Torn Meniscus

  • Medical Author:
    Benjamin Wedro, MD, FACEP, FAAEM

    Dr. Ben Wedro practices emergency medicine at Gundersen Clinic, a regional trauma center in La Crosse, Wisconsin. His background includes undergraduate and medical studies at the University of Alberta, a Family Practice internship at Queen's University in Kingston, Ontario and residency training in Emergency Medicine at the University of Oklahoma Health Sciences Center.

  • Medical Editor: William C. Shiel Jr., MD, FACP, FACR
    William C. Shiel Jr., MD, FACP, FACR

    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

What is a torn meniscus?

A torn meniscus is damage from a tear in the cartilage that is positioned on top of the tibia to allows the femur to glide when the knee joint moves. Tears are usually described by where they are located anatomically in the C shape and by their appearance (for example, "bucket handle" tear, longitudinal, parrot beak, and transverse). While physical examination may predict whether it is the medial or lateral meniscus that is damaged, a diagnostic procedure, like an MRI or arthroscopic surgery, can locate the specific part of the cartilage anatomy that is torn and its appearance.

Because the blood supply is different to each part of the meniscus, knowing where the tear is located may help decide how easily an injury might heal (with or without surgery). The better the blood supply, the better the potential for recovery. The outside rim of cartilage has better blood supply than the central part of the "C." Blood supply to knee cartilage also decreases with age, and up to 20% of normal blood supply is lost by age 40.

Reviewed on 6/12/2017
References
REFERENCES:

Dutton, M. Dutton's Orthopedic Examination, Evaluation and Intervention, 3rd edition. McGraw Hill Medical, 2012.

Johnson, D.H., and D.A. Pedowitz. Practical Orthopedic Sports Medicine and Arthroscopy. Philadelphia, PA: Lippincott Williams & Wilkins, 2007.

Rodriguez-Fontan, F., et al. "Stem and Progenitor Cells for Cartilage Repair: Source, Safety, Evidence, and Efficacy." Operative Techniques in Sports Medicine 25 (2017): 25-33.

Zhang, J.Y., et al."Utilization of Platelet-Rich Plasma for Musculoskeletal Injuries." Orthopaedic Journal of Sports Medicine 4 (2016): 12.

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