Millions of patients all over the world undergo orthopaedic surgery .these patients are fixed with bone plate fixators and ring fixators , the healing of the bone using these fixators takes longer time due to poorbiomechanical design .quick healing of the bone depends on stiffnessof the fixator .the Compression and Interfragmentary Displacement testing equipment for Bone fixators and Ring fixators is used to find the stiffness of the fixators . The fixator is tested in the
