In medicine, the<unk>  are a set of guidelines for doctors to aid them in deciding if a patient with foot or<unk>  pain should be offered X-rays to diagnose a possible bone fracture. Before the introduction of the<unk>  most patients with<unk>  injuries would have been X-rayed. However only about 15% of X-rays were positive for fracture, other patients had sprains or other injuries. As a result many unnecessary X-rays were taken, which was costly, time consuming and a possible health risk.
Ottawa ankle rules
Radial catheterization allen's test
Rogers score
Anderson-Darling test
Manchester score
Lincoln sign
Football sign
Posterior drawer test