Standardized Knee Ultrasound Protocol for Dynamic Meniscus Extrusion Evaluation After Meniscus Allograft Transplantation

Meniscus allograft transplantation has demonstrated promising clinical outcomes in the management of total meniscal deficiency. Magnetic resonance imaging (MRI) is commonly used to assess graft integrity and position, particularly meniscus extrusion; however, MRI has limitations, including high cost, limited accessibility, and inability to provide dynamic, real-time assessments. Furthermore, static MRI findings often show poor correlation with clinical outcomes, underscoring the need for complementary methods. This Technical Note presents a standardized knee ultrasound protocol for dynamic evaluation of meniscus extrusion after meniscus allograft transplantation. Ultrasonography provides a cost-effective, accessible, and in-office modality that enables real-time assessment of graft function under axial loading, offering a valuable alternative to MRI for postoperative monitoring.