What is the role of deep fibers of the MCL?

• A. Stabilization against lateral forces
• B. Attachment to the meniscus
• C. Supporting flexion
• D. Connecting the quadriceps tendon

Answer: (B)

The deep fibers of the medial collateral ligament (MCL) play a crucial role in stabilizing the knee joint. Specifically, they are notable for their attachment to the medial meniscus. This connection is significant because it helps to stabilize the meniscus during knee movement and provides additional support to the knee against valgus forces.

The MCL itself is a key ligament that provides stability and prevents excessive inward (medial) movement of the knee. The deep fibers' relationship with the meniscus enhances the overall function of the knee, particularly during activities that involve pivoting or lateral movements.

Understanding this attachment is essential for recognizing how injuries to the MCL can also affect the meniscus, as they are closely linked in their functional roles within the knee joint.