Which feature explains why the medial meniscus is injured far more frequently than the lateral meniscus?
- A It is smaller and lies wholly within the joint cavity
- B It is firmly attached to the medial collateral ligament and capsule ✓
- C It has a poorer blood supply than the lateral meniscus
- D It is nearly circular and covers a wider area of tibia
Correct answer: B. It is firmly attached to the medial collateral ligament and capsule
Explanation
The medial meniscus is C-shaped and its periphery is firmly adherent to the deep fibres of the tibial collateral (medial) ligament and the joint capsule, making it almost immobile and vulnerable to tear when the MCL is stressed. The lateral meniscus is more circular, separated from the fibular collateral ligament by the popliteus tendon, and retains mobility, so it escapes injury more often.
Reference: Gray's Anatomy for Students, 4th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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