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1. in meningitis, bending the patient's neck usually produces flexion of the knee and hip.
2. in meningitis, passive flexion of the lower limb on one side causes a similar movement in the opposite limb.
Etymology: Josef Brudzinski, Polish physician, 1874-1917
an involuntary flexion of the hip and knee when the neck is passively flexed. It can occur in patients with meningitis. Compare Kernig's sign.