Knee Region Flashcards
What type of joint is the knee joint?
Modified Hinge Joint
How many DOF does the knee joint have?
2 DOF (Flexion, Extension)
OPP of Knee Joint
25 degrees Flexion
CPP of Knee Joint
Extension with ER of Tibia
What type of joint is the patella?
Modified Plane Joint
Functions of the Patella
Increases quad leverage
Protects the anterior portion of femur
Provides gliding mech for quads
Facets of the Patella
Base
Apex
Medial
Lateral
Odd
Patellar loading during walking
0.3 x BW
Patellar loading during climbing the stairs
2.5 x BW
Patellar loading during descending stairs
3.5 x BW
Patellar loading during squats
7 x BW
What is the screw home mechanism during OKC
During last 20 degrees of ext, Tibia will ER over Femur (OKTER)
What is the screw home mechanism during CKC?
During last 20 degrees of ext, Femur will IR over the Tibia (CKFIR)
What is attached to the Medial Meniscus?
ACL, MCL, and Semimem
What is attached to the Lateral Meniscus?
PCL and Popliteus
The functions of cruciate ligaments
Anteroposterior and rotary stabilizers
OI of ACL
O: Ant. Spine of Intercondylar Eminence
I: Lateral Femoral Condyle
OI of PCL
O: Post Spine of Intercondylar Eminence
I: Medial Femoral Condyle
Orientation of ACL
Posterior, Lateral, Superior (PLS)
Orientation of PCL
Superior, Anterior, Medial (SAM)
Primary and Secondary Restraints of Anterior Translation
Primary: ACL
Secondary: MCL and LCL
Primary and Secondary Restraints of Posterior Translation
Primary: PCL
Secondary: MCL and LCL
Primary and Secondary Restraints of Valgus Force
Primary: MCL
Secondary: ACL and PCL
Primary and Secondary Restraints of Varus Force
Primary: LCL
Secondary: ACL and PCL