (a common result of modern life), your body has to find that missing range of motion somewhere else. It will often force the shoulder joint to move beyond its comfortable range, leading to impingement, strain, and that familiar pinch.

What You Can Try at Home (Safely)

If the pain is mild and new, there are a few gentle movements you can try to address these common causes. The key is to work in a pain-free range. If any of these increase your pain, stop immediately.

Thoracic Extension over a Towel: Roll up a bath towel and place it on the floor. Lie on your back with the towel positioned horizontally across your mid-back, just below your shoulder blades. With your knees bent and feet flat on the floor, gently clasp your hands behind your head and let your head and shoulders arch back over the towel. Hold for 30-60 seconds, breathing deeply.
Wall Slides: Stand with your back against a wall, with your feet about a foot away from it. Place your forearms on the wall in a “goalpost” position, with your elbows and wrists touching the wall. Slowly slide your arms up the wall, trying to keep your elbows, wrists, and the back of your hands in contact with the wall. Only go as high as you can without pain or your lower back arching excessively. This helps retrain your shoulder blades to move correctly.
Doorway Stretch: Stand in a doorway and place your forearms on the frame, with your elbows slightly below shoulder height. Gently step one foot forward until you feel a light stretch across your chest. Hold for 30 seconds. This helps open up the tight chest muscles that can pull your shoulders forward.

When DIY Isn’t Enough

While these exercises can provide relief for minor issues, certain signs indicate a more significant problem that needs a professional eye. Be on the lookout for:

Pain that persists for more than a week or two despite rest and gentle mobility work.
Pain that is sharp, severe, or wakes you up at night.
A noticeable feeling of weakness when trying to lift objects.
A clicking, catching, or locking sensation in the shoulder with movement.
Pain that radiates down your arm.

These symptoms suggest that the impingement might be more severe or that there could be an underlying rotator cuff tear or other issue that self-treatment won’t resolve.

When to Call a Professional

Guessing which part of the chain is broken—the rotator cuff, the scapula, or the thoracic spine—can be difficult. This is where a kinesiologist can make all the difference. We don’t just the site of the pain; we perform a thorough assessment to find the root cause. By analyzing how you move, we can pinpoint the specific weakness or stiffness that’s leading to the problem. From there, we can build a targeted exercise program that addresses *your* unique pattern. Our goal isn’t just to stop the pain, but to restore proper function and give you the tools to prevent it from coming back. You can learn more about our approach on our services page.

Building a Resilient Shoulder for the Long Haul

Once you’re out of pain, the work shifts to prevention. Incorporating a few simple habits can keep your shoulders healthy:

Warm-up properly: Before gardening, playing sports, or lifting heavy items, do some dynamic arm circles and wall slides to prepare the joints.
Strengthen your back: Exercises like rows and face pulls strengthen the muscles that support your shoulder blades, creating a more stable base.
Be mindful of posture: Take frequent breaks from your desk to stand up, stretch, and reset your posture.

That pinch in your shoulder is a signal from your body that something is amiss. By understanding the potential causes and listening to those signals, you can take the right steps toward moving freely and without pain. If you’re struggling to figure it out on your own, please don’t hesitate to reach out. The team at Overdrive Wellness is here to help you get back to reaching for that top shelf, pain-free.