Purpose: The Pittsburgh Knee Rules were developed in order to determine the need for radiographs after acute knee injury secondary to the risk of fracture.

Stage of CPR Development: Validated.


Blunt trauma or a fall as mechanism of injury PLUS either of the following:
1. Age older than 50 years or Younger than 12 years
2. Inability to walk 4 weight-bearing steps in the emergency department


Study Sensitivity Specificity NPV
Seaburg et al., 1994 1.00 0.79 100%
Bauer et al., 1995 1.00 N/A 100%
Seaburg et al., 1998 0.99 0.60 N/A
Simon et al., 2005 0.77 0.57-0.58 N/A
Cheung et al., 2013 0.86 0.51 98%

Continued Learning…

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Continued Reading…


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