How can poor shoulder function cause neck pain and headaches?

The upper, outer edge of the scapula (shoulder blade) needs to elevate to approximately the seventh cervical vertebra. Especially when the scapula is depressed to begin with, the chances of reaching your seventh cervical vertebra are much reduced. When the scapula does not elevate properly, increased stress is placed on the muscles attaching the scapula to the neck and head, potentially causing spinal compression or rotation.

This is often at the root of neck pain and/or headaches.

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