Cruciate ligament, anterior
The knee joint is surrounded by a joint capsule with ligaments strapping the inside and outside of the joint (collateral ligaments) as well as crossing within the joint (cruciate ligaments). These ligaments provide stability and strength to the knee joint. The anterior cruciate ligament (cruciate means shaped like a cross) is in the front, as indicated here: {{}}The knee is a joint which has three parts. The thigh bone (femur) meets the large shin bone (tibia) forming the main knee joint. This joint has an inner (medial) and an outer (lateral) compartment. The kneecap (patella) and the femur form a third joint, called the patellofemoral joint. The meniscus is a c-shaped cartilage pad between the two joints formed by the femur and tibia. The meniscus acts as a smooth surface for the joint to move on. The knee joint is surrounded by fluid- filled sacs called bursae, which serve as gliding surfaces that reduce friction of the tendons. Below the kneecap, there is a large tendon (patellar tendon) which attaches to the front of the tibia bone. There are large blood vessels passing through the area behind the knee (referred to as the popliteal space). The large muscles of the thigh move the knee. In the front of the thigh the quadriceps muscles extend the knee joint. In the back of the thigh, the hamstring muscles flex the knee. The knee also rotates slightly under guidance of specific muscles of the thigh. The knee functions to allow movement of the leg and is critical to normal walking. The knee flexes (bends) normally to a maximum of 135 degrees and extends (straightens) to 0 degrees. The bursae, or fluid- filled sacs, serve as gliding surfaces for the tendons to reduce the force of friction as these tendons move. The knee is a weight-bearing joint. Each meniscus serves to evenly load the surface during weight- bearing and also adds in disbursing joint fluid for joint lubrication.

Medical dictionary. 2011.

Look at other dictionaries:

  • Anterior cruciate ligament — Ligament: Anterior cruciate ligament Diagram of the right knee. (Anterior cruciate ligament labeled at center left.) Latin ligamentum cruciatum anterius …   Wikipedia

  • Anterior cruciate ligament reconstruction — (ACL reconstruction) is a surgical tissue graft replacement of the anterior cruciate ligament, located in the knee, to restore its function after anterior cruciate ligament injury. The torn ligament is removed from the knee before the graft is… …   Wikipedia

  • Cruciate ligament of atlas — Ligament: Cruciate ligament of atlas Membrana tectoria, transverse, and alar ligaments. ( Transverse ligament and vertical portion visible intersecting at center.) Latin ligamentum cruciforme atlantis …   Wikipedia

  • anterior cruciate ligament — n a cruciate ligament of each knee that is attached in front to the more medial aspect of the tibia, that passes upward, backward, and laterally through the middle of the knee crossing the posterior cruciate ligament to attach to the femur, that… …   Medical dictionary

  • Cruciate ligament (disambiguation) — Cruciate ligaments (from the Latin for cross ) are found in several parts of the body. These include:* anterior cruciate ligament of the knee * posterior cruciate ligament of the knee * cruciate ligament of the densEtymologyIn Classical Latin the …   Wikipedia

  • cruciate ligament — n any of several more or less cross shaped ligaments: as a) either of two ligaments in the knee joint which cross each other from femur to tibia: (1) ANTERIOR CRUCIATE LIGAMENT (2) POSTERIOR CRUCIATE LIGAMENT b) a complex ligament made up of the… …   Medical dictionary

  • Cruciate ligament of knee — can refer to: * Anterior cruciate ligament * Posterior cruciate ligament …   Wikipedia

  • Cruciate ligament — Illustration of the ligaments of the knee, including the anterior and posterior cruciate ligaments Cruciate ligaments (also cruciform ligaments) are pairs of ligaments arranged like a letter X.[1] They occur in several joints of the body, such as …   Wikipedia

  • Anterior cruciate ligament injury — Infobox Disease Name = PAGENAME Caption = Diagram of the right knee Width = 300 DiseasesDB = ICD10 = ICD10|S|83|5|s|80 ICD9 = ICD9|844.2 ICDO = OMIM = MedlinePlus = eMedicineSubj = pmr eMedicineTopic = 3 MeshID = An injury to the anterior… …   Wikipedia

  • Cruciate ligament, posterior — The knee joint is surrounded by a joint capsule with ligaments strapping the inside and outside of the joint (collateral ligaments) as well as crossing within the joint (cruciate ligaments). These ligaments provide stability and strength to the… …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”