ISAKOS classification of meniscal tears classifies meniscal tears based on arthroscopic evaluation 1.
Usage
The classification system is primarily developed for surgical documentation of meniscal tears and it has shown good inter-observer reliability amongst surgeons 2,3.
Classification
Tear depth
partial
complete
Rim width
based on circumferential location – classified into zones 1,2 and 3.
Radial location
tear is posterior, mid body or anterior
Whether tear is central to popliteal hiatus or not
Tear pattern
vertical flap
horizontal flap
complex
Quality of tissue
degenerative
non-degenerative
undetermined
Length of tear of in millimeters (mm)
Indicate amount and percent of meniscus excised