Foot Drop Causes. Generally speaking, the causes of foot drop are weakness or paralysis of the muscles needed to lift the foot. More specifically, the condition is most often caused by compression of the peroneal nerve that controls the anterior tibialis, or the muscles that lift the foot.
Measurement Definition. In science, a measurement is collection of quantitative or numerical data that describes a property of an object or event. A measurement is made by comparing a quantity with a standard unit.
Unit of measurement is a definite magnitude of a physical quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same physical quantity. Different systems of units used to be very common.