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Medial Collateral Ligament
The medial collateral ligament (MCL), or tibial collateral ligament (TCL), is one of the four major ligaments of the knee. It is on the medial (inner) side of the knee joint in humans and other primates. Its primary function is to resist outward turning forces on the knee. Structure It is a broad, flat, membranous band, situated slightly posterior on the medial side of the knee joint. It is attached proximally to the medial epicondyle of the femur immediately below the adductor tubercle; below to the medial condyle of the tibia and medial surface of its body. It resists forces that would push the knee medially, which would otherwise produce valgus deformity. The fibers of the posterior part of the ligament are short and incline backward as they descend; they are inserted into the tibia above the groove for the semimembranosus muscle. The anterior part of the ligament is a flattened band, about 10 centimeters long, which inclines forward as it descends. It is inserted into ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medial Epicondyle Of The Femur of the are attached to it.Platzer (2004), 9 206
Behind it, and proximal to the medial condyl ...
The medial epicondyle of the femur is an epicondyle, a bony protrusion, located on the medial side of the femur at its distal end. Located above the medial condyle, it bears an elevation, the adductor tubercle,Platzer (2004), p 192 which serves for the attachment of the superficial part, or "tendinous insertion", of the adductor magnus.''Thieme Atlas of Anatomy'' (2006), p 426 This tendinous part here forms an intermuscular septum which forms the medial separation between the thigh's flexors and extensors.tibial collateral ligament [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inferior Medial Genicular
The inferior genicular arteries (inferior articular arteries), two in number, arise from the popliteal beneath the gastrocnemius. On the inside of the knee, is the medial inferior genicular artery, and on the outer side is the lateral inferior genicular artery. See also * Patellar anastomosis The patellar network (circulatory anastomosis around the knee-joint, patellar anastomosis, genicular anastomosis, articular vascular network of knee or rete articulare genushttp://medical-dictionary.thefreedictionary.com/rete+articulare+genus) i ... References Arteries of the lower limb {{Portal bar, Anatomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prolotherapy
Prolotherapy, also called proliferation therapy, is an injection-based treatment used in chronic musculoskeletal conditions. It has been characterised as an alternative medicine practice. Medical uses A 2015 review found no evidence that prolotherapy is safe or effective for Achilles tendinopathy, plantar fasciosis, and Osgood–Schlatter disease. The quality of the studies was also poor. Another 2015 review assigned a strength of recommendation level A for Achilles tendinopathy and knee osteoarthritis and level B for lateral epicondylosis, Osgood–Schlatter disease, and plantar fasciosis. Level A recommendations are based on consistent and good-quality patient-oriented evidence while level B are based on inconsistent or limited-quality patient-oriented evidence. Low back pain A 2007 Cochrane review of prolotherapy in adults with chronic low-back pain found unclear evidence of effect. A 2009 review concluded the same for subacute low back pain. A 2015 review found consistent ev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guard (American Football)
In gridiron football, a guard (G), otherwise known as an offensive guard (OG), is a player who lines up between the center and the tackles on the offensive line of a football team on the line of scrimmage used primarily for blocking. Right guards (RG) is the term for the guards on the right of the offensive line, while left guards (LG) are on the left side. Guards are to the right or left of the center. The guard's job is to protect the quarterback from the incoming linemen during pass plays, as well as creating openings (holes) for the running backs to head through. Guards are automatically considered ineligible receivers, so they cannot intentionally touch a forward pass, unless it is to recover a fumble or is first touched by a defender or eligible receiver. Pulling guards Aside from speed blocking, a guard may also " pull"—backing out of his initial position and running behind the other offensive linemen to sprint out in front of a running back to engage a defens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Center (American Football)
Center or Centre (C) is a position in gridiron football. The center is the innermost lineman of the offensive line on a football team's offense. The center is also the player who passes (or " snaps") the ball between his legs to the quarterback at the start of each play. The importance of centers for a football team has increased, due to the re-emergence of 3–4 defenses. According to Baltimore Ravens general manager Ozzie Newsome, "you need to have somebody who can neutralize that nose tackle. If you don't, everything can get screwed up. Your running game won't be effective and you'll also have somebody in your quarterback's face on every play." Roles The center's first role is to pass the football to the quarterback. This exchange is called a snap. Most offensive schemes make adjustments based on how the defensive line and linebackers align themselves in relation to the offensive line, and what gaps they line up in. Because the center has an ideal view of the defensive forma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Football
American football (referred to simply as football in the United States and Canada), also known as gridiron, is a team sport played by two teams of eleven players on a rectangular field with goalposts at each end. The offense, the team with possession of the oval-shaped football, attempts to advance down the field by running with the ball or passing it, while the defense, the team without possession of the ball, aims to stop the offense's advance and to take control of the ball for themselves. The offense must advance at least ten yards in four downs or plays; if they fail, they turn over the football to the defense, but if they succeed, they are given a new set of four downs to continue the drive. Points are scored primarily by advancing the ball into the opposing team's end zone for a touchdown or kicking the ball through the opponent's goalposts for a field goal. The team with the most points at the end of a game wins. American football evolved in the United S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carve Turn
A carved turn is a skiing and snowboarding term for the technique of turning by shifting the ski or snowboard onto its edges. When edged, the sidecut geometry causes the ski (in the following, snowboard is implicit and not mentioned) to bend into an arc, and the ski naturally follows this arc shape to produce a turning motion. The carve is efficient in allowing the skier to maintain speed because, unlike the older stem Christie and parallel turns, the skis don't create drag by sliding sideways. Starting a carved turn requires the ski to be rotated onto its edge, which can be accomplished through angulation of the hips and knees applied to both skis, leading them to efficiently carve a naturally parallel turn. Carving turns are generally smoother and longer radius than either stemmed or parallel turns. Carving maintains the skis efficiently turning along the direction of travel as opposed to skidding at an angle across the direction of travel. For a given velocity, carving with sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skiing
Skiing is the use of skis to glide on snow. Variations of purpose include basic transport, a recreational activity, or a competitive winter sport. Many types of competitive skiing events are recognized by the International Olympic Committee (IOC), and the International Ski Federation (FIS). History Skiing has a history of almost five millennia. Although modern skiing has evolved from beginnings in Scandinavia, it may have been practiced more than 100 centuries ago in what is now China, according to an interpretation of ancient paintings. However, this continues to be debated. The word "ski" comes from the Old Norse word "skíð" which means to "split piece of wood or firewood". Asymmetrical skis were used in northern Finland and Sweden until at least the late 19th century. On one foot, the skier wore a long straight non-arching ski for sliding, and a shorter ski was worn on the other foot for kicking. The underside of the short ski was either plain or covered with ani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Valgus Stress
The valgus stress test or medial stress test is a test for damage to the medial collateral ligament of the knee. It involves placing the leg into extension, with one hand placed as a pivot Pivot may refer to: *Pivot, the point of rotation in a lever system *More generally, the center point of any rotational system *Pivot joint, a kind of joint between bones in the body *Pivot turn, a dance move Companies *Incitec Pivot, an Austra ... on the knee. With the other hand placed upon the foot applying an abducting force, an attempt is then made to force the leg at the knee into valgus. If the knee is seen to open up on the medial side, this is indicative of medial collateral ligament damage and may also indicate capsular or cruciate ligament laxity. There are two versions of this test: valgus at 0 degrees and valgus at 30 degrees. When performing the test at 30 degrees, the MCL is the primary stabilizer; the joint capsule is also tested. When tested at 0 degrees, the MCL, medial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atavism
In biology, an atavism is a modification of a biological structure whereby an ancestral genetic trait reappears after having been lost through evolutionary change in previous generations. Atavisms can occur in several ways; one of which is when genes for previously existing phenotypic features are preserved in DNA, and these become expressed through a mutation that either knocks out the dominant genes for the new traits or makes the old traits dominate the new one. A number of traits can vary as a result of shortening of the fetal development of a trait ( neoteny) or by prolongation of the same. In such a case, a shift in the time a trait is allowed to develop before it is fixed can bring forth an ancestral phenotype. Atavisms are often seen as evidence of evolution. In social sciences, atavism is the tendency of reversion. For example, people in the modern era reverting to the ways of thinking and acting of a former time. The word ''atavism'' is derived from the Latin ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adductor Magnus
Adductor may refer to: * One of the anatomical terms of motion Motion, the process of movement, is described using specific anatomical terms. Motion includes movement of organs, joints, limbs, and specific sections of the body. The terminology used describes this motion according to its direction relati ... * Adductor muscle (other) * Adductor canal {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medial Meniscus
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.Platzer (2004), p 208 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. 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 menis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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