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SIMPLE METHOD FOR DETERMINE THE DEGREE OF WEAR TO A TOTAL KNEE PROSTHESIS IN VITRO

10.15660/AUOFMTE.2014-1.2972

Corneliu DRUGA, Ileana ROSCA, Mihai MANESCU

Volume XXIII (XIII), 2014/1

This paper presents a simple methodology of ex in vitro testing of a Low Contact Stress (LCS) Mobile-Bearing Total Knee System, produced by DePuy Orthopaedics, Inc. USA, on an experimental stand. To be tested LCS MobileBearing Total Knee System was designed and constructed two auxiliary devices. Testing the LCS System was made taking into account the provisions of international standards. The method for determining the degree of wear of the polyethylene component of the LCS System supposes several essential steps: cleaning and sterilization of the components (metallic and polymeric) of LCS System; weighing of polyethylene component; visual inspection of articulating surfaces; determining the average roughness of contact areas; determining the overall size of the system on a coordinate measuring machine (optional); performing a large number of cycles on experimental stand and determining of the specific parameters of wear and comparing them with data from the literature.

Keywords: Total Hip Arthroplasty, wear, in vitro, Low Contact Stress

ISSN 1583-0691, CNCSIS "Clasa B+"