Severe right upper chest pain · tender right sternoclavicular joint · Dx?

A 16-year-old hockey player presented to our emergency department with sharp pain in his right upper chest after "checking" another player during a game. The pain did not resolve with rest and was worse with movement and breathing. The patient did not have dysphagia, dyspnea, paresthesias, or hoarseness. The physical examination revealed tenderness over the right sternoclavicular joint (SCJ) without swelling or deformity. A distal neurovascular exam was intact, and a chest x-ray showed no evidence of dislocation or fracture. The patient's pain was refractory to multiple intravenous (IV) pain medications.