This is a 10-year consensus update to the original Disabled Throwing Shoulder series. It synthesizes evidence across five domains: kinetic chain, scapula, glenohumeral rotation deficits, labral and cuff injuries, and rehabilitation. The goal is to refine assessment thresholds and treatment guidelines for the overhead thrower.
When you evaluate a thrower with shoulder pain, measure both arms in the same position and compare. GIRD >18° or TROMD >5° flags the shoulder at risk, but a 10-12° GIR asymmetry alone is normal adaptive retrotorsion if total motion is symmetric.
The central teaching point is adaptive pathology. Many SLAP tears and articular-side partial cuff tears seen on MRI in asymptomatic throwers are remodeling that enables the extremes of external rotation for high-velocity throwing. This reframes the treatment algorithm. Rehabilitation first, targeting GIRD, TROMD, scapular dyskinesis, and kinetic chain deficits, resolves about half of SLAP lesions.
Surgery is career-salvaging, not restorative. The steep drop in return to play with combined SLAP and cuff repair (45%) and full-thickness cuff repair to bone in pitchers (8%) shows that restoring "normal" anatomy can end a throwing career.
This is a 10-year consensus update to the original Disabled Throwing Shoulder series. It synthesizes evidence across five domains: kinetic chain, scapula, glenohumeral rotation deficits, labral and cuff injuries, and rehabilitation. The goal is to refine assessment thresholds and treatment guidelines for the overhead thrower.
When you evaluate a thrower with shoulder pain, measure both arms in the same position and compare. GIRD >18° or TROMD >5° flags the shoulder at risk, but a 10-12° GIR asymmetry alone is normal adaptive retrotorsion if total motion is symmetric.
The central teaching point is adaptive pathology. Many SLAP tears and articular-side partial cuff tears seen on MRI in asymptomatic throwers are remodeling that enables the extremes of external rotation for high-velocity throwing. This reframes the treatment algorithm. Rehabilitation first, targeting GIRD, TROMD, scapular dyskinesis, and kinetic chain deficits, resolves about half of SLAP lesions.
Surgery is career-salvaging, not restorative. The steep drop in return to play with combined SLAP and cuff repair (45%) and full-thickness cuff repair to bone in pitchers (8%) shows that restoring "normal" anatomy can end a throwing career.