Facts about Medial meniscus
- 10
Vascular supply to the medial meniscus is limited to its outer one-third, leaving the inner two-thirds avascular and unable to self-repair after injury.
- 09
Medial meniscus attachments to the joint capsule are significantly stronger than lateral meniscus attachments, making it more prone to being trapped and torn during twisting motions.
- 08
Load-bearing forces through the medial meniscus can reach 3 times body weight during deep squatting, making it a critical shock absorber in the knee joint.
- 07
During knee extension, the medial meniscus moves anteriorly up to 11 millimeters relative to the tibia, whereas the lateral meniscus translates approximately 17 millimeters posteriorly.
- 06
Approximately 90 degrees of knee flexion is required for the medial meniscus to achieve its maximum load-bearing capacity during weight-bearing activities.
- 05
Meniscectomy of the medial meniscus increases knee osteoarthritis risk by approximately 35 percent over 10 years compared to patients with intact menisci.
- 04
Longitudinal tears of the medial meniscus account for approximately 70 percent of all meniscal injuries treated surgically in orthopedic practices.
- 03
Fibrocartilage composition of the medial meniscus provides tensile strength approximately 20 percent greater than hyaline cartilage found on femoral and tibial surfaces.
- 02
Degenerative tears of the medial meniscus occur in approximately 60 percent of people over age 70 even without prior knee injury or symptoms.
- 01
The medial meniscus is C-shaped and covers approximately 50 percent more surface area than the lateral meniscus in the knee joint.