Pittsburgh knee rules

Pittsburgh knee rules

(pits′bŭrg″) A clinical prediction rule used to determine whether an individual requires plain x-rays to rule out a knee fracture after an acute or blunt injury. Predictive variables include a fall or blunt trauma as the mechanism of injury, inability to ambulate initially or in the ER (i.e., the inability to take four steps), or patients younger than 12 or older than 50.