**Core Concept**
Calcification of meniscal cartilage is a rare pathological finding that can be associated with various conditions, including degenerative joint disease, trauma, and systemic disorders. It involves the deposition of calcium salts within the meniscus, leading to its hardening and potential disruption of joint function.

**Why the Correct Answer is Right**
Calcification of meniscal cartilage is often seen in association with osteoarthritis, particularly in the knee joint. This process is thought to result from the activation of chondrocytes, which produce calcium-rich matrix vesicles that contribute to the calcification of the meniscus. The calcified meniscus can become brittle and prone to fragmentation, leading to further joint damage and pain.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because calcification of meniscal cartilage is not typically associated with meniscal tears or degenerative meniscal disease, which are more common conditions affecting the meniscus.
* **Option B:** This option is incorrect because calcification of meniscal cartilage is not a characteristic feature of osteochondritis dissecans, which involves the loosening of cartilage fragments from the underlying bone.
* **Option C:** This option is incorrect because calcification of meniscal cartilage is not typically seen in association with ligamentous injuries or meniscal tears, which are more common conditions affecting the knee joint.

**Clinical Pearl / High-Yield Fact**
It is essential to remember that calcification of meniscal cartilage can be a subtle finding on imaging studies, and its presence may suggest underlying degenerative joint disease or other systemic conditions. A high index of suspicion is necessary to identify this finding, particularly in patients with knee pain or joint instability.

**Correct Answer:** D.