Wroblewski, B Michael, Paul D Siney, and Patricia A Fleming. 2007. “Charnley Low-Frictional Torque Arthroplasty in Young Rheumatoid and Juvenile Rheumatoid Arthritis: 292 Hips Followed for an Average of 15 Years”. Acta Orthopaedica 78 (2):206-10. https://doi.org/10.1080/17453670710013690.