Overview: The anterior cruciate ligament (ACL) is crucial to knee stability as its function is directly related to the anatomical morphology.9 The ACL is one of the two ligaments that interconect the femure and tibia in the intercondylar sector of the knee.4 It consists of two bundles: antromedial (AMB) and postrolatral (PLB). Both bundles originate from the postero-medial aspect of the lateral femoral condyle and run in an oblique manner to insert on the anterior region to the intercondylar tibial eminence.17 The ACL is comprised of multiple collagen fascicles, mainly type I collagen, surrounded by connective tissue and covered by the synovial membrane.17 The average width of the ACL is 11mm and the mean length of the AMB is 33mm, while it is 18mm for the PLB.14 The ACL is mainly supplied with blood by the middle geniculate artery branch from the anterior aspect of the popliteal artery.1 The inferior medial and lateral geniculate artery is considered a secondary blood supply, and is innervated by the posterior articular branches of the tibial nerve.9 The majority of neural structures are located in the subsynovial layer and close to the insertion.17 The ACL mainly contains mechanoreceptors and nociceptors. Mechanoreceptors, which include Ruffin, Pacini, and Golgi-like receptors, act as a proprioceptive while free nerve endings function as the nociceptors.5 Variations around the ACL morphology: There is considerable controversy around the morphology of the ACL in the
The ACL is one of the most frequently uinjured ligaments of the knee.( 59 )
The Anterior Cruciate Ligament (ACL) and the Posterior Cruciate Ligament (PCL) are located inside the knee joint. The ACL and PCL form an ‘X’ behind the kneecap (patella), with the ACL resting in front of the PCL. Both of these ligaments are responsible for controlling the back and forth motion of the knee joint; however, the ACL is responsible for stabilizing the kneecap ). In addition, the ACL is responsible for preventing the shin bone (tibia) from sliding forward on the thigh bone (femur). The ACL provides the knee with stability while an individual pivots or twists. This ligament is critical because without it, performing any kind of rotational activity is impossible, particularly when it comes to playing sports like soccer and basketball.
Grade 1 ACL sprain is the slightest extreme of all the ACL sprains the muscle is harmed yet just a bit. It has been marginally extended, however the ACL is still ready to keep the knee stable and can work without a support. Grade 2 ACL sprain is the point at which the muscle is extended to the point where it turns out to be free. This is alluded to as a fractional tear of the ligament. Grade 3 ACL sprains is a finished tear of the ACL and is the most serious of the considerable number of sprains. The muscle has been part into two pieces and the knee joint is not ready to work without a support. Incomplete tears of the foremost cruciate ligament are not regular most ACL wounds are finished or practically finish tears. (American Foundation of Orthopedic Specialists)
Study Design & Methods: We selected patients who underwent an ACL reconstruction with a hamstring autograft by the same surgical technique (single-bundle reconstruction in anatomical position, endobutton femoral fixation and tibial interference screw fixation) with a
The purpose of ACL reconstruction is to restore function by repairing normal movements, replicate knee anatomy, and to protect the knee for a long duration. More specifically, the dimensions, orientation, and insertion sites of the ACL must be restored. To ensure this, future consideration for improvement of ACL reconstruction surgery is vital.
An anterior cruciate ligament tear can be confirmed by the Lachman test, the dynamic extension test, and the Pivot jerk test. The Lachman test and dynamic extension test is helpful in, “making a diagnosis, particularly in the acute injury.” (1) The lateral pivot test reproduces, “the rotatory subluxation that occurs in ACL defiency. The test is difficult to perform and takes residents and fellows in my practice approximately three months of intensive training to be able to adequately perform the jerk test in the unanaesthetised patient.”(1) The test is important because the demonstration of the lateral pivot jerk is the replication of the instability that the patient has. The initial goals of treatment immediately after injury are to reduce pain, reduce
In the past an injury to the ACL has been considered “career ending.” The anatomy of the anterior cruciate ligament is created to support the knee. The ACL creates a cross in the knee when prepared with the posterior cruciate ligament, PCL. The job of the anterior cruciate ligament is to keep the tibia from moving anteriorly and the femur from rotating.
First and foremost, your knee has four ligaments. The ligaments line up your bones and help control the way you move. It prevents the shins from moving too far forward. ACL injuries sometimes requires surgery.
If I could do-over one day I would choose May 5, 2015 of my junior year of high school. On that day I tore my anterior cruciate ligament (ACL) and it changed my life forever. Tearing my ACL affected me academically, athletically, and mentally.
The anterior cruciate ligament (ACL) is one of the four main ligaments in the knee joint that connect it to the shin bone (tibia) and thigh bone (femur). It 's located deep within the joint, behind the kneecap (patella), above the shinbone, and below the thighbone. The ACL lies diagonally across the middle of the knee and plays a role in keeping the knee stable during movement. Partial tears of the ACL can occur, but are rare. Most ACL tears are either near-completes or complete tears. After experiencing an ACL tear, an athlete has a 15 times
This short and round ligament, like all other ligaments, prevents slippage within the joint and allows the joint to properly pivot when performing an action (Duff 300). Without this particular ligament, the knees would be fragile and more susceptible to injury. Therefore, it would be impossible to do the simplest movements that are done by humans everyday, like walking and even sitting. This is one reason why many athletes should be aware of the physical indications that arise if they have torn their ACL while participating in athletic activities.
The UCL is divided into three bundles: the posterior bundle, transverse bundle, and anterior bundle. The posterior bundle has an origin on the medial epicondyle, and insertion on the semilunar notch of the ulna. The posterior bundle is a secondary stabilizer that stabilizes the elbow when it is in flexion beyond 90 degrees, and is about 8 mm long. The second bundle is called the transverse bundle. The origin of the transverse bundle is the medial olecranon, and the insertion is the inferomedial coronoid process. This portion of the UCL does not contribute to the valgus stability. The final bundle is the anterior bundle of the UCL. The anterior bundle has an origin on the anteroinferior aspect of the medial epicondyle, and an insertion on the
The knee joint consists of four ligaments, two intra-capsular which are the ACL and the PCL and two extra-capsular ligaments including the MCL and LCL. The ACL is an extremely strong stabiliser which prevents anterior displacement of the knee. The ACL is a ligament and therefore connects one bone to another, the femur with the tibia. The ACLs origin is from the anterior intercondylar eminence of the tibia (home,2017) and the fibres pass upwards, backward and laterally inserting into the lateral condyle of the femur.
The Anterior Cruciate Ligament also known as the ACL is deemed the most commonly torn ligament in the knee and can result from both contact and noncontact injuries. Most Anterior Cruciate Ligament injuries result from an extreme force on the lateral side of the person’s knee causing a valgus force which pushes the knee inward (Kisner & Colby, 2012, pp. 802-803). This injury to the side of the knee can also cause a “Terrible Triad” injury which also injures both the medial meniscus and the medial collateral ligament (Kisner & Colby, 2012, p. 803). Our textbook further states that “the most common noncontact mechanism is a rotational mechanism in which the tibia is externally rotated on the planted foot….this mechanism can account for as many as 78% of all ACL injuries” (Kisner & Colby, 2012, p. 803). If the person does not seek medical help with this injury they are susceptible to also injuring the remaining support ligaments as well. Patients usually present with joint effusion; possibly 25 degrees of flexion, joint swelling if blood vessels are involved, limited ROM, stress pain and instability along with quads avoidance gait patterns (Kisner & Colby, 2011, p. 208)
A torn ACL is one of the most serious and common knee injuries. Many aspects play a role in the treatment and rehabilitation of this injury. This paper will discuss the anatomy of the knee, describe a torn ACL, and the rehabilitation.