Table of Contents
What is posterior translation of the tibia?
Posterior tibial translation in the midmedial compartment may be a secondary sign of isolated PCL tear on routine knee MRI with passive extension without manipulation or weight bearing. Additional work in a larger cohort may better address the accuracy of this finding.
What is translation of the tibia?
os) shinbone ⧫ tibia.
What is anterior translation of the tibia?
Anterior tibial translation (ATT) refers to an abnormal relationship between the tibia and femur and is typically present after anterior cruciate ligament (ACL) injury.
What direction does the tibia move?
More precisely, from 20o knee flexion to full extension, tibia rotates externally. During knee flexion, tibia glides posteriorly on femur and from full knee extension to 20o flexion, tibia rotates internally.
What does posterior translation mean?
Posterior comes from the Latin word posterus, meaning “coming after”. Posterior is often used as a technical term in biology and medicine to refer to the back side of things, and is the opposite of anterior, which refers to the front side.
What is the PCL attached to?
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 anterior translation of femur?
The anterior tibial translocation sign or anterior drawer sign (a.k.a. anterior translation of tibia) is seen in cases of complete rupture of the anterior cruciate ligament and refers to anterior translocation (anterior tibial subluxation) of the tibia relative to the femur of >7 mm 1.
What does the PCL connect to?
The posterior cruciate ligament (PCL) is located inside the knee, just behind the anterior cruciate ligament (ACL). It is one of several ligaments that connect the femur (thighbone) to the tibia (shinbone). The posterior cruciate ligament keeps the tibia from moving backward with relation to the thigh bone.
What is inferior to the tibia?
The bottom (inferior) of the tibia rests on the top and to the medial aspect of the talus. The fibula rests on the lateral portion of the tibia against the fibular notch and extends down over the talus. The three bones make up the largest part of the ankle.
Where does the PCL attach to the tibia?
The PCL originates from the anterolateral aspect of the medial femoral condyle within the notch and inserts along the posterior aspect of the tibial plateau, approximately 1 cm distal to the joint line.
Which ligament is attached at the posterior surface of the tibia?
The posterior cruciate ligament (PCL) is a ligament in each knee of humans and various other animals. It works as a counterpart to the anterior cruciate ligament (ACL). It connects the posterior intercondylar area of the tibia to the medial condyle of the femur.
Which ligament restricts posterior translation and external rotation of tibia?
The PCL
The PCL is an important restraint of posterior tibial translation relative to the femur. In addition, the PCL acts as a secondary restraint to resist varus, valgus, and external rotation moments about the knee.
What is a posterior sag?
The posterior sag sign is a highly specific and sensitive sign for diagnosing PCL injuries, with values of 83% and 100%, respectively. 6. PCL injuries usually occur when the knee is flexed or during head-on collisions of the tibia, such as when the tibia strikes the dashboard during a motor vehicle accident.
Is the tibia proximal to the femur?
The tibia is located in the lower leg medial to the fibula, distal to the femur and proximal to the talus of the foot. It is widest at its proximal end near the femur, where it forms the distal end of the knee joint before tapering along its length to a much narrower bone at the ankle joint.
Where is the proximal tibia?
(Left) The proximal tibia is the upper portion of the bone, closest to the knee. (Right) Ligaments connect the femur to the tibia and fibula (kneecap not shown).
What is inferior to tibia?