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Information about 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.
Latinmeniscus medialis
subject #93 343
The medial meniscus (internal semilunar fibrocartilage) is nearly semicircular in form, a little elongated from before backward, and broader behind than in front;

Attachments

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.

Function

The medial meniscus, along with the lateral meniscus, separate the tibia and femur.

They serve as shock absorbers in the knee and increase the contact area between the tibia and femur, reducing the peak contact force experienced.

They also reduce friction between the two bones to allow smooth movement in the knee.

Injury

Acute injury to the medial meniscus fairly often accompanies an injury to the ACL or anterior cruciate ligament. As with much cartilage, the medial meniscus is slow to heal. Damage to the outer 1/3 of the meniscus will often fully heal, but the inner 2/3 of the medial meniscus has a limited blood supply and thus limited healing ability. Large tears to the outer portions of the meniscus may be repaired surgically. If the meniscus has to be removed (menisectomy) because of injury (either because it cannot heal or because the damage is too severe) the patient has an increased risk of arthritis in the knee later in life.[1][2][3]

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

Additional images


Right knee-joint, from the front, showing interior ligaments.

Sagittal section of right knee-joint.

Capsule of right knee-joint (distended). Posterior aspect.


External links

References

1. ^ [1]
2. ^ [2]
3. ^ [3]


This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

 •  • [ e]
Joints and ligaments of lower limbs
Coxal/hipiliofemoral - pubofemoral - ischiofemoral - head of femur - transverse acetabular
Knee-jointpatellar - popliteal (oblique, arcuate) - collateral (medial/tibial, lateral/fibular) - cruciate (anterior, posterior) - menisci (medial, lateral)
TibiofibularSuperior tibiofibular: anterior of the head of the fibula - posterior of the head of the fibula
Inferior tibiofibular: anterior of the lateral malleolus - posterior of the lateral malleolus
Talocrural/ankledeltoid - external lateral of the ankle-joint (anterior talofibular, posterior talofibular, calcaneofibular)
Foot - intertarsalSubtalar/talocalcaneal: anterior talocalcaneal - posterior talocalcaneal - lateral talocalcaneal - medial talocalcaneal - interosseous talocalcaneal
Talocalcaneonavicular: dorsal talonavicular
Calcaneocuboid: dorsal calcaneocuboid - bifurcated - long plantar - plantar calcaneocuboid
Transverse tarsal: plantar calcaneonavicular/spring
Foot - otherCuneonavicular, Cuboideonavicular, Intercuneiform and cuneocuboid, Tarsometatarsal/Lisfranc, Intermetatarsal, Metatarsophalangeal, Interphalangeal
Arches of the foot (Longitudinal, Transverse)
tibia is the larger of the two bones in the leg below the knee in vertebrates.

In humans

The tibia or shin bone, in human anatomy, is found medial (towards the middle) and anterior (towards the front) to the other such bone, the fibula.
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A: The bottom of a concave meniscus.
B: The top of a convex meniscus.]] Meniscus, plural: menisci, from the Greek for "crescent", is a curve in the surface of a liquid and is produced in response to the surface of the container or another
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In human anatomy, the knee is the lower extremity joint connecting the femur and the tibia. Since in humans the knee supports nearly the entire weight of the body, it is the joint most vulnerable both to acute injury and to the development of osteoarthritis.
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Latin}}} 
Official status
Official language of: Vatican City
Used for official purposes, but not spoken in everyday speech
Regulated by: Opus Fundatum Latinitas
Roman Catholic Church
Language codes
ISO 639-1: la
ISO 639-2: lat
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White fibrocartilage consists of a mixture of white fibrous tissue and cartilaginous tissue in various proportions; to the former of these constituents it owes its flexibility and toughness, and to the latter its elasticity.
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The anterior intercondyloid fossa (or intercondylar area) is the location where the anterior cruciate ligament attaches to the tibia.

External links

  • Norman/Georgetown lljoints ( topoftibia )

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tibia is the larger of the two bones in the leg below the knee in vertebrates.

In humans

The tibia or shin bone, in human anatomy, is found medial (towards the middle) and anterior (towards the front) to the other such bone, the fibula.
..... Click the link for more information.
The anterior cruciate ligament (or ACL) is one of the four major ligaments of the knee.

It connects from a posterio-lateral part of the femur to an anterio-medial part of the tibia. These attachments allow it to resist forces pushing the tibia forward relative to the femur.
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posterior intercondyloid fossa (or intercondylar area), which gives attachment to part of the posterior cruciate ligament of the knee-joint.

External links

  • Norman/Georgetown lljoints ( topoftibia )

..... Click the link for more information.
The lateral meniscus (external semilunar fibrocartilage) is nearly circular and covers a larger portion of the articular surface than the medial meniscus.

It is grooved laterally for the tendon of the Popliteus, which separates it from the fibular collateral ligament.
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The posterior cruciate ligament (or PCL) is one of the four major ligaments of the knee. It connects the posterior intercondylar area of the tibia to the medial condyle of the femur.
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tibia is the larger of the two bones in the leg below the knee in vertebrates.

In humans

The tibia or shin bone, in human anatomy, is found medial (towards the middle) and anterior (towards the front) to the other such bone, the fibula.
..... Click the link for more information.
The femur or thigh bone is the longest, most voluminous, and strongest bone of mammalian bodies. It forms part of the hip and part of the knee.

The word femur is Latin for thigh.
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A shock absorber in common parlance (or damper in technical use) is a mechanical device designed to smooth out or damp a sudden shock impulse and dissipate kinetic energy. It is analogous to a resistor in an electric RLC circuit.
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The anterior cruciate ligament (or ACL) is one of the four major ligaments of the knee.

It connects from a posterio-lateral part of the femur to an anterio-medial part of the tibia. These attachments allow it to resist forces pushing the tibia forward relative to the femur.
..... Click the link for more information.
Osteoarthritis
Classification & external resources

ICD-10 M 15. -M 19. , M 47.
ICD-9 715

OMIM 165720
DiseasesDB 9313
MedlinePlus 000423
eMedicine med/1682   orthoped/427 pmr/93 radio/492
MeSH D010003


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Obesity
Classification & external resources

Silhouettes representing healthy, overweight, and obese.
ICD-10 E 66.
ICD-9 278

DiseasesDB 9099
MedlinePlus 003101
eMedicine med/1653  

MeSH C23.888.144.699.
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Cartilage is a type of dense connective tissue. It is composed of collagen fibers and/or elastin fibers, and can supply smooth surfaces for the movement of articulating bones.
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unhappy triad (or terrible triad, or O'Donoghue's triad[1]) is an injury to the knee. It commonly occurs in contact sports (such as American football).
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The State University of New York Health Science Center at Brooklyn, better known as SUNY Downstate Medical Center, is an academic medical center and is the only one of its kind in the Borough of Brooklyn in New York City.
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eMedicine is an online clinical medical knowledge base that was founded in 1996 by Scott Plantz and Richard Lavely, two medical doctors. It was sold to WebMD in January 2006.
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Public domain comprises the body of knowledge and innovation (especially creative works such as writing, art, music, and inventions) in relation to which no person or other legal entity can establish or maintain proprietary interests within a particular legal jurisdiction.
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Henry Gray's Anatomy of the Human Body (or Gray's Anatomy as it has commonly been shortened) is an English-language human anatomy textbook widely regarded as a classic work on the subject.
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Released October 31, 2007
Genre J-Pop
Length N/A
Label Geneon
Producer(s) I've Sound

Mami Kawada singles chronology

Get my way!
(2007) JOINT
(2007)

JOINT
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In anatomy, the term ligament is used to denote three different types of structures:[1]
  1. Fibrous tissue that connects bones to other bones. They are sometimes called "articular ligaments"[2], "fibrous ligaments", or "true ligaments".

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In common usage, a human leg is the lower limb of the body, extending from the hip to the ankle, and including the thigh, the knee, and the cnemis.[1] The largest bone in the human body, the femur, is in the leg.
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hip is the bony projection of the femur which is known as the greater trochanter, and the overlying muscle and fat. The hip joint is the joint between the femur and acetabulum of the pelvis and its primary function is to support the weight of the body in both static
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The iliofemoral ligament (Y-ligament; ligament of Bigelow) is a band of great strength which lies in front of the hip joint; it is intimately connected with the joint capsule, and serves to strengthen the joint by resisting hyperextension.
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The pubofemoral ligament (pubocapsular ligament) is a ligament on the inferior side of the of the hip joint.

This ligament is attached, above, to the obturator crest and the superior ramus of the pubis; below, it blends with the capsule and with the deep surface of
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The ischiocapsular ligament (ischiofemoral ligament, ischiocapsular band; ligament of Bertin) consists of a triangular band of strong fibers on the posterior side of the hip joint.
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This article is copied from an article on Wikipedia.org - the free encyclopedia created and edited by online user community. The text was not checked or edited by anyone on our staff. Although the vast majority of the wikipedia encyclopedia articles provide accurate and timely information please do not assume the accuracy of any particular article. This article is distributed under the terms of GNU Free Documentation License.
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