@drcharlie_dc: That stubborn pain deep beneath your shoulder blade may involve more than just your rhomboids or trapezius. The serratus posterior superior is a commonly overlooked upper-back muscle with a traditionally described referral pattern extending into the shoulder and arm. Watch how I use a muscle hook to gently address tenderness in this region while improving upper-back mobility. #TriggerPointRelease #ShoulderBladePain #MuscleRecovery #musclehook