Which descriptor indicates damaged fibrocartilage on the quality of motion descriptors?

• A. Normal: smooth
• B. Popping, clicking, catching: damaged fibrocartilage
• C. Crepitus: rough articular cartilage
• D. Grinding: damaged articular cartilage

Answer: (B)

Popping, clicking, catching describes damaged fibrocartilage. When fibrocartilage such as a meniscus is injured, fragments can interfere with the joint during motion, causing mechanical symptoms like a sudden “catch” or a quick click as the piece moves or gets pinched between surfaces. This is characteristic of fibrocartilage pathology because it reflects a piece or disruption that intermittently blocks smooth movement.

Crepitus, by contrast, is more often linked to rough articular (hyaline) cartilage or gas in the joint, producing a crackling sensation. Grinding likewise points to roughness or wear of the articular surfaces themselves, not specifically fibrocartilage. Normal motion is smooth with no such sounds or sensations.