Medial meniscus - wikipedia Medial meniscus Medial meniscus Head of right tibia seen from above, showing menisci and attachments of ligaments. ( Medial meniscus visible at left. ) Left knee joint from behind, showing interior ligaments. Details Identifiers Latin meniscus medialis TA A03. 6.08. 005 FMA 44620 Anatomical terminology ( edit on Wikidata ) The medial meniscus is a fibrocartilage semicircular band that spans the knee joint medially, located between the medial condyle of the femur and the medial condyle of the tibia. It is also referred to as the internal semilunar fibrocartilage. The medial meniscus has more of a crescent shape while the lateral meniscus is more circular. The anterior aspects of both menisci are connected by the transverse ligament. It is a common site of injury, especially if the knee is twisted. Contents 1 Structure 2 Function 3 Clinical significance 3.1 Injury 4 See also 5 Additional images 6 References 6.1 Books 7 External links Structure The meniscus attaches to the tibia via coronary ligaments. Its anterior end, thin and pointed, is attached to the anterior intercondyloid fossa of the tibia, in front of the anterior cruciate ligament ; Its posterior end is fixed to the posterior intercondyloid fossa of the tibia, between the attachments of the lateral meniscus and the posterior cruciate ligament. It is fused with the tibial collateral ligament which makes it far less mobile than the lateral meniscus. The points of attachment are relatively widely separated and, because the meniscus is wider posteriorly than anteriorly, the anterior crus is considerably thinner than the posterior crus. The greatest displacement of the meniscus is caused by external rotation, while internal rotation relaxes it. During rotational movements of the tibia ( with the knee flexed 90 degrees ), the medial meniscus remains relatively fixed while the lateral part of the lateral meniscus is displaced across the tibial condyle below. Function The medial meniscus separates the tibia and femur to decrease the contact area between the bones, and serves as a shock absorber reducing the peak contact force experienced. It also reduces friction between the two bones to allow smooth movement in the knee and distribute load during movement. Clinical significance Injury Medial meniscus injury Acute injury to the medial meniscus frequently accompanies an injury to the ACL ( anterior cruciate ligament ) or MCL ( medial collateral ligament ). A person occasionally injures the medial meniscus without harming the ligaments. Healing of the medial meniscus is generally not possible unless the patient is very young, usually < 15 years old. Damage to the outer third of the meniscus has the best healing potential because of the blood supply, but the inner two thirds of the medial meniscus has a limited blood supply and thus limited healing ability. Large tears to the meniscus may require surgical repair or removal. In terms of a meniscus tear, the doctor can categorize the injury in a plethora of ways. For example, a tear on the outer edge of the meniscus has great chance of healing. Doctors call this site the `` red zone '' because this outer portion of the meniscus is highly vascularized ; therefore, it receives the amount of nutrients and support needed for a successful recovery. Conversely, the inner two - thirds of the meniscus are called the `` white zone. '' This portion of the meniscus is not highly vascularized ; it receives its nourishment from only the synovial fluid via diffusion. Considering these facts, doctors consider different treatments to different kinds of tears : If the meniscus has to be removed ( menisectomy ) because of injury ( either because it can not heal or because the damage is too severe ), the patient has an increased risk of developing osteoarthritis in the knee later in life. If the meniscus is removed and there is no arthritis, there are now meniscus transplant options if the patient is young and has normal alignment. More chronic injury occurs with osteoarthritis, made worse by obesity and high - impact activity. The medial meniscus and the medial compartment are more commonly affected than the lateral compartment. See also Wikimedia Commons has media related to Medial meniscus. This article uses anatomical terminology ; for an overview, see Anatomical terminology. meniscus tear of meniscus cartilage unhappy triad meniscal cartilage replacement therapy Additional images This gallery of anatomic features needs cleanup to abide by the medical manual of style. Galleries containing indiscriminate images of the article subject are discouraged ; please improve or remove the gallery accordingly. ( June 2015 ) Right knee - joint, from the front, showing interior ligaments. Sagittal section of right knee - joint. Capsule of right knee - joint ( distended ). Posterior aspect. Normal medial meniscus Anterior view of knee. Right knee in extension. Deep dissection. Posterior view. Right knee in extension. Deep dissection. Posterior view. Knee and tibiofibular joint. Deep dissection. Anterior view. Knee joint. Deep dissection. Anterior view Knee joint. Deep dissection. Posterior view References This article incorporates text in the public domain from the 20th edition of Gray 's Anatomy ( 1918 ) ^ Jump up to : Platzer ( 2004 ), p 208 Jump up ^ Thieme Atlas of Anatomy ( 2006 ), p 399 Jump up ^ Platzer ( 2010 ), p 208 Jump up ^ Torn Cartilage ( Meniscus ) Jump up ^ The Meniscus Jump up ^ Meniscus Tear - Torn Cartilage Archived 2008 - 02 - 21 at WebCite Jump up ^ http://drpetre.com/injuries/common-knee-injuries/meniscal-tear-meniscus-injury/ Books Platzer, Werner ( 2004 ). Color Atlas of Human Anatomy, Vol. 1 : Locomotor System ( 5th ed. ). Thieme. ISBN 3 - 13 - 533305 - 1. Thieme Atlas of Anatomy : General Anatomy and Musculoskeletal System. Thieme. 2006. ISBN 1 - 58890 - 419 - 9. Blahd and Freddie ( 2010 ). `` Meniscus Repair ''. Healthwise Staff. Brindle, T ; Nyland, J ; Johnson, D.L. ( 2001 ). `` The meniscus : Review of basic principles with application to surgery and rehabilitation ''. Journal of athletic training. 36 ( 2 ) : 160 -- 9. PMC 155528. PMID 16558666. External links Anatomy figure : 17 : 07 - 06 at Human Anatomy Online, SUNY Downstate Medical Center lljoints at The Anatomy Lesson by Wesley Norman ( Georgetown University ) ( antkneejointopenflexed ) Medial Meniscus Tear Knee MR Joints and ligaments of the human leg Hip femoral ( iliofemoral pubofemoral ischiofemoral ) head of femur transverse acetabular acetabular labrum capsule zona orbicularis Knee Tibiofemoral Capsule Anterior meniscofemoral ligament Posterior meniscofemoral ligament extracapsular : popliteal oblique arcuate collateral medial / tibial fibular / lateral intracapsular : cruciate anterior posterior menisci medial lateral transverse anterolateral Patellofemoral Patellar ligament Infrapatellar fat pad Tibiofibular Superior tibiofibular anterior of the head of the fibula posterior of the head of the fibula Inferior tibiofibular Anterior tibiofibular Posterior tibiofibular Interosseous membrane of leg Foot Talocrural and ankle medial : medial of talocrural joint / deltoid anterior tibiotalar posterior tibiotalar tibiocalcaneal tibionavicular lateral : lateral collateral of ankle joint anterior talofibular posterior talofibular calcaneofibular Subtalar / talocalcaneal anterior / posterior lateral / medial interosseous Transverse tarsal Talocalcaneonavicular dorsal talonavicular plantar calcaneonavicular / spring bifurcated ( calcaneonavicular ) Calcaneocuboid dorsal calcaneocuboid long plantar plantar calcaneocuboid bifurcated ( calcaneocuboid ) Distal intertarsal Cuneonavicular plantar dorsal Cuboideonavicular plantar dorsal Intercuneiform plantar dorsal interosseous Other Tarsometatarsal / Lisfranc plantar dorsal Intermetatarsal / metatarsal plantar dorsal interosseous superficial transverse deep transverse Metatarsophalangeal plantar collateral Interphalangeal plantar collateral Arches Longitudinal Transverse Retrieved from `` https://en.wikipedia.org/w/index.php?title=Medial_meniscus&oldid=805427299 '' Categories : Wikipedia articles incorporating text from the 20th edition of Gray 's Anatomy ( 1918 ) Knee Hidden categories : Articles needing more detailed references Webarchive template webcite links Medicine infobox template using GraySubject or GrayPage Articles with gallery cleanup tags Talk Contents About Wikipedia فارسی Português Edit links This page was last edited on 15 October 2017, at 09 : 32. 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Question: where is the medial meniscus located in the knee
Answer: between the medial condyle of the femur and the medial condyle of the tibia