Photos: Amputee-athlete gets his C-Legs

Clapp also uses a prosthetic arm. For both his arm and his legs, he has a variety of systems for different endeavors such as running and swimming.

Close-up of a portion of the C-Leg. Sensors capture data 50 times a second to assess the wearer's gait.

Peter Eberle shows off his "dynamic arm," which has a power-assisted elbow. At the other end of the arm is his prosthetist, David Wilson-Brown of Caulfield General Medical Centre, in Victoria, Australia.

A "transcarpal hand"--two fingers, a thumb and a motor. The myoelectric device is designed for amputees with very long residual limbs.