An above-knee prosthesis with a carbon fiber socket, pneumatic knee joint, and single-axis foot combines strength, lightweight design, and controlled movement for amputees. Carbon Fiber Socket: Lightweight, durable, and custom-molded for comfort, it offers excellent support and energy return while reducing skin irritation. Pneumatic Knee Joint: Uses air pressure to control flexion and extension, providing smoother walking, better control, and stability, especially on varied terrains. Single-Axis Foot: Simple design with up-and-down movement, offering stability for basic walking, though less adaptable to uneven surfaces compared to multi-axis feet. Also known as • Carbon fiber prosthetic socket • Pneumatic knee mechanism • Single-axis prosthetic foot • Lightweight above-knee prosthesis • Carbon fiber socket prosthesis • Pneumatic knee joint prosthetic • Basic knee prosthesis with pneumatic control • Energy-efficient above-knee prosthesis • Durable prosthetic with pneumatic knee • Above-knee prosthesis with dynamic knee control • Carbon composite socket for above-knee prosthesis • Single-axis foot for above-knee prosthesis • Adaptive pneumatic knee joint • Custom-fit carbon fiber prosthesis