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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.

  • 2026

    Clinical Effect of Suture Reinforcement for Injury of the Distal Tibial Insertion of Posterior Cruciate Ligament During Cruciate-Retaining Total Knee Arthroplasty

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

    Journal of Practical Orthopaedics

    This retrospective study demonstrates that suture reinforcement for distal tibial insertion injuries of the posterior cruciate ligament during cruciate-retaining total knee arthroplasty effectively restores ligament function, enhances joint stability, and yields high patient satisfaction.

    Original Article

  • 2026

    Selection of joint replacement methods based on AI cartilage model

    Wei Zhang, Hong Gao, Baojing Zhao, Qi Ma & Xu Cai

    Scientific Reports

    This study demonstrates how an AI-based cartilage model accurately quantifies joint damage to guide personalized surgical decision-making between TKA and UKA.

    Original Article

  • 2025

    Bilateral Total Knee Arthroplasty With Custom 3D-Printed Implants in a Patient With Juvenile Idiopathic Arthritis: A Case Report

    Zhang Wei, Zhao Baojing, Cai Xu, Wu Sha, Ma Qi, Gao Hong

    Journal of Practical Orthopaedics

    This case report highlights the successful application of custom 3D-printed implants in bilateral total knee arthroplasty to effectively correct severe fixed flexion deformity in a patient with juvenile rheumatoid arthritis.

    Original Article

  • 2024

    The effect of intraoperative fluoroscopy on acetabular component positioning and patient anatomy restoration during posterior or posterolateral approach total hip arthroplasty: a meta-analysis

    Changjiao Sun, Woo Guan Lee, Qi Ma, Xiaofei Zhang, Fei Song, Xu Cai

    Medicine

    This meta-analysis demonstrates that utilizing intraoperative fluoroscopy during posterior approach total hip arthroplasty significantly improves the restoration of leg length and femoral offset, despite having no significant impact on acetabular cup positioning.

    Original Article

  • 2024

    Comparison of the biomechanical properties of grafts in three anterior cruciate ligament reconstruction techniques based on three-dimensional finite element analysis

    Jiawnag Lou, Qi Ma, Xijiu Zhao, Sha Wu, Hong Gao, Wei Zhang, Baojing Zhao & Xu Cai

    Journal of Orthopaedic Surgery and Research

    This biomechanical study reveals that flat-tunnel anterior cruciate ligament (ACL) reconstruction provides superior stress dispersion and effective joint stability compared to traditional techniques, offering a promising optimized surgical approach.

    Original Article

  • 2024

    Evaluation of the consistency of the MRI- based AI segmentation cartilage model using the natural tibial plateau cartilage

    Changjiao Sun, Hong Gao, Sha Wu, Qian Lu, Yakui Wang, Xu Cai

    Journal of Orthopaedic Surgery and Research

    This study demonstrates that an MRI-based AI cartilage segmentation model reliably extracts key 2D morphological features for osteoarthritis diagnosis, though further refinement is required to improve 3D volume and thickness estimation.

    Original Article

  • 2023

    Bioinspired Hard–Soft Composite Scaffold with Excellent Lubrication and Osteogenic Properties for the Treatment of Osteochondral Defect

    Keming Hu, Qi Ma, Weicheng Guo, Weiwei Zhao, Yanran Zhao, Xu Cai, Hongyu Zhang

    Advanced Materials Interfaces

    This study details the development of a novel bioinspired hard-soft composite scaffold that combines excellent hydration lubrication and osteogenic properties to effectively treat osteochondral defects.

    Original Article

  • 2023

    Progress of shoulder arthroplasty in patients with osteoporosis

    Sun Changjiao, Yu Peng, Cai Xu, Pan Yongwei

    Chinese Journal of Joint Surgery

    This comprehensive review highlights recent surgical advancements and optimized implant strategies in shoulder arthroplasty designed to overcome the challenges of poor bone quality and improve functional recovery in osteoporotic patients.

    Original Article

  • 2023

    Suture and Titanium Plate Fixation of a Tibial Intercondylar Eminence Avulsion Fracture: A Case Report and Literature Review

    Sun Changjiao, Du Ruiyong, Wu Sha, Yu Peng, Fang Liye, Cai Xu

    Journal of Chinese Physician

    This case report highlights the successful application of an arthroscopic Tightrope suture and titanium plate fixation system via a double bone tunnel to effectively treat a tibial eminence avulsion fracture and restore knee stability.

    Original Article

  • 2023

    Primary Right Total Knee Arthroplasty and Left Revision Total Knee Arthroplasty in a Patient with Rheumatoid Arthritis: A Case Report

    Sun Changjiao, Wu Sha, Ma Qi, Fang Liye, Yu Peng, Cai Xu

    Journal of Practical Orthopaedics

    This case report highlights an innovative concurrent bilateral knee surgery in a rheumatoid arthritis patient, where the resected tibial bone block from a primary right TKA was successfully utilized to reconstruct a bone defect during a left revision TKA.

    Original Article

  • 2023

    Surgical challenges of total knee arthroplasty in patients with hemophilia

    Sun Changjiao, Xu Pingping, Xie Lanlan, Li Huimin, Yang Kai, Cai Xu, Chen Lianxu

    Chinese Journal of Joint Surgery

    This comprehensive review summarizes the key surgical challenges and crucial precautions in total knee arthroplasty for patients with advanced hemophilic arthritis to help optimize clinical outcomes.

    Original Article

  • 2023

    The effect of intraoperative fluoroscopy on acetabular component positioning and patient anatomy restoration during posterior or posterolateral approach total hip arthroplasty: a meta-analysis

    Changjiao Sun, Woo Guan Lee, Qi Ma, Xiaofei Zhang, Fei Song, Xu Cai

    Archives of Orthopaedic and Trauma Surgery

    This meta-analysis demonstrates that utilizing intraoperative fluoroscopy during posterior or posterolateral approach total hip arthroplasty significantly improves the restoration of leg length and femoral offset, despite having no significant impact on acetabular cup positioning.

    Original Article

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