Tendon the Achilles tendon stretches as the ankle joint dorsiflexes. During the last portion of the stride, as the foot plantar-flexes (pointing the toes down), the stored elastic energy is released. Furthermore, because the tendon stretches, the muscle is able to function with less or even no change in length, allowing the muscle to generate greater force. The mechanical properties of the tendon are dependent on the collagen fiber diameter and orientation. The collagen fibrils are parallel to each other and closely packed, but show a wave-like appearance due to planar undulations, or crimps, on a scale of several micrometers. In
Tendon-driven robot larger than Roboy and includes 160 pulley-like muscles and aluminum bones that allow it to perform simple bends and poses. Bionic Robotics offered BioRob, a tendon-driven robotic arm for industrial use. It has a flexible mechanical structure that allows it to pick up heavy payloads even though it weighs much less than the conventional robotic arm that the company also makes. BioRob’s light weight and flexible design is claimed to offer greater safety for use around human workers. Caliper is a framework for the simulation of tendon-driven robots. It consists of a generic physics simulator capable of utilizing computer-aided design