meniscus

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meniscus

 [mĕ-nis´kus] (L.)
something of crescent shape, as the concave or convex surface of a column of liquid in a pipet or medication cup, or a crescent-shaped fibrocartilage (semilunar cartilage) in the knee joint. adj., adj menis´cal.
Measuring medication at the meniscus. From Lammon et al., 1996.

me·nis·cus

, pl.

me·nis·ci

(mĕ-nis'kŭs, mĕ-nis'sī),
1. Synonym(s): meniscus lens
2. A crescentic intraarticular fibrocartilage found in certain joints.
3. A crescentic fibrocartilaginous structure of the knee and the acromioclavicular, sternoclavicular, and temporomandibular joints.
[G. mēniskos, crescent]

meniscus

/me·nis·cus/ (mĕ-nis´kus) pl. menis´ci   [L.] something of crescent shape, as the concave or convex surface of a column of liquid in a pipet or buret, or a crescent-shaped cartilage in the knee joint.menis´cal
tactile meniscus  one of the small, cup-shaped nerve endings found in the deep epidermis, in hair follicles, and in the hard palate; they function as touch receptors.

meniscus

(mə-nĭs′kəs)
n. pl. me·nisci (-nĭs′ī, -kī, -kē) or me·niscuses
1. A crescent-shaped body.
2. A concavo-convex lens.
3. The curved upper surface of a nonturbulent liquid in a container that is concave if the liquid wets the container walls and convex if it does not.
4. A cartilage disk that acts as a cushion between the ends of bones that meet in a joint.

me·nis′cal (-kəl), me·nis′cate′ (-kăt′)(-koid′)(mĕn′ĭs-koid′l), me·nis′coid′ (-koid′)(mĕn′ĭs-koid′l), men′is·coi′dal (mĕn′ĭs-koid′l) adj.

meniscus

[minis′kəs] pl. menisci
Etymology: Gk, meniskos, crescent
1 the interface between a liquid and air.
2 a lens with both convex and concave aspects.
3 a curved, fibrous cartilage in the knees and other joints. See also meniscectomy.

meniscus

Either of two crescent-shaped cartilages atop the tibial plates that stabilise the knee, absorb shock, assist joint lubrication and limit joint flexion/extension.

me·nis·cus

, pl. menisci (mĕ-niśkŭs, -kī) [TA]
1. Synonym(s): meniscus lens.
2. [TA] Any crescent-shaped structure.
3. A crescent-shaped fibrocartilaginous structure of the knee, theacromio- and sternoclavicular and the temporomandibular joints.
4. The crescentic curvature of the surface of a liquid standing in a narrow vessel (e.g., pipette, burette).
[G. mēniskos, crescent]

meniscus

  1. the top of a liquid column made either concave or convex by capillarity.
  2. an intervertebral disc of fibro-cartilage.
The upper end of the left tibia showing the semilunar cartilages and the cruciate ligaments (cut).

meniscus

syn semilunar cartilage pl menisci flattened crescent-shaped pieces of cartilage inside the knee joint (one medial, one lateral), wedged between the articular surfaces (condyles) of the femur and the tibia and thickest around their convexity towards the outside of the joint. Act as shock absorbers and increase joint stability. meniscal injury is most common in contact sports as a result of trauma, especially with twisting or rotational stress at the joint - especially medial damage due to the attachment of the medial collateral ligament resulting in combined injury. Most tears occur in the outer border of the meniscus, which has a better blood supply and is thus more easily repaired, but cartilage repair is not favoured by professional sportsmen due to the time (and finance) lost from sport in the extended rehabilitation period. Many opt for removal of the torn fragment - partial meniscectomy - with its quicker return to action. Surgical treatment aims to minimize the amount of meniscus removed to limit the extent of later osteoarthritis. Sometimes a tear can heal spontaneously. It may result in the development of a cyst or a fragment may break off, forming a loose body inside the joint; either of these is likely to require surgical removal.

me·nis·cus

, pl. menisci (mĕ-niskŭs, -kī) [TA]
1. [TA] Any crescent-shaped structure.
2. A crescent-shaped fibrocartilaginous structure of the knee, the acromio- and sternoclavicular and the temporomandibular joints.
3. The crescentic curvature of the surface of a liquid standing in a narrow vessel.
Synonym(s): meniscus lens.
[G. mēniskos, crescent]

meniscus

(mənis´kəs),
n the cartilaginous intracapsular disc interposed between the mandibular condyle and the glenoid fossa of the temporal bone at the temporomandibular joint.

meniscus

pl. menisci [L.]
1. something of crescent shape, such as the concave or convex surface of a column of liquid in a pipette or burette.
2. one of a pair of crescent-shaped fibrocartilages (semilunar cartilages) in the stifle joint that provide stability while permitting both flexion and rotation of the joint.

meniscus tear
a common injury in dogs with rupture of the cranial cruciate ligament and the accompanying instability of the stifle joint. Most tears occur in the caudal horn of the medial meniscus.

Patient discussion about meniscus

Q. I am scheduled for scope surgery for a torn meniscus on my knee and what is the duration for recovery? Has anyone had this surgery for a torn meniscus? How did you deal with this recovery?

A. The recovery process is individual, and you cannot predict it in advance. I know someone who has done it and was able to go back to exercising regularly after 2 months. I would think the recovery from the surgery itself is a matter of few weeks until you can walk properly, however you should still give your knee a break and rest for a while after.

More discussions about meniscus
References in periodicals archive ?
Cartilage signal and morphology (0-6 points), subarticular bone marrow abnormality (0-3 points), cysts (0-3 points) and bone attrition (0-3 points), marginal osteophytes (0-7 points), medial and lateral meniscal destruction (0-6 points), anterior and posterior cruciate ligament (0-1 point), medial and lateral collateral ligament integrity (0-1 point), synovitis (0-3 points), loose bodies (0-3 points), and periarticular cysts/bursae (0-3 points).
Patients below 15 years and patient above 35 years were excluded, because this population group can show abnormal meniscal and ligament signal without tear secondary to vascularity and degenerative changes in respective age groups.
Anterior region--anterior meniscal horn contained, 2.
Conclusion: Mostly the right knees undergo meniscal tears in young males engaged in physical activities including sports.
Degenerative meniscal lesions are due to wear and are generally associated with varying degrees of osteoarthritis.
The most important finding of the present study was that there was a significant difference in the condylar prominence ratio between the two groups, indicating a relationship between the condylar cutoff sign and discoid lateral meniscal tear.
A prototype version of the cell bandage was tested in five patients, aged between 18 and 45, with white-zone meniscal tears.
Our results should encourage clinicians and middle aged patients with degenerative meniscal tear and no radiographic evidence of osteoarthritis to consider supervised structured exercise therapy as a treatment option," University of Helsinki researcher Teppo Jarvinen said.
Comparing these associated injuries among different age groups, it was found that the patients aged between 31 and 40 years had associated medial meniscal injury significantly more often than the patients aged between 11 and 30 years (p<0.
About 80% of the patients in both groups did see a clinically meaningful improvement--but if the improvement from an exercise and physical therapy regimen matched surgical outcomes, why resort to meniscal tear arthroscopy?
Sometimes we have no choice but to perform a MAT, especially when a meniscal repair or a meniscectomy are not a viable option anymore.
And the middle and posterior portions of the lateral meniscus were degeneratively torn and almost no meniscal substance was left in these portions.