08/20/2026
Posterior Shoulder Pain? Itâs Probably Your External Rotators. Hereâs How to Fix It.
Pain in the back of your shoulder is one of the most misunderstood symptoms we treat. Itâs often not a âshoulder problemâ â itâs a weakness and length issue in the muscles that control shoulder external rotation (your infraspinatus, teres minor, and posterior deltoid).
When these muscles are underworked and tight, your shoulder blade compensates, your rotator cuff overworks, and you end up with that dull ache behind the shoulder blade â especially after a day at a desk or overhead activity.
Here are 3 exercises we prescribe to lengthen and strengthen your external rotators and relieve posterior shoulder pain:
1ď¸âŁ Arm Supported Shoulder ER â Eccentric Focus
Control the lowering phase for 3 seconds. This builds strength through the full range, not just at the top.
2ď¸âŁ Hand on Bench Row
Targets scapular retraction to support the external rotators and improve posture-related shoulder mechanics.
3ď¸âŁ W Rows
Combines external rotation with scapular control â a favorite for restoring pain-free overhead movement.
đ Dosing: 2-3 sets of 10-12 reps, performed 3-4x per week.
If youâve been dealing with posterior shoulder pain that isnât improving with rest, it may be time for a proper movement assessment.
Weâre an out-of-network physical therapy clinic in Burlington, MA, helping people in Burlington, Woburn, Lexington, Bedford, and the surrounding Boston area get lasting relief â without being limited by insurance restrictions.
đ Burlington, MA | Out-of-Network Physical Therapy
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