The evolution of lower limb prosthetics over the last decade has been marked by a fundamental shift from static, energy-storing designs to active cybernetic systems. Products from the Icelandic company Össur hold an avant-garde position due to the implementation of microprocessor control (MPK) and artificial intelligence, capable of predictive analysis of gait phases in real-time. However, clinical experience proves that the technological perfection of a device does not inherently guarantee functional recovery.