It helps keep the foot at a 90-degree angle to the lower leg to support it ... by damage or injury to the common peroneal nerves in both legs, which can occur during certain surgical procedures.

Lower back pinched nerves can cause pain, numbness, tingling, and weakness that travels from the low back down the legs.

An international team of researchers reports the first known artificial nerve that can detect pressure—and even move the detached leg of a cockroach after the device was attached to the tissue. The ...