http://www.w3.org/ns/prov#value | - In some cases, no cause can be found.SymptomsSensation changes in the thigh, knee, or leg, such as decreased sensation, numbness, tingling, burning, a feeling of the knee giving way or buckling, or (uncommonly) painWeakness of the knee or leg, including difficulty going up and down stairs -- especially downSigns and testsThe doctor or nurse will examine you.
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