1. Department of Orthopaedic Surgery, Orthopaedic Bioengineering Research Center, Newton‐Wellesley HospitalHarvard Medical School Newton Massachusetts
2. Department of Orthopaedic Surgery, Massachusetts General HospitalHarvard Medical School Boston Massachusetts
3. Tribology Research Institute, School of Mechanical EngineeringSouthwest Jiaotong University Chengdu Sichuan China
4. Institute of Medical and Biological Engineering, School of Mechanical EngineeringUniversity of Leeds Leeds UK