Can poor posture cause a sharp pain under the left shoulder blade?
1. Introduction Chronic poor posture frequently causes a sharp, localized pain under the left shoulder blade. Slouching, hunching over a desk, or maintaining a forward head carriage places excessive, continuous mechanical strain on the periscapular muscles and the cervical spine. This relentless biomechanical overload forces specific muscle groups to act as structural tension wires, rapidly … Read more