Duloxetine and pregabalin: High-dose monotherapy or their combination?—Study protocol for a randomized trial in patients with postoperative pain after total knee arthroplasty based on the classification of central sensitization inventory scores

• Haodong Wu ,

  Roles Visualization, Writing – original draft

  ¶☯ Co-first authorship: The first two authors contributed equally to this manuscript.

  Affiliations Department of Knee Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China, Medical College of Yan’an University, Yan’an University, Yan’an, Shannxi, China

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• Shuxin Yao ,

  Roles Writing – original draft

  ¶☯ Co-first authorship: The first two authors contributed equally to this manuscript.

  Affiliation Department of Knee Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China

  ⨯
• Yuanchi Huang ,

  Roles Visualization, Writing – review & editing

  ¶‡ Co-Corresponding authorship: The last three authors contributed equally to this manuscript and shared the corresponding authorship.

  Affiliation Department of Knee Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China

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• Chao Xu ,

  Roles Funding acquisition, Supervision, Writing – review & editing

  ¶‡ Co-Corresponding authorship: The last three authors contributed equally to this manuscript and shared the corresponding authorship.

  Affiliations Department of Knee Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China, Department of Health Statistics, Faculty of Preventive Medicine, the Air Force Military Medical University, Xi’an, China

  https://orcid.org/0000-0001-9693-0218

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• Jianbing Ma

  Roles Funding acquisition, Supervision, Writing – review & editing

  * E-mail: drmajianbing@163.com

  ¶‡ Co-Corresponding authorship: The last three authors contributed equally to this manuscript and shared the corresponding authorship.

  Affiliation Department of Knee Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China

  https://orcid.org/0009-0009-0956-5319

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