I am unable to fully extend arm, sometimes elbow pain too. please help?

See md: From your history pain and the inability to fully extend your elbow for a period of time suggests bone spurs in the back of the elbow and/ or loose bodies( olecranon fossa). This is esp. Common in pitchers and other overhead athletes(in college and professional pitchers it is termed valgus extension overload-veos).If it is transient and u are not a ' thrower' u may have synovitis... Seeors.