Why do my shoulder blades burn with a dull ache when I sit without back support?
1. Introduction A burning, dull ache between the shoulder blades when sitting without back support is primarily caused by ischemic fatigue and lactic acid accumulation in the rhomboid and middle trapezius muscles. Without external structural support, these postural muscles must remain in a state of continuous isometric contraction to keep the spine upright, leading to … Read more