Meniscus Structure and Function

The video tutorial provides an in-depth look at the meniscus, a crucial fibrocartilaginous structure in the knee. It covers the meniscus's primary functions, including load transmission and stabilization, and its role in proprioception. The macro structure is divided into cellular and extracellular components, with a focus on fibro chondrocytes and collagen. The micro structure is detailed through its three layers and fiber arrangements, highlighting the importance of circumferential and radial fibers. The tutorial also explains the meniscus's blood supply, divided into zones, and how this affects healing potential.

What is the primary function of the meniscus in the knee?

• To transmit load across the knee

• To produce synovial fluid

• To increase flexibility

• To enhance muscle strength

What happens to the knee's contact area after a full meniscectomy?

• It remains unchanged

• It increases by 100 percent

• It decreases by 50 to 70 percent

• It increases by 50 to 70 percent

What is the main cellular component of the meniscus?

• Fibro chondrocytes

• Adipocytes

• Myocytes

• Osteocytes

What is the predominant type of collagen found in the meniscus?

• Collagen type 2

• Collagen type 5

• Collagen type 3

• Collagen type 1

How many distinct layers make up the meniscus structure?

• Four

• Three

• Five

• Two

What is the role of radial fibers in the meniscus?

• To enhance muscle strength

• To produce synovial fluid

• To interlink circumferential fibers

• To increase flexibility

Why are vertical sutures preferred in meniscus repair?

• They are more cost-effective

• They are less painful

• They engage more circumferential fibers

• They are easier to apply

Where does the meniscus receive its blood supply from?

• The peripheral region

• The central region

• The synovial fluid

• The articular cartilage

Which zone of the meniscus has the best healing potential?

• Red-white zone

• White-white zone

• Red-red zone

• Central zone

What is the significance of the red-red zone in the meniscus?

• It has the least blood supply

• It is the thickest part of the meniscus

• It is the most prone to injury

• It has the best healing potential