Proton-density-weighted MRI scan showing meniscal extrusion (arrow) >3 mm from the medial margin of the proximal part of the tibia in the coronal plane. A vertical line is drawn intersecting the margin of the medial tibial plateau at the site of transition from horizontal to vertical. Extrusion is measured from this line to the outer edge of the meniscus. (Reprinted, with permission of Springer, from: Choi SH, Bae S, Ji SK, Chang MJ. The MRI findings of meniscal root tear of the medial meniscus: emphasis on coronal, sagittal and axial images. Knee Surg Sports Traumatol Arthrosc. 2012 Oct;20:2098-103. Epub 2011 Nov 24.)
Significantly better postoperative Lysholm (p < 0.039) and IKDC (p < 0.037) scores compared to partial meniscectomy group; 35% conversion to total knee arthroplasty following meniscectomy with 0% conversion after repair
TABLE IIIGrade of Recommendation for Meniscal Root Repair*
While additional data are necessary to determine the role root repair plays in joint preservation and which repair technique is optimal, on the basis of the currently available literature, a Grade-B recommendation is appropriate for the repair of meniscal root tears
↵* Grade A indicates good evidence (Level-I studies with consistent findings) for or against recommending intervention. Grade B indicates fair evidence (Level-II or III studies with consistent findings) for or against recommending intervention. Grade C indicates conflicting or poor-quality evidence (Level-IV or V studies) not allowing a recommendation for or against intervention. Grade I indicates that there is insufficient evidence to make a recommendation.