cruciate ligaments


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cru·ci·ate lig·a·ments

(krū'shē-āt lig'ă-mĕnts)
Major ligaments that crisscross the knee in the anteroposterior direction, providing stability in that plane.
See also: Lachman test

cruciate ligaments

two intracapsular ligaments of the knee, forming an X-shape, linking the femur to the tibia, strong but not elastic, which are crucial for the stability of the knee joint. The anterior cruciate ligament runs upwards, backwards and laterally from the front of the upper end of the tibia to attach to the medial aspect of the lateral femoral condyle; it limits forward movement of the tibia relative to the femur and tightens with extension at the knee. It is short and thick with a poor blood supply. The posterior cruciate ligament arises from the posterior intercondylar area of the tibia and runs forwards, upwards and medially to attach to the anterolateral surface of the medial femoral condyle. It limits backwards movement of the tibia relative to the femur and tightens with flexion at the knee. cruciate ligament injury (especially anterior) can result in a rapid accumulation of blood in the knee joint (haemarthrosis) and is often associated with damage to other structures, especially the medial meniscus. Treatment depends on the sport involved, the degree of instability and of other damage. In sportspeople complete rupture usually requires surgical repair, resulting in a lengthy (up to 9 months) rehabilitation programme, before return to sport. Disruption of only the posterior ligament may result in significant instability but may be hard to diagnose clinically. See also drawer sign, Lachman test.

cruciate ligaments

paired X-shaped intra-articular ligaments linking femur and tibia within the knee joint, passing from the tibial intercondylar area to the distal femur intercondylar fossa; both ligaments are relatively tensed throughout knee movement
  • anterior cruciate ligament passes upwards and backwards from anterior part of tibial intercondylar area to posterior part of medial surface of femoral lateral condyle; action: prevention of posterior slip of femur on tibial platform; becomes increasingly tense towards end of knee extension, allowing medial femoral condyle to continue to rotate on tibial platform, to lock knee joint during extension

  • posterior cruciate ligament passes upwards and forwards from posterior part of tibial intercondylar area to anterior part of lateral surface of femoral medial condyle; it receives slips from posterior part of lateral meniscus; action: prevention of anterior slip of femur on tibial platform

References in periodicals archive ?
Tillberg B 1977 The late repair of torn cruciate ligaments using menisci Journal of Bone and Joint Surgery 59-B 15-19
Q MY German shepherd fell awkwardly catching a ball and the vet says he's damaged his cruciate ligament.
25) Several associated conditions have been found to occur in patients with CSF, including, hypoplastic lateral condyle, hypoplastic patella, genu valgum, coxa vara, acetabular dysplasia, and absence of the cruciate ligaments.
1) Intra-articular ganglia involving the cruciate ligaments of the knee are relatively uncommon.
At least he hasn't suffered an anterior cruciate ligament injury after he limped off against Palace.
The cruciate ligaments situated in the middle of the knee joint, nearer to the posterior than anterior surface.
We may observe meniscus rupture and cartilage damage together with anterior cruciate ligament ruptures.
Rupture of the cranial cruciate ligament in dogs ***
The club added in a statement: "Today's MRI scans on John Terry's right knee thankfully show no significant damage to the cruciate ligaments.
Jenkins DH 1978 The repair of cruciate ligaments with flexible carbon fibre.
An injury we often see is rupture of the cruciate ligament in the stifle (knee) joint.
Cruciate ligaments are criss-crossed over the knee, stabilizing the joint while allowing for a very large range of motion.