Physical examination maneuver
Physical Exam
Kernig Sign
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With the patient supine, flex one hip and knee to 90°. Maintain the hip in flexion and slowly extend the knee. A positive sign is marked resistance or pain that limits knee extension, classically preventing the knee from extending beyond about 135°.
How to Interpret
Showing all 2 findings
Meningitis
Kernig sign positive
Rule in
Somewhat helpfulNo CI
Rule out
Not helpfulNo CI
Evidence:Moderate
Stroke
Kernig or Brudzinski sign
Rule in
InconclusiveWide CI
Rule out
Not helpful
Evidence:ModerateResearch in progress
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Rule out:NHMeningitis, NHStroke, NHSubarachnoid Hemorrhage
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