Meniscus Injury and Function Assessment

The video tutorial explains the anatomy and function of the meniscus, a cartilage structure in the knee joint. It covers the meniscus's role in shock absorption, stability, and load sharing. The tutorial discusses the blood supply zones, healing potential, and types of meniscus tears, including their causes and symptoms. It also highlights the importance of the meniscus in preventing arthritis and the implications of meniscus removal.

What is the shape of the medial meniscus?

• Circular

• C-shaped

• Triangular

• Oval

What percentage of the lateral tibial plateau is covered by the lateral meniscus?

• 80%

• 60%

• 50%

• 70%

What is one of the primary functions of the meniscus in the knee joint?

• Increase bone density

• Provide shock absorption

• Enhance muscle strength

• Improve blood circulation

What happens to contact stress when the meniscus is removed?

• It decreases

• It becomes negligible

• It remains the same

• It increases two to three times

Which zone of the meniscus is most likely to heal after a tear?

• Blue zone

• Red-white zone

• Red-red zone

• White-white zone

What is the primary source of nourishment for the inner third of the meniscus?

• Blood vessels

• Synovial fluid

• Nerve endings

• Muscle tissue

What type of meniscal tear is most common in older individuals?

• Acute tear

• Traumatic tear

• Degenerative tear

• Chronic tear

Which activity is most likely to cause a meniscal tear?

• Cycling

• Swimming

• Walking

• Twisting or jumping

What makes the lateral meniscus more mobile compared to the medial meniscus?

• The popliteus hiatus

• The presence of more collagen

• Its shape

• Its size

What is indicated by a 'double PCL sign' on an MRI?

• A bucket handle tear of the medial meniscus

• A torn ACL

• A discoid meniscus

• A healthy meniscus