The triceps muscle links to the tip of the baby finger along the small intestine meridian. When these points were injected with local anaesthetic, the pain in the wider area could be made to disappear. The muscles are the active organs of locomotion. They are formed of bundles of reddish fibres, consisting of fibrine, and endowed with the property of contractility. It is the aponeurotic or deep fascia which form sheaths for the muscles, tendons and connective tissues.
Every muscle has a potential ' trigger point '.
When this trigger point flares up, goes into spasm and becomes painful often that one trigger point radiates its pain to another muscle. It triggers off pain from the source point to the satellite point . It is necessary to distinguish between ' myofascial pain ' and 'nerve root pain'. The irritation of a nerve and thus nerve root pain, even if in the same distribution, is not to be confused with myofascial pain. Myofascial pain is due solely to activation of trigger points and their associated zones of activity.