Apr 19, 2011 - 5:52 pm
****Just Googled It******
I had this happen recently during my annual physical...thought it was strange that my knee reflexes no longer responded to the MD's rubber hammer tap...
He told me it was a symptom from the malfunctioning Thyroid...go figure. I would never thought it could effect something like that, weird huh...
"Absent Knee Jerk Reflexes. Tapping the tendon of the hanging leg just below the knee cap should cause the leg to kick forward slightly. This happens because the tap slightly stretches the thigh muscles, which respond automatically with a quick contraction. This response is called the knee jerk reflex and is usually present under all circumstances. Absence of the knee jerk reflex frequently indicates diseases such as pernicious anemia, thyroid disease, or disease of the spinal cord or brain itself. Only on rare occasions are knee jerks absolutely absent in healthy individuals."