CC2023: Meniscal Extrusion Measurements After Posterior Medial Meniscus Root Tears: A Systematic Review and Meta-analysis (October 2023)-Meniscal Extrusion Measurements After Posterior Medial Meniscus Root Tears: A Systematic Review and Meta-analysis

Meniscal Extrusion Measurements After Posterior Medial Meniscus Root Tears: A Systematic Review and Meta-analysis

Pdf Summary

A systematic review and meta-analysis investigated the measurement techniques and reported values of meniscal extrusion in knees with posterior medial meniscus root tears (PMMRTs). The review included 45 studies that used various imaging modalities. The most commonly used landmarks for measuring meniscal extrusion were the medial collateral ligament (MCL), the midpoint of the anterior-posterior length of the medial meniscus, and the middle of the medial femoral condyle. The pooled mean meniscal extrusion values were 3.5 mm, 3.9 mm, and 4.5 mm, respectively, depending on the measurement location. There were no significant differences between the different imaging modalities. The overall pooled mean meniscal extrusion from all included studies was 3.2 mm. The review found substantial variation in measurement techniques for meniscal extrusion, particularly in the coronal cross-sectional reference location. The authors recommend that future studies provide clear descriptions of the measurement method and use a uniform measurement methodology to allow for comparisons between studies.

Keywords

systematic review

meta-analysis

meniscal extrusion

posterior medial meniscus root tears

measurement techniques

imaging modalities

medial collateral ligament

pooled mean meniscal extrusion values

coronal cross-sectional reference location

measurement method