Ottawa Knee Rules: Difference between revisions
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=Purpose= | = Purpose = | ||
A clinic decision rule to help determine need for x-rays or rule out fractures of the knee after acute injury | |||
=Criteria= | = Criteria = | ||
1. Age>55 years | 1. Age>55 years | ||
2. Islolated patellar tenderness without other bone tenderness | 2. Islolated patellar tenderness without other bone tenderness | ||
3. Tenderness of the fibular head | 3. Tenderness of the fibular head | ||
4. Inability to flex to 90° | 4. Inability to flex to 90° | ||
5. Inability to bear weight immediately after injury and in the emergency department (4 steps) regardless of limping. | 5. Inability to bear weight immediately after injury and in the emergency department (4 steps) regardless of limping. | ||
=Research= | = Research = | ||
==Diagnostic Accuracy== | === Diagnostic Accuracy === | ||
Adult Population: Sensitivity: 1.0 Specificity: .49-.56 | Adult Population: Sensitivity: 1.0 Specificity: .49-.56 | ||
+LR: 1.9-2.3 -LR: 0 | +LR: 1.9-2.3 -LR: 0 | ||
Pediatric Population: Sensitivity: 1.0 Specificity: .43 | A systematic review by Buchmann et al found a negative result on the Ottawa knee rule test is associated with a fracture<br>probability of less than 1.5% in an adult population. | ||
Pediatric Population: Sensitivity: 1.0 Specificity: .43 | |||
+LR: 1.8 -LR: 0 | +LR: 1.8 -LR: 0 | ||
Revision as of 03:22, 9 December 2009
Purpose[edit | edit source]
A clinic decision rule to help determine need for x-rays or rule out fractures of the knee after acute injury
Criteria[edit | edit source]
1. Age>55 years
2. Islolated patellar tenderness without other bone tenderness
3. Tenderness of the fibular head
4. Inability to flex to 90°
5. Inability to bear weight immediately after injury and in the emergency department (4 steps) regardless of limping.
Research[edit | edit source]
Diagnostic Accuracy[edit | edit source]
Adult Population: Sensitivity: 1.0 Specificity: .49-.56
+LR: 1.9-2.3 -LR: 0
A systematic review by Buchmann et al found a negative result on the Ottawa knee rule test is associated with a fracture
probability of less than 1.5% in an adult population.
Pediatric Population: Sensitivity: 1.0 Specificity: .43
+LR: 1.8 -LR: 0
