Right-handed pitchers have more external rotation, humeral retroversion, shoulder flexion

COLORADO SPRINGS, Colo. — Right-handed pitchers show greater external rotation, humeral retroversion and shoulder flexion in their throwing arms compared with left-handed pitchers, according to a study presented here.
“Right-handed pitchers also demonstrated significant side-to-side torsion differences while left-handed pitchers did not,” Jacob Maier, MD, said at the American Orthopaedic Society for Sports Medicine Annual Meeting.
Maier and colleagues reviewed 160 right-handed and 57 left-handed pitchers from a single Major League Baseball organization from 2013 to 2020. They

COLORADO SPRINGS, Colo. — Right-handed pitchers show greater external rotation, humeral retroversion and shoulder flexion in their throwing arms compared with left-handed pitchers, according to a study presented here.
“Right-handed pitchers also demonstrated significant side-to-side torsion differences while left-handed pitchers did not,” Jacob Maier, MD, said at the American Orthopaedic Society for Sports Medicine Annual Meeting.
Maier and colleagues reviewed 160 right-handed and 57 left-handed pitchers from a single Major League Baseball organization from 2013 to 2020. They