Kneecap

... Maybe you changed the way you sleep? I once woke up with a numb knee. Stayed that way for 2 weeks until an enormous bruise came up under the kneecap. Very odd, and I still have no idea how I did it. Could also be emotional (believe it or not), everything ok in the old cog-factory lately? ...

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... is the escape reflex (e.g., the sudden withdrawal of a hand in response to a pain stimulus), or the patellar reflex (the jerking of a leg when the kneecap is tapped). Sensory cells (receptors) in the stimulated body part send signals to the spinal cord along a sensory nerve cell. Within the spine ...

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