Meniscal sizing before allograft: Comparison of three imaging techniques
T X Haen1, P Boisrenoult1, C Steltzlen1
1Department of Orthopedic Surgery, Centre Hospitalier de Versailles, Le Chesnay, France.
The Knee
|July 8, 2018
Summary
Accurate meniscal sizing is crucial for allograft transplantation. New radiographic equations utilizing bony landmarks show promise for improving graft selection accuracy, performing comparably to MRI and CT arthrography in certain planes.
Area of Science:
- Orthopedic surgery
- Biomedical imaging
- Sports medicine
Background:
- Accurate meniscal sizing is critical for successful allograft transplantation.
- Current consensus on optimal imaging techniques for meniscal assessment is lacking.
- Plain radiographs, MRI, and CT arthrography are commonly used but their comparative accuracy is debated.
Purpose of the Study:
- To compare the accuracy of plain radiographs, MRI, and CT arthrography in assessing meniscal size.
- To evaluate the correlation between different imaging modalities.
- To develop improved methods for meniscal sizing using bony landmarks.
Main Methods:
- Retrospective analysis of 32 patients undergoing meniscal allograft transplantation.
- Blind and random evaluation of meniscal dimensions using radiographs, MRI, and CT arthrography.
- Development of new equations to determine meniscal dimensions from tibial plateau measurements.
Main Results:
- Radiographic methods provided satisfactory meniscal dimension evaluation in the sagittal plane, comparable to CT arthrography and MRI.
- Radiographic methods were less effective in the frontal plane.
- New equations derived from tibial plateau dimensions yielded a mean correlation coefficient of 0.39.
Conclusions:
- The accuracy of radiographic meniscal sizing correlates with the measured plane (sagittal vs. frontal).
- A novel radiographic method using bony landmarks is proposed to enhance graft selection accuracy.
- This new method offers a practical approach for improving pre-transplant meniscal assessment.
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