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Topic: Lateral meniscus

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eMedicine - Discoid Meniscus : Article by Ralph Di Libero, MD One is the hypermobile or Wrisberg lateral meniscus, and the other is a misshapen or discoid form of an otherwise normal lateral meniscus. Knee radiograph of a 17-year-old athlete with a discoid lateral meniscus. Surgical therapy: Surgical treatment varies according to the type of lateral discoid meniscus. www.emedicine.com /orthoped/topic76.htm   (1534 words)

All About Meniscus Transplantation The meniscus is the soft, fibrous shock absorber that rests in the knee between the femur and the tibia. Meniscus transplantation involves taking a meniscus from a cadaver (someone who is recently deceased, otherwise known as "allograft" tissue) and transplanting it to the patient, sort of like changing shock absorbers in a car. For the medial meniscus, it must be noted that the anterior medial meniscus insertion varies considerably. www.stoneclinic.com /menre.htm   (1943 words)

Meniscus - Wikipedia, the free encyclopedia The knee contains a lateral meniscus and a medial meniscus, and both are cartilaginous tissues that provide structural integrity to the knee when it undergoes tension and torsion. A meniscus is a curve in the surface of a liquid and is produced in response to the surface of the container or another object. A convex meniscus occurs when the molecules of the liquid repel the molecules of the container or object. en.wikipedia.org /wiki/Meniscus   (360 words)

Knee Meniscus Injury There is a lateral meniscus on the outside of the knee and a medial meniscus on the inside of the knee and they are both attached to the tibia. The medial meniscus may also be injured with the leg straight and the lower leg forced to rotate towards the midline of the body. The most common position of injury for the medial meniscus is to have the knee bent with the lower leg faced into rotation away from the midline of the body. www.ovphysio.com /injuries/meniscus.htm   (566 words)

Discoid Meniscus -- eCureMe.com There are two meniscus within the knee joint: lateral and medical. Meniscus is C-shaped cartilage located between the shin bone and thigh bone. The meniscus of a newborn baby is a thick disc-like mass. www.ecureme.com /emyhealth/data/Discoid_Meniscus.asp   (126 words)

Hot Topics The torn non-discoid meniscus usually presents with medial or lateral pain, associated with activity and relieved by rest, with a history of trauma to the knee. The aetiology of the discoid meniscus may be failure of resorption of the central portion of the meniscus during development; or secondary to instability of the meniscus during development, subsequent to failure of attachment of the meniscotibial (coronary) ligament of the posterior horn (type III). Symptomatic patients with a type I or II discoid meniscus may be treated with arthroscopic debridement and contouring of the central portion, leaving a rim of 6-8mm. www.worldortho.com /hot_topics/meniscal.html   (858 words)

Orthoseek Orthopedic Topics Discoid Meniscus Every knee has a medial and lateral meniscus which are C-shaped pieces of fibrocartilage that absorb stress and act as cushions between the bones at the knee. In most cases where the meniscus is still generally intact, a partial excision to preserve the cushioning function may be sufficient. Where the discoid meniscus is severely damaged, total excision of the meniscus may be necessary. www.orthoseek.com /articles/discoid.html   (289 words)

David's Discoid Meniscus This is a side view of the lateral discoid meniscus. Note that the meniscus extends all the way across the compartment in contrast to the short triangular shape of the medial meniscus seen on the left side of this image. David underwent subsequent arthroscopy of the knee and the discoid meniscus indeed had a horizontal tear in the posterior aspect. www.orthoassociates.com /Discoid.htm   (340 words)

eMedicine - Meniscus Injuries : Article by Bradley S Baker The medial meniscus, with excursion of approximately 5 mm, is half as mobile as the lateral meniscus, whose mobility may exceed 10 mm. Peripherally, the medial meniscus is continuously attached to the joint capsule, with the middle portion being more firmly attached via connection with fibers of the deep medial collateral ligament. Various zones of the meniscus are described based on the blood supply; the red zone is the well-vascularized periphery, the red-white zone is the middle portion with vascularity peripherally but not centrally, and the white zone is the central avascular portion. www.emedicine.com /sports/topic160.htm   (1615 words)

Diagnosing a Meniscus Tear Warren I. Hammer, MS, DC, DABCO If there is an associated anterior cruciate ligament deficiency, a lateral meniscus tear can only be diagnosed by physical examination in eight percent of the cases and a medial meniscus tear in 32 percent of the cases. In an acute situation, it is difficult to immediately determine if the meniscus is involved, especially if there is associated collateral ligamentous sprain. Therefore, during meniscus testing, if the pain or snapping occurs near maximum knee flexion, the posterior horns are probably involved, and if the pain or clunk occurs toward knee extension, the middle to anterior portion of the meniscus is probably involved. www.chiroweb.com /archives/10/14/27.html   (1296 words)

Dislocated kneecap and meniscus - common knee injury among athletes The lateral meniscus is on the outer side of the knee and the medial meniscus on the inside. The meniscus is a wedge of cartilage in a joint. Severe meniscus tears may be slow to heal (up to a year in some cases) but very small ones will heal within weeks. hcd2.bupa.co.uk /fact_sheets/html/Dislocated_kneecap.html   (1008 words)

Meniscus meniscus on each side of the joint...medial and lateral. meniscus is flat and C-shaped, partially enclosing the where a meniscus from a human tissue bank is surgically members.tripod.com /GeraldY/meniscus.html   (292 words)

Meniscus Tear -- Topic Overview Each knee has two C-shaped menisci (plural of meniscus): a lateral meniscus at the outer side of the knee and a medial meniscus at the inner side of the knee. A meniscus tear is usually caused by a twisting or pivoting motion, often with the foot planted and the knee partially flexed (for example, when lifting or playing tennis). A meniscus tear is a common knee joint injury. www.webmd.com /hw/sports_and_fitness/te7346.asp?lastselectedguid={5FE84E90-BC77-4056-A91C-9531713CA348}   (196 words)

lateral meniscus The knee contains a lateral meniscus and a medial meniscus, and both are cartilaginous tissues that provide structural integrity to the knee when it undergoes tension and torsion. In sports and orthopedics, people will sometimes speak of "meniscus surgery," or a "torn meniscus," and be referring to an injury to one of these two membranes. Also, the meniscus is a term used to refer to one of two parts of the human knee. www.33beat.com /lateral_meniscus.html   (238 words)

Oblique Meniscomeniscal Ligament: Another Potential Pitfall for a Meniscal Tear-Anatomic Description and Appearance at MR Imaging in Three Cases -- Sanders et al. 213 (1): 213 -- Radiology The ligament (arrow in e) is seen in the posterior aspect of the knee as it passes behind the anterior cruciate ligament (ACL) and inserts into the posterior horn of the lateral meniscus. Line drawing shows the normal anatomy of the medial oblique meniscomeniscal ligament (lig) as it courses from the anterior horn of the medial (Med) meniscus to the posterior horn of the lateral (Lat) meniscus. On multiple contiguous coronal images (not shown), this structure could be traced from the anterior horn of the medial meniscus to the posterior horn of the lateral meniscus. radiology.rsnajnls.org /cgi/content/full/213/1/213   (3314 words)

knee.html The root of the posterior horn lateral meniscus can be particularly problematic because of magic angle phenomenon [2], while the anterior horn lateral meniscus can often normally show Grade 2 signal changes near the tibial attachment [3]. Shankman S, Beltran J. Anterior Horn of the lateral meniscus; Another potential pitfall in the MR imaging evaluation of the knee. This indistinct area of increased signal in the posterior horn of the medial meniscus does approach the superior surface of the meniscus (arrow) on one sagittal image, and might be regarded as a 'possible' tear. www.radsci.ucla.edu:8000 /ms/y1/knee.html   (3314 words)

Meniscofemoral Ligaments In all 20 knees, the posterior horn of the lateral meniscus was connected to the intercondylar area of the femur by one or two meniscofemoral ligaments that were often difficult to find because of abundant fatty tissue. We found that the posterior horn of the lateral meniscus is attached to the femur by at least one ligament in 100 % of the knees. We found the posterior horn of the lateral meniscus to be connected to the femur in 100 % of the knees. ams.cu.edu.tr /September2000Vol9No3/belgin.html   (1051 words)

untitled The ligament of Humphry is a normal accessory meniscofemoral ligament that is closely related to the anterior margin of the PCL (it extends from the posterior horn of the lateral meniscus to the lateral aspect of the medial femoral condyle). The MR examinations of 29 patients affected by traumatic lesions of the knee with arthroscopically proved bucket-handle tears (25 of the medial and 4 of the lateral meniscus) were retrospectively reviewed. 5 - Pedunculated fragment of the anterior horn of the meniscus. www.unipa.it /~radpa/eido/e5/mk574.htm   (1051 words)

eMedicine - Knee, Posterior Cruciate Ligament Injuries (MRI) : Article by Michael R Aiello, MD Their function is to pull the posterior horn of the lateral meniscus anterior and medial during flexion, balancing the action of the popliteus muscle, which, in addition to the MFL, attaches to the posterior horn of the lateral meniscus. Proton-dense coronal images demonstrate the normal ligament of Wrisberg originating from the medial horn of the lateral meniscus and inserting at the lateral aspect of the medial femoral condyle near the femoral origin of the posterior cruciate ligament. The main innervation of the PCL is from the posterior articular nerve, a branch of the posterior tibial nerve. www.emedicine.com /radio/topic854.htm   (6433 words)

OKO - Meniscal Tears - Pathophysiology and Etiology - Classification Radial split tears are more frequently noted in the lateral meniscus; if they extend to the periphery, they have the potential to heal. Horizontal cleavage pattern tears are also more frequently noted in the lateral meniscus and may be associated with lateral meniscal cysts. Meniscus tears that are stable and less than 1 cm in length can be left alone, whereas those that are unstable whould be resected or repaired. www5.aaos.org /oko/sample/meniscal/pathophysiology/classification.cfm   (196 words)

III. Syndesmology. 7b. The Knee-joint. Gray, Henry. 1918. Anatomy of the Human Body. The lateral meniscus ( meniscus lateralis; external semilunar fibrocartilage) is nearly circular and covers a larger portion of the articular surface than the medial one. The Fibular Collateral Ligament ( ligamentum collaterale fibulare; external lateral or long external lateral ligament) (Fig. —In front, and at the sides, is the Quadriceps femoris; laterally the tendons of the Biceps femoris and Popliteus and the common peroneal nerve; medially, the Sartorius, Gracilis, Semitendinosus, and Semimembranosus; behind, the popliteal vessels and the tibial nerve, Popliteus, Plantaris, and medial and lateral heads of the Gastrocnemius, some lymph glands, and fat. www.bartleby.com /107/93.html   (196 words)

Temporomandibular and Orofacial Disorders: A Functional Perspective Lateral pterygoid muscle and its relationship to the meniscus of the temporomandibular joint. The superior lateral pterygoid originates from the infratemporal surface of the greater wing of the sphenoid and attaches to the disc (40%) and condyle (60%). The inferior lateral pterygoid originates at the outer surface of the lateral pterygoid plate and attaches to the neck of the condyle. www.chiroweb.com /archives/16/12/04.html   (196 words)

To Investigate the Anatomy and Function of the Popliteus Muscle The popliteus muscle is described as a flat, triangular muscle with three origins; the lateral femoral condyle, lateral meniscus and arcuate popliteal ligament (Williams et al 1995). However, the attachment of the popliteus to the lateral meniscus has been documented in other studies (Basmajian and Lovejoy 1971, Griffin 1984, Harner et al 1998, La Prade et al 2000, Simonian et al 1997). To Investigate the Anatomy and Function of the Popliteus Muscle physiotherapy.curtin.edu.au /resources/educational-resources/pgdissections/knee/popliteus_2002   (196 words)

80mast.htm The caudal horn of the lateral meniscus is also attached to the lateral aspect of the medial femoral condyle by means of the femoral ligament of the lateral meniscus. The caudal cruciate ligament functions to prevent caudal displacement of the tibia on the femur and, in conjunction with cranial cruciate ligament, limits excessive internal rotation of the tibia on the femur. The caudal cruciate ligament passes caudodistally to the medial aspect of the popliteal notch of the tibia( Fig. cal.vet.upenn.edu /saortho/chapter_80/80mast.htm   (196 words)

Journal of Bone and Joint Surgery: Meniscal movement: An in-vivo study using dynamic MRI Our findings showed strong evidence to suggest that the movement of the anterior horn of the lateral meniscus was greater when the knee was weight-bearing (p = 0.005). There also appeared to be a difference in the change in height of the anterior horn of the lateral meniscus between weight-bearing and non-weight-bearing (p = 0.036). In non-weight-bearing, the anterior horn of the medial meniscus moves 5.4 mm and the posterior horn 3.8 mm, with 3.3 mm of radial displacement. www.findarticles.com /p/articles/mi_qa3767/is_199901/ai_n8831613   (196 words)

AAOS On-Line Service Academy News - Section B - Clinical exam, MRI equal in diagnosing ACL tears Twenty-six males and 14 female patients, who had a total of 18 medial meniscus tears, 14 lateral meniscus tears and 19 anterior cruciate tears, were in the study. The accuracy of MRI was 75 percent for medial meniscal tears, 65 percent for lateral mensical tears and 87 percent for anterior cruciate ligament tears. Giacobetti reported the accuracy of a clinical examination was 90 percent for medial meniscal tears, 88 percent for lateral meniscal tears and 95 percent for anterior cruciate ligament tears. www.aaos.org /wordhtml/97news/compare1.htm   (331 words)

eMedicine - Knee, Posterior Cruciate Ligament Injuries (MRI) : Article by Michael R Aiello, MD The course of the normal ligament of Humphrey is indicated (black arrow) as it progresses from its origin at the posterior medial portion of the lateral meniscus (A), in front of the lower portion of the posterior cruciate ligament (B), the mid portion (C), and the proximal portion (D). Proton-dense coronal images demonstrate the normal ligament of Wrisberg originating from the medial horn of the lateral meniscus and inserting at the lateral aspect of the medial femoral condyle near the femoral origin of the posterior cruciate ligament. The main innervation of the PCL is from the posterior articular nerve, a branch of the posterior tibial nerve. www.emedicine.com /radio/topic854.htm   (6433 words)

eMedicine - Intercondylar Eminence Fractures : Article by Brett D Owens, MD The ACL has a broad insertion onto the eminence that fans out and coalesces with the attaching fibers of the anterior horn of the medial meniscus anteriorly and the anterior horn of the lateral meniscus posteriorly. Burstein DB, Viola A, Fulkerson JP: Entrapment of the medial meniscus in a fracture of the tibial eminence. The avulsed tibial eminence can be held by sutures to the medial meniscus, sutures through a drill hole, K-wires, or a cannulated screw (depending upon the level of comminution). www.emedicine.com /orthoped/topic155.htm   (1972 words)

III. Syndesmology. 7b. The Knee-joint. Gray, Henry. 1918. Anatomy of the Human Body. The lateral condyle of the femur is brought almost to rest by the tightening of the anterior cruciate ligament; it moves, however, slightly forward and medialward, pushing before it the anterior part of the lateral meniscus. Into the groove on the medial condyle is fitted the anterior part of the medial meniscus, while the anterior cruciate ligament and the articular margin in front of the medial process of the tibial intercondyloid eminence are received into the forepart of the intercondyloid fossa of the femur. Behind the capsule consists of vertical fibers which arise from the condyles and from the sides of the intercondyloid fossa of the femur; the posterior part of the capsule is therefore situated on the sides of and in front of the cruciate ligaments, which are thus excluded from the joint cavity. www.bartleby.com /107/93.html   (1972 words)

Ligaments of Humphrey and Wrisberg - Wheeless' Textbook of Orthopaedics - arises from the posterior horn of the lateral meniscus, runs anterior to the to the PCL and inserts at the - extends from the posterior horn of lateral meniscus to medial femoral condyle; The meniscofemoral ligaments: secondary restraints to the posterior drawer. www.wheelessonline.com /ortho/ligaments_of_humphrey_and_wrisberg   (263 words)

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