The serratus anterior muscle can give you pain at the side of your chest, beside your shoulder blade or at the inside of your arm.
If trigger points are troubling the serratus anterior, you might experience pain at the side of the ribcage and at the lower and inner side of the shoulder blade.
Furthermore, pain can radiate down the whole inner side of the arm. Also, the inner hand and 4th and 5th finger might be painful – not shown in the pictures below-.
The serratus mainly contributes to…
These are mostly limited to pain or a stitch during breathing.
The reason for this is that your chest expands during respiration, which in turn stretches your serratus anterior with every inhalation.
If it is too tense or contains trigger points this may be painful. You even may feel short of breath.