Comparison of the Pollard Method and the MRI Dimensions for Meniscal Sizing in Koreans

Abstract

Purpose: The purpose of this study was to investigate the accuracy of the Pollard method for meniscal sizing of the meniscal allograft by comparison with the MRI dimensions. Materials and Methods: The width and length of 50 medial and lateral menisci were measured and compared using the Pollard method and MRI. The meniscal thickness was measured using MRI and we evaluated the individual differences. Results: The measurements of the width of the medial meniscus and the length of the lateral meniscus using the Pollard method and MRI were similar (p=0.459, p=0.108, respectively). However, the measurements of the length of the medial meniscus and the width of the lateral meniscus using MRI were significantly higher that those measured using the Pollard method (p=0.000 and p=0.001, respectively). The medial and lateral meniscal thicknesses were 6.26±0.86 mm and 6.47±0.84 mm, respectively, and there was no significant individual difference. Conclusion: The measurements of the length of the medial meniscus and the width of the lateral meniscus, using the Pollard method and on MRI had significant differences. The Pollard method must be modified for meniscal sizing.