★ MR Grade 2 Signal Intensity ★
1️⃣ General Description
- Horizontal, linear intrasubstance signal increases from the meniscus's capsular periphery without reaching an articular surface.
- Lacks a distinct cleavage plane or tear.
- Typically asymptomatic in patients.
- Not a prognostic indicator for advancing to grade 3 signal intensity.
✅ Grade 2C Signal
- Extensive triangular or wedge-shaped signals on multiple MRI images do not reach the meniscal surface.
- Low incidence (1.5%), with a 50% chance of indicating a tear.
- Surgical treatment is usually not recommended, except for discoid menisci.
2️⃣ MRI Findings of Discoid Meniscus
✅ Characteristics
- Thick grade 2 signal intensity on sagittal images indicates mucinous degeneration.
- Meniscectomy is often recommended for symptomatic cases, even without grade 3 signal intensity.
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