How Low Back Pain Can Lead to Shoulder Pain (And What to Do About It)

Low back pain and shoulder pain are often treated as completely separate problems. One is “down low,” the other is “up top.” But the body does not function in isolated parts—it works as an integrated system. When one region isn’t moving or stabilizing well—especially the low back—it can create compensations that eventually show up in the shoulders.

Every time you reach, lift, push, or pull, your shoulder does not work alone. Your trunk—including your low back, abdominal muscles, and rib cage—provides the stable base that allows your shoulder blade and arm to move efficiently. If the low back is stiff, painful, or weak, the body naturally redistributes motion and load elsewhere. Frequently, that extra demand shifts into the mid-back, neck, and shoulders.

When someone has low back pain, subtle posture changes often occur without conscious awareness. You may lean slightly to one side, limit trunk rotation, brace excessively through your abdominals, or avoid certain movements. Over time, these changes can decrease rib cage mobility and alter shoulder blade positioning. Since the shoulder blade serves as the foundation for shoulder movement, even small alignment changes can increase strain on the rotator cuff and surrounding tissues.

Core function is another major factor. The “core” is not just your visible abdominal muscles—it includes deep spinal stabilizers, the diaphragm, pelvic floor, and hip musculature. These muscles work together to create dynamic stability for the spine. If that system is underperforming due to low back pain, your body may rely more heavily on the neck and shoulder muscles to create stability during everyday tasks. That overuse often leads to tightness, fatigue, and eventually pain in the shoulder region.

Movement patterns also matter. Daily activities—carrying groceries, reaching overhead, loading a dishwasher—require coordinated contribution from the hips, spine, and shoulders. If the hips and lumbar spine are not contributing appropriately, the shoulders compensate. Over time, this imbalance can irritate tendons, reduce mobility, and create persistent shoulder symptoms that seem unrelated to the back.

The key takeaway is that shoulder pain is not always a shoulder problem. Sometimes it reflects poor force transfer, limited spinal mobility, or weakness in the trunk. Treating only the shoulder may offer temporary relief, but if the underlying movement dysfunction remains, symptoms often return.

Below are two simple exercises that address this connection by improving trunk mobility and core stability while supporting shoulder mechanics.

The first exercise is the Open Book stretch for thoracic rotation. Lie on your side with your hips and knees bent to about 90 degrees. Stack your arms straight out in front of you. Keeping your knees together and stable, slowly rotate your top arm and upper body backward, opening your chest toward the ceiling. Allow your head and eyes to follow your hand. Move only as far as you can without forcing it. Hold for a few seconds, then return to the start. Perform 8–10 repetitions on each side. This exercise improves mid-back mobility, which reduces strain on both the low back and shoulders during reaching tasks.

The second exercise is the Dead Bug for core stability. Lie on your back with your hips and knees bent to 90 degrees and your arms reaching toward the ceiling. Gently engage your abdominals as if bracing for a cough, keeping your low back neutral (not pressed flat, not arched). Slowly extend one leg forward while lowering the opposite arm overhead. Only move as far as you can while maintaining trunk control. Return to center and alternate sides. Perform 6–8 controlled repetitions per side. This reinforces coordinated trunk stability, which helps offload the shoulders during functional movements.

These exercises are a starting point—not a one-size-fits-all solution. If you are experiencing ongoing low back and shoulder pain, a comprehensive evaluation by a physical or occupational therapist is the most effective first step. A therapist will assess how your spine, ribs, hips, and shoulders move together and design a personalized program based on your specific deficits. Addressing the root cause early can prevent compensation patterns from becoming chronic and reduce the likelihood of needing injections, imaging, or more invasive interventions.

When the body moves efficiently as a connected system, both the low back and shoulders function with less strain—and pain often resolves as a result.