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The Use of Mixed Reality in Custom-Made Revision Hip Arthroplasty: A First Case Report
Published on: August 4, 2022
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Reliability and validity test of a novel three-dimensional acetabular bone defect classification system aided with
Jingwei Zhang1, Yi Hu1, Hua Ying1
1Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, 639# Zhizaoju Road, Shanghai, 200011, People's Republic of China.
BMC Musculoskeletal Disorders
|May 9, 2022
Summary
This study introduces a 3D acetabular defect classification system using additive manufacturing (AM) models for hip revision surgery. The system demonstrates excellent reliability and validity, improving surgical planning and defect assessment.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Medical Imaging
Background:
- Accurate assessment of acetabular defects is crucial for successful hip revision arthroplasty.
- Additive manufacturing (AM) offers novel capabilities for creating physical models of bone defects.
- Current methods require enhanced tools for precise surgical planning in revision hip arthroplasty.
Purpose of the Study:
- To propose and evaluate a novel three-dimensional (3D) acetabular bone defect classification system.
- To assess the reliability and validity of this classification system when aided by AM models.
- To determine the system's effectiveness in improving surgical plan accuracy for hip revision arthroplasty.
Main Methods:
- A retrospective review of 104 hip revision arthroplasty cases was conducted.
- Forty-five cases with AM models were evaluated by three orthopedic surgeons using the proposed classification system.
- Surgeons re-evaluated defects and surgical plans after two weeks to assess reliability and validity using correlation coefficients.
Main Results:
- The 3D acetabular defect classification system demonstrated excellent inter-observer and intra-observer reliability (ICC > 0.947 and 0.958, respectively).
- Validity of the classification results was high, with kappa correlation coefficients ranging from 0.951 to 0.967.
- Reliability and validity for corresponding surgical plans were also excellent, with all correlation coefficients exceeding 0.9.
Conclusions:
- The proposed 3D acetabular defect classification system, when used with AM models, exhibits excellent reliability and validity.
- This system facilitates accurate bone defect assessment and supports the development of reliable surgical plans for hip revision arthroplasty.
- The classification system aided by AM models is a valuable and promising tool for preoperative evaluation in revision hip surgery.
