The Utah Arm 2, or "U2", from Motion Control, Inc. (a subsidiary of Fillauer, Inc., the USA's largest prosthetic products group) represents the most advanced combination of technology and appearance in myoelectric prostheses. The new U2, introduced in January, 1997, was recently entirely re-engineered with electronics that make the arm easier to fit for the prosthetist and easier to use for the wearer.

Utah Arm is widely acknowledged as the most advanced electric elbow system and is known for sensitive, proportional myoelectric control of the elbow, hand and wrist. The new version Utah Arm also features most up-to-date electronics technology for longer life and greater dependability.

The new computer-type connectors and wire harness allow easy and versatile connections for EMG signals, wrist control, ServoPro control, remote power and remote locking and unlocking. The U2 has new prosthetist-friendly labeling and adjustments. It also features a new, more rugged motor and a long-life battery pack and fast charger, which charges batteries in about 2 1/2 hours or less. All improved U2 components are retro-fittable to previously made Utah Arms to allow upgrading for earlier Utah Arm wearers.