FEA and Experimental Investigation of Prosthetic Knee Joint

Abstract

The aim of this study is to look at how stresses are distributed in a polyethylene-based prosthetic knee joint. Ansys 18.1 software is used for finite element analysis. In experimental studies, the effects of sagittal radius, flexion angle, and external load on knee joint stresses were investigated. The prosthetic knee joint is created as a 2D model using parameters like sagittal radius and flexion angles in design modeling software. The experimental work has been carried out in a polariscope machine setup, The photo elastic model is tested in different loading conditions and finds stress in that model. Finally, results are validated experimental results with FEA results.

Fea and Experimental Investigation of Prosthetic Knee Joint

“…Choosing tetra or quadra elements and assigning material parameters such as young's modulus (E) = 3.32E3 MPa and poison's ratio (𝜗 ) = 0.34 and density (𝜌) =1.3 g/cm 3 . The analytical software then solves the problem and returns the answer after applying boundary conditions to the model [9].…”

“…Both components are in liquid form and need to be mixed for around 120 minutes. Once thoroughly blended, this mixture is poured into the knee joint component's mold cavity, taking approximately 48 hours to fully solidify [9].…”