Evaluation and treatment of internal impingement of the shoulder in overhead athletes

Table 2 Jobe’s clinical classification of internal impingement[35]

Stage	Presentation/symptoms
I: Early	Shoulder stiffness and need for prolonged warm–up, no pain with ADLs
II: Intermediate	Pain localized to the posterior shoulder in the late cocking phase, no pain with ADLs
III: Advanced	Similar symptoms to Stage II, but refractory to a period of adequate rest and rehabilitation

ADL: Activities of daily living.