Updates on Radial Head Arthroplasty in Trauma.

The radial head plays a crucial role in maintaining normal elbow kinematics, and radial head arthroplasty (RHA) can help restore normal elbow kinematics after radial head fracture. Most modern implants are made of polished metal alloy with stems that may be smooth, press-fit, or cemented. There is no consensus as to the superiority of smooth versus press-fit stems, and both can result in good clinical outcomes. Cemented stems are no longer indicated in routine RHA. Correct implant positioning is critical, and numerous methods of assessment have been described.