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Driven by Research.
Defined by Excellence.

Research and academic excellence are the cornerstones of Medera Medical Group. By collaborating with hospitals, universities, and industry leaders, we have successfully spearheaded major smart healthcare research projects. Our robust academic output includes over 50 publications in SCI and core journals, alongside three patents for minimally invasive surgical materials.

  • 2023

    Does intraoperative fluoroscopy improve acetabular component positioning and limb-length discrepancy during direct anterior total hip arthroplasty? A meta-analysis

    Changjiao Sun, Woo Guan Lee, Qi Ma, Xiaofei Zhang, Zhe Zhao, Xu Cai

    Journal of Orthopaedic Surgery and Research

    This meta-analysis demonstrates that while intraoperative fluoroscopy during direct anterior total hip arthroplasty does not significantly improve acetabular cup positioning or limb-length discrepancy, it may still provide valuable guidance for less experienced surgeons.

    Original Article

  • 2023

    Influence of axial rotation on measurement of medial proximal tibial angle

    Du Ruiyong, Wu Sha, Ma Qi, Liu Pu, Jing Feng, Cai Xu

    China Journal of Orthopaedics and Traumatology

    This study demonstrates that tibial axial rotation during weight-bearing radiographs significantly alters the measurement of the medial proximal tibial angle (MPTA), highlighting the critical need for precise patient positioning to ensure accurate surgical planning.

    Original Article

  • 2023

    Early Effect of Arthroscopic Fixation for Tibial Avulsion Fracture of Anterior Cruciate Ligament with Tightening Titanium Plate

    Wu Sha, Gao Hong, Lou Jiawang, Liu Pu, Zhang Wei, Cai Xu

    Chinese Journal of Bone and Joint Surgery

    This study demonstrates that arthroscopic tightening titanium plate fixation is a highly effective and safe treatment for ACL tibial avulsion fractures, providing excellent joint stability and rapid functional recovery.

    Original Article

  • 2023

    Evaluation of knee cartilage based on MRI artificial intelligence reconstruction model of knee joint

    Gao Hong, Xue Binge, Wu Sha, Wang Yakui, Fu Pengfei, Shen Le, Lou Jiawang, Ma Qi, Liu Pu, Cai Xu

    Chinese Journal of Orthopaedics

    This study demonstrates that an AI reconstruction model based on knee MRI provides high sensitivity and specificity for accurately diagnosing severe cartilage injury, offering a reliable non-invasive tool for osteoarthritis evaluation.

    Original Article

  • 2022

    Sensor-guided gap balance versus manual gap balance in primary total knee arthroplasty: a meta-analysis

    Sun Changjiao,Zhao Zhe,LeeWoo Guan,MaQi,Zhang Xiaofei,Zhu Jianjin,CaiXu

    Journal of Orthopaedic Surgery and Research

    This meta-analysis demonstrates that utilizing sensor-guided gap balancing in primary total knee arthroplasty significantly reduces the need for manipulation under anesthesia, despite an increase in intraoperative balancing procedures.

    Original Article

  • 2022

    The combined utilization of predictors seems more suitable to diagnose and predict rotator cuff tears

    Ma Qi,Sun Changjiao,Gao Hong,Cai Xu

    BMC Musculoskeletal Disorders

    This retrospective study demonstrates that the combined utilization of morphological predictors, particularly the critical shoulder angle (CSA) and double-circle radius ratio (DRR), yields superior diagnostic and predictive performance for rotator cuff tears compared to using any single predictor.

    Original Article

  • 2022

    Research progress of hip arthroplasty in patients with osteoporosis

    Sun Changjiao, Yu Peng, Xu Pingping, Li Huimin, Xie Lanlan, Yang Kai, Cai Xu

    Chinese Journal of Bone and Joint

    This comprehensive review summarizes the critical clinical considerations, ranging from prosthesis selection to perioperative complication management, for optimizing total hip arthroplasty outcomes in patients with concurrent osteoporosis.

    Original Article

  • 2022

    A Feasibility Study of Knee Joint Semantic Segmentation on 3D MR Images

    Le SHEN,Qian LU,Hu TANG,Sha WU,Yi YI,Yunda SUN,Qian QIU,Li ZHANG,Zhuozhao ZHENG,Xu CAI

    CT Theory and Applications

    This study demonstrates the feasibility and high accuracy of a novel deep learning approach for the automated, end-to-end 3D semantic segmentation of 15 anatomical knee structures on MR images.

    Original Article

  • 2022

    The Double‐Circle System in the Greater Tuberosity: Using Radius to Predict Rotator Cuff Tear

    Ma Qi,Sun Changjiao,Liu Pu,Yu Peng,Cai Xu

    Orthopaedic Surgery

    This study proposes the double-circle radius ratio (DRR) as a novel and highly reliable morphological predictor for diagnosing rotator cuff tears, offering superior accuracy over traditional angular parameters.

    Original Article

  • 2022

    Application of linezolid bone cement in periprosthetic joint infection

    Sun Changjiao, Ma Qi, Fang Liye, Xu Pingping, Li Huimin, Cai Xu

    Chinese Journal of Joint Surgery

    This review highlights the promising application of linezolid bone cement in treating periprosthetic joint infections, offering a highly effective alternative against drug-resistant and biofilm-producing bacteria.

    Original Article

  • 2022

    Evaluation of acetabular anteversion after total hip arthroplasty

    Liu Pu, Wu Sha, Gao Hong, Lou Jiawang, Zhang Wei, Cai Xu

    China Journal of Orthopaedics and Traumatology

    This study demonstrates that utilizing anteroposterior X-ray films offers a reliable, low-radiation, and cost-effective method for the preliminary evaluation of acetabular anteversion following total hip arthroplasty.

    Original Article

  • 2022

    Meniscus Graft Augmentation for a Midsubstance Tear of the Medial Collateral Ligament during Total Knee Arthroplasty

    Changjiao Sun, Wei Rong, Ruiyong Du, Sha Wu, Pu Liu, Wei Zhang, Xu Cai

    The Journal of Knee Surgery

    This study demonstrates that utilizing a meniscus autograft transfer safely and effectively repairs severe medial collateral ligament transections during total knee arthroplasty, restoring joint stability while allowing the use of unconstrained implants.

    Original Article

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