Association of Head-Neck Rotation With History of Pitching-Related Elbow Pain in Youth Baseball Players.

Background: Prevention of pitching-related elbow pain in youth baseball players is important. Overhead pitching involves a whole-body motion, including head-neck rotation. A limited range of motion of head-neck rotation may cause inefficient pitching motion; however, this association is unclear.

Ultrasonographic prevalence of ulnar nerve displacement at the elbow in young baseball players.

Background: Overhead-throwing athletes are at risk of elbow injury because of valgus stress, leading to unstable ulnar nerves and neuropathy. Studies regarding ulnar nerve damage/displacement have been performed primarily in adults.

Objective: To determine the prevalence and related factors associated with ulnar nerve displacement at the elbow in young baseball players.