Elbow drifts forward — no longer beside the ear
The overhead long-head position is lost; elbow must stay fixed.
Overactive muscles
Latissimus dorsiTeres major
Corrective work
Foam RollLats↗StretchLat stretch (kneeling overhead)↗The overhead long-head position is lost; elbow must stay fixed.
QL and lateral trunk compensate for the overhead demand.