“…An undisplaced radial head or neck fracture 15 is usually described as being without sequela. 1,7,20,24,26 However, Broberg and Morrey 2 also included radial head fractures displaced by less than 2 mm as Mason type I, and to our knowledge, no studies exist that selectively evaluated displaced Mason type I fractures of the radial head or neck. This study extends the current knowledge by reporting that displaced Mason type I fractures of the radial head or neck have a predominantly favorable long-term outcome, if treated with mobilization as soon as the pain allows.…”