Researchers from Carnegie Mellon University have developed a cutting-edge method to identify muscle activity in densely packed regions like the forearm ... and ultrasound imaging, this approach ...

Your forearm consists of two bones that come together to join at the wrist, called the ulna and radius. Injuries to these bones or to nearby nerves, muscles, or joints can lead to forearm pain.

When worn on the forearm, this wearable ultrasound device can accurately monitor muscle motion in the hands and wrists. The device can be used to control a robotic arm and play a virtual game.