Discoid Meniscus - Everything You Need To Know - Dr. Nabil Ebraheim скачать в хорошем качестве

Discoid Meniscus - Everything You Need To Know - Dr. Nabil Ebraheim

Dr. Ebraheim’s educational animated video describes Discoid meniscus. The meniscus is a cushion structure made of cartilage which fits within the knee joint between the tibia and the femur. The medial meniscus is C-shaped and the lateral meniscus is more circular. The meniscus is made of type I collagen that provides shock absorption and stability of the knee joint. The meniscus helps to protect the knee joint allowing the bones to slide freely on each other. A discoid meniscus is a rare variation of the meniscus that usually affects the lateral meniscus of the knee in less than 5% of the population and could be bilateral in about 25% of the cases. A discoid meniscus is a large meniscus with abnormal attachment causing increased mobility of the meniscus. it causes a pop, click or snapping with locking and pain. There will be loss of full knee extension with tenderness on the lateral joint space. Symptoms occur more during extension of the knee. The discoid meniscus occurs due to abnormal development and increases in size of the meniscus. X-ray could show increased widening of the joint spaces. MRI will show the “bow tie” sign in three or more sagittal continuous cuts. The coronal MRI will show thick and flat meniscus extending beyond the halfway point of the condyle. Watanabe classification of discoid lateral meniscus: •Type I: block-shaped stable •Type II: block-shaped stable, partial meniscus (has good peripheral attachment). •Type III: unstable meniscus with stability arising only from the ligament of Wrisberg (no posterior meniscal tibial attachment). Treatment •Asymptomatic patient: observation •Symptomatic partial meniscectomy and saucerization with repair of type III (no posterior tibial meniscal attachment). Become a friend on facebook:   / drebraheim   Follow me on twitter: https://twitter.com/#!/DrEbraheim_UTMC