Ligaments of the Knee and what they do
ACL
Internal Rotation of Tibiofemoral joint
and
Anterior Displacement of Tibia on Femur
ACL
Internal Rotation
1st Function
Hold bones together at joints.
Muscle
Muscles are what we see on our bodies.
Muscles are what move the body, they have contractile properties that allow them to contract to produce force.
Anterior and Posterior Displacement of the tibia on the femur
Anterior displacement. Tibia moves anteriorly
Posterior displacement. Tibia moves posteriorly
PCL
External rotation Rotation of Tibiofemoral joint
and
Posterior Displacement of Tibia on Femur
PCL
External Rotation
2nd Function
Resist against unwanted movements of joints to they don’t dislocate.
Tendon
Tendons connect muscles to bones.
Tendons are mechanically strong and elastic, which help transfer the force from the muscles onto the bone, to move the body.
Internal Rotation
Knee rotating towards the midline of the body
MCL
Valgus knee
and
External Rotation
MCL
Valgus knee
3rd Function
Strength joints
External Rotation
Knee rotating away from the midline
LCL
Varus knee
and
Internal Rotation
LCL
Varus Knee
4th Function
Stabilize joint.
Ligaments
Ligaments attach bone to bone.
Ligaments act as tensile restraints to control the distance between their attachment points. They act to control the separation of the bones to which they are attached to.
1. Valgus Knee
2. Varus Knee
1. Knee falling into the midline
2. Knee falling away from the midline
The nonphysiological movements of the knee list all even if a little amount is allowed
- valgus knee
- varus knee
- anterior and posterior displacement of the tibia on the femur
- internal rotation and external rotation of knee