1. Guangdong Provincial Biomedical Innovation Platform of Regeneration and Repair of Spinal Cord and Nerve Injury Department of Orthopedic Surgery The Seventh Affiliated Hospital of Sun Yat‐sen University Shenzhen China
2. Guangdong Provincial Key Laboratory of Orthopaedics and Traumatology /Orthopaedic Research Institute Department of Spine Surgery The First Affiliated Hospital of Sun Yat‐sen University Guangzhou China
3. Department of Radiology The First Affiliated Hospital of Sun Yat‐sen University Guangzhou China
4. Department of Ultrasound The Seventh Affiliated Hospital of Sun Yat‐sen University Shenzhen China