This paper proposes the design of the prosthetic arm by reconstructing the structure and proportions of an amputated arm using high precision methods and dimensions. To achieve this, CT images of the patient’s amputated and non-amputated arm are collected from the Rehabilitation centre. The patient CT data were imported to a 3D modelling software i.e., Mimics Innovation Suite version 22.0 Materialise 3-Matic version 14.0 original licensed software. The exported file is given to the Computer-Aided Design software, the geometry of the socket and the prosthetic arm were designed according to the mirrored geometry of the non-affected arm. 3D rendering for various degrees of movement has been carried out for animation.