Review of Biomechanical Characteristics of Illizarov Ring Fixators Using Finite Element Analysis (FEA) of implants and fixators were carried out. Various illizarov fixators used for fracture fixation and lengthening of bones were reviewed. The illizarov ring fixators were modeled and analyzed using ANSYS Workbench FEA software. The research gap was found after the review. In this review biomechanical characters of various researchers were studied, the various configurations of the illizarov fixators were studied. The mathematical model gives the use of mathematics in analyzing the various fixators; it was reviewed in this paper. In vivo and in vitro tests conducted by various researchers were carried out. It is concluded that the titanium implants have Young's modulus equivalent to human bone and they have rigidity and strength which is very much required for the treatment of bone fractures. © 2021 Elsevier B.V., All rights reserved.