Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content ++ Lateral meniscus tearMedial meniscus tear ++ 717 Internal derangement of knee717.0 Old bucket handle tear of medial meniscus717.1 Derangement of anterior horn of medial meniscus717.2 Derangement of posterior horn of medial meniscus717.3 Other and unspecified derangement of medial meniscus717.4 Derangement of lateral meniscus717.40 Derangement of lateral meniscus unspecified717.41 Bucket handle tear of lateral meniscus717.42 Derangement of anterior horn of lateral meniscus717.43 Derangement of posterior horn of lateral meniscus717.49 Other derangement of lateral meniscus717.5 Derangement of meniscus not elsewhere classified ++ M23.009 Cystic meniscus, unspecified meniscus, unspecified kneeM23.202 Derangement of unspecified lateral meniscus due to old tear or injury, unspecified kneeM23.205 Derangement of unspecified medial meniscus due to old tear or injury, unspecified kneeM23.219 Derangement of anterior horn of medial meniscus due to old tear or injury, unspecified kneeM23.229 Derangement of posterior horn of medial meniscus due to old tear or injury, unspecified kneeM23.239 Derangement of other medial meniscus due to old tear or injury, unspecified kneeM23.249 Derangement of anterior horn of lateral meniscus due to old tear or injury, unspecified kneeM23.259 Derangement of posterior horn of lateral meniscus due to old tear or injury, unspecified kneeM23.269 Derangement of other lateral meniscus due to old tear or injury, unspecified kneeM23.305 Other meniscus derangements, unspecified medial meniscus, unspecified kneeM23.319 Other meniscus derangements, anterior horn of medial meniscus, unspecified kneeM23.329 Other meniscus derangements, posterior horn of medial meniscus, unspecified kneeM23.339 Other meniscus derangements, other medial meniscus, unspecified kneeM23.349 Other meniscus derangements, anterior horn of lateral meniscus, unspecified kneeM23.359 Other meniscus derangements, posterior horn of lateral meniscus, unspecified kneeM23.369 Other meniscus derangements, other lateral meniscus, unspecified knee ++ 4I: Impaired Joint Mobility, Motor Function, Muscle Performance, and Range of Motion Associated With Bony or Soft Tissue Surgery +++ Description ++ Tear of the fibrocartilage of the meniscusTears commonly occur from a twisting of the knee with knee flexionCan develop because of laxity in the kneeComplaint of joint locking and inability to straighten the knee +++ Essentials of Diagnosis ++ FrequencyNo true data on isolated incidence and prevalence of meniscal injury2Mechanism of injuryActivities that include cutting, deceleration, and landing from a jump3Classification of tear3Longitudinal tear: vertical tear in the meniscus with a longitudinal direction; usually located in the periphery of the meniscusThe longer the tear, the more unstable it is, and the end result is the dislocated central part of the meniscus (bucket-handle tear)Horizontal tear: horizontal cleavage in the meniscal tissueRadial tear: vertical tear starting in the free (central) margin of the meniscal tissueFlap tear: oblique vertical cleavage causing a flap tear (parrot beak); a flap tear can also be caused by a horizontal tearTear in degenerative meniscus: a tear or ... Your Access profile is currently affiliated with '[InstitutionA]' and is in the process of switching affiliations to '[InstitutionB]'. Please click ‘Continue’ to continue the affiliation switch, otherwise click ‘Cancel’ to cancel signing in. Get Free Access Through Your Institution Learn how to see if your library subscribes to McGraw Hill Medical products. Subscribe: Institutional or Individual Sign In Username Error: Please enter User Name Password Error: Please enter Password Forgot Password? Forgot Username? Sign in via OpenAthens Sign in via Shibboleth