**Core Concept**
Meniscal tears are a common injury in the knee joint, often resulting from a specific combination of movements that stress the menisci. The menisci are two C-shaped cartilages that provide cushioning, shock absorption, and joint stability in the knee.

**Why the Correct Answer is Right**
Meniscal tears typically occur when the knee is subjected to a combination of flexion (bending) and rotation, which can cause the meniscus to be pinched between the tibia and femur. This is because the menisci are not as mobile as the surrounding ligaments and tendons, making them more susceptible to injury during rotational movements. The mechanism of injury often involves a sudden pivot or twisting motion, such as when changing direction during sports or landing from a jump.

**Why Each Wrong Option is Incorrect**
**Option A:** Hyperextension, or excessive knee straightening, can lead to ligament injuries, such as anterior cruciate ligament (ACL) tears, but is less likely to cause meniscal tears.

**Option C:** Simple hyperflexion, or excessive knee bending, can cause knee pain and discomfort, but is not typically associated with meniscal tears.

**Option D:** Compression, or direct pressure on the knee, can cause various injuries, including fractures and joint effusions, but is not a common mechanism for meniscal tears.

**Clinical Pearl / High-Yield Fact**
When evaluating a patient with a suspected meniscal tear, clinicians should ask about the mechanism of injury, focusing on any twisting or pivoting movements that may have occurred. This information can help guide further diagnostic testing and treatment.

**✓ Correct Answer: B. Flexion and rotation. Meniscal tears usually result from a combination of flexion and rotation.**