What is the function of the posterior cruciate ligament?
The posterior cruciate ligament, located in the back of the knee, is one of several ligaments that connect the femur to the tibia. The posterior cruciate ligament keeps the shinbone from moving backward too far. It is stronger than the anterior cruciate ligament and is injured far less often.
What is the function of the posterior cruciate ligament quizlet?
the posterior cruciate ligament is to prevent the tibia from sliding backward on the femur, and to help the ACL control tibio-femoral rotation.
What is the function of each cruciate ligament of the knee joint?
The anterior cruciate ligament prevents the femur from sliding backward on the tibia (or the tibia sliding forward on the femur). The posterior cruciate ligament prevents the femur from sliding forward on the tibia (or the tibia from sliding backward on the femur).
What force does the PCL resist?
Function. The PCL functions as one of the main stabilizers of the knee joint and serves primarily to resist excessive posterior translation of the tibia relative to the femur. The PCL also acts as a secondary stabilizer of the knee preventing excessive rotation specifically between 90° and 120° of knee flexion.
What is the function of the anterior and posterior cruciate ligaments in the knee quizlet?
Terms in this set (28) The function of the anterior cruciate ligament is to prevent the tibia from sliding forward on the femur, and to control tibio-femoral rotation.
What is the ACL What purpose does it serve and how is it positioned in relation to the other knee ligaments quizlet?
CS4: What is the ACL, what purpose does it serve, and how is it positioned related to the other knee ligaments? 2) Important for stabilization and is most commonly injured. Prevents femur from sliding posteriorly on tibia.
What is the location and function of the ACL?
Anterior cruciate ligament (ACL) is in the middle of the knee. It prevents the shin bone from sliding out in front of the thigh bone. Posterior cruciate ligament (PCL) works with the ACL. It prevents the shin bone from sliding backwards under the femur.
What are the 4 ligaments of the knee and what do each help with?
The lateral collateral ligament (LCL) is on the outer side of your knee. It connects your femur to your calf bone (fibula). The collateral ligaments prevent the knee from moving side to side too much. Cruciate ligaments: The two cruciate ligaments are inside your knee joint and connect your femur to your tibia.
What muscles support the PCL?
The quadriceps muscles are a large group of muscles on the front of the thigh that straighten and rotate the leg. The hamstring muscles are located at the back of the thigh. The hamstring muscles bend or flex the knee. Four ligaments connect the knee bones together.
Does PCL have blood flow?
The blood supply of the PCL mainly arises from the middle geniculate artery. The ligament is covered by a synovial fold where the terminal branches of the middle geniculate artery form a periligamentous network.
What are the four ligaments of the knee?
The four main ligaments in the knee connect the femur (thighbone) to the tibia (shin bone), and include the following:
- Anterior cruciate ligament (ACL).
- Posterior cruciate ligament (PCL).
- Medial collateral ligament (MCL).
- Lateral collateral ligament (LCL).
Which ligament of the knee initiates the knee jerk reflex?
FINAL
| Question | Answer |
|---|---|
| WHICH LIGAMENT OF THE KNEE INITIATES THE KNEE JERK REFLEX WHEN TAPPED | THE PATELLAR LIGAMENT (A) |
| FOOTBALL PLAYERS OFTEN SUSTAIN LATERAL BLOWS TO THE EXTENDED KNEE. WHAT LIGAMENTS ARE DAMAGED AS A RESULT | MEDIAL COLLATERAL, MEDIAL MENISCUS, & ANTERIOR CRUCIATE LIGAMENTS. (D) |
What is the function of the anterior and posterior cruciate ligaments?
The PCL is responsible for stabilizing the knee posteriorly (from the back) and preventing hyperextension-straightening the joint beyond the normal range of motion- at the knee joint. The ACL, on the other hand, is responsible for preventing the knee from gliding anteriorly.
What is the function of the cruciate ligaments in the knee joint quizlet?
How do PCL injuries occur?
The PCL most often is injured when the front of the knee hits the dashboard during an automobile accident. During sports activities, the PCL also can tear when an athlete falls forward and lands hard on a bent knee, which is common in football, basketball, soccer and especially rugby.
What movement does the posterior cruciate ligament?
Your posterior cruciate ligament (PCL) runs along the back of your knee and connects your thighbone to the top of your lower leg bone. This ligament keeps your bones in place and helps your knee move smoothly.
What causes no knee-jerk reflex?
Clinical Significance An absent or diminished patellar tendon reflex may be due to PNS pathology affecting either the afferent sensory neurons or the efferent motor neurons. If the reflex is absent or diminished combined with sensory loss, the lesion is likely in the afferent sensory nerves.