1. Department of Biomedical Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong, China
2. Department of Electronic and Information Engineering, Faculty of Engineering, The Hong Kong Polytechnic University, Hong Kong, China
3. Department of Materials, Imperial College, London SW7 2AZ, UK
4. Department of Orthopaedics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
5. Laboratory of Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200240, China
6. Department of Orthopaedics, Tongji Hospital, School of Medicine, Tongji University, Shanghai 200065, China
7. Research Institute of Smart Ageing, The Hong Kong Polytechnic University, Hong Kong, China