Arm Prostheses segmentation by type classifies devices according to the control mechanism and mechanical architecture, providing a second layer of market taxonomy. The Body‑powered prostheses, which rely on cable‑driven actuation linked to shoulder or chest movement, hold roughly 40 % of the type‑based market due to their robustness, low maintenance, and cost‑effectiveness for users with limited access to advanced technology. The Myoelectric systems, employing surface electromyography sensors to translate residual muscle signals into motor commands, capture about 45 % of the market; their superior dexterity and multi‑degree‑of‑freedom articulation command premium pricing, reinforcing their revenue weight. Hybrid solutions combine body‑powered and myoelectric elements to balance functionality and affordability, contributing an estimated 10 % share. Finally, the Passive or cosmetic‑only devices, lacking active actuation, occupy the remaining 5 % and serve users prioritizing aesthetics over function. Together, these type categories delineate the structural composition of the Arm Prostheses market and influence investment focus across the value chain.