Introduction: The transradial level is the most common level of upper-limb amputation seen by the prosthetist. The socket is an intermediate part to wear and fit the prosthetic device with the residual limb firmly. It is the crucial part of the prosthesis influencing the amputee's acceptance considerably. The study introduces a test rig that can assess the socket while simulating arm movements. Methods: The selected socket and test rig designs were drawn by SolidWorks CAD software. Test rig has abilities to tilt at any plane to simulate the arm movement and made of wood. The common movements during activities of daily living are (Abduction, Adduction, Flexion, Extension, Supination and Pronation) in Euler angles (Yaw, Pitch and Roll). A live-lift and axial load tests were done by the test rig in Euler angles simulating common arm movements. Results: The live-lift force is larger than the axial-load force at all cases. Conclusion: This experimental work covers two main tests for assessment the transradial socket at different positions and planes. It can predict when dislocation between the socket and residual limb will happen at any weight and plane.
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