Kernig's sign

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The Kernig maneuver is performed lying on your back. We raise the lower limb flexed at the knee up to 90° flexion at the hip. Then we extend the knee.

The phenomenon is positive if we cannot perform knee extension due to pain or stiff resistance. The phenomenon is positive for irritation of the meningeal membranes, for example in meningitis or subarachnoid hemorrhages (where the symptoms appear after six hours).

Kernigův příznak (Centrum elektronického vzdělávání 1.LF UK)

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