I have a real bad problem with shoulder pain after I run long runs.
My left shoulder gets a real sharp pain beneath the bottom of my neck
(it feels like its separated???). Following the last two marathons that
I have run, my shoulder gets a stinging pain that lasts for more than a
week. I have tried stretching my arms as I run, but it doesn't help
much. I'm baffled by this upper body injury from a seemingly lower body
Steve, you are not as specific as you might have been in describing the location of the pain. That said, it sounds like you have a cervical nerve root impingement that is mediated by your running posture. The cervical facets live near the sensory nerve roots, and a forward head posture could irritate them. Another explanation is possibly a peripheral entrapment of a particular nerve (Dorsal Scapula), also due to a forward head posture. Either way, consider your head position as you run, especially as you get tired. Try to keep your head over your shoulders, not allowing your chin to protrude too far out in front. Hopefully this helps.