Department of Orthopedics Shanghai East Hospital Tongji University School of Medicine Shanghai 200120 China;
Department of Orthopedics Shanghai East Hospital Tongji University School of Medicine Shanghai 200120 China;
Department of Orthopedics Shanghai East Hospital Tongji University School of Medicine Shanghai 200120 China;
Department of Orthopedics Shanghai Tongji Hospital Tongji University School of Medicine Shanghai 200092 China;
Department of Orthopedics Shanghai East Hospital Tongji University School of Medicine Shanghai 200120 China;
Department of Orthopedics Shanghai East Hospital Tongji University School of Medicine Shanghai 200120 China;
Department of Orthopedics Shanghai East Hospital Tongji University School of Medicine Shanghai 200120 China;
Spine; Anterior cervical surgery; Negative pressure; Drainage; Gastrointestinal decompression apparatus; Silica gel negative pressure drainage ball;