Repeated Muscle Injury as a Presumptive Trigger for Chronic Masticatory Muscle Pain

<table>Plasma extravasation after one and two bouts of eccentric contraction of the masseter muscle. Note the increased plasma extravasation after two bouts of eccentric contraction. Asterisk denotes significant difference from naïve and number sign denotes significant difference from 1 bout.</table>

Pain Research and Treatment

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Figure 3

Figure 3: Repeated Muscle Injury as a Presumptive Trigger for Chronic Masticatory Muscle Pain 