knee-foot Flashcards
exam 2
muscles
name the muscles involved
joints - all the details
ligaments
ligaments
joints of lower limb: knee
what bones create the ankle joint -talocural
tibia, fibula, talus
knee joint
what 3 stabilities is the knee joint made for?
- bony stability
- muscualr stability
- ligamentous stability
what are the 3 bones participating in the knee?
- femur
- tibia
- patella
only 2 of these are bones technically
how many points of articulation are in the knee? what are they?
3 points of articulation
- femur and tibia (medial/lateral) condyles
- femur (patellar surface)
- patella (medial/lateral articular surfaces)
osteology
what shape is the patella?
what kind of bone is the patella?
what is the patella an important insertion point for?
- relatively heart shaped
- sesamoid bone
- importatn insertion for ligaments
soft tissue also supports the knee - what 2 types of ligaments?
- intra-articular
- extra-capsular
what is the primary action of patella?
flexion/extension
how many facets of patella? how many are paired? how many are singular?
7 facets (relative to action)
- 6 paired facets (medial/lateral)
- 1 unpaired (mostly medial)
Where is the Q angle drawn between?
drawn between os coxa (ASIS) and mid patella
tibia (tibial tuberosity) and mid patella
What are the three major joints of the lower limb?
Knee, Hip, Ankle (Talocrural)
The knee involves the patella, unlike the upper limb joints.
What bones make up the knee joint?
Femur, Tibia, Patella
The points of articulation are medial/lateral femorotibial and femoropatellar.
What is the primary function of the knee joint?
Stability and mobility
What types of stability does the knee joint have?
- Bony Stability
- Muscular Stability
- Ligamentous Stability
What is the screw-home mechanism in the knee?
The knee locks in position as the size of the femoral condyles relative to the tibial plateau causes medial condyle to move further than the lateral condyle during full extension.
What are the primary actions of the knee joint?
Flexion & Extension
True or False: The knee joint is classified as a hinge joint.
True
What are the two types of ligaments in the knee joint?
- Intra-articular
- Extra-capsular
What is the role of the anterior cruciate ligament (ACL)?
Limits posterior rolling of femoral condyles on tibia during flexion and prevents posterior displacement of femur.
What is the role of the posterior cruciate ligament (PCL)?
Limits anterior rolling and prevents anterior displacement of femur and hyperflexion.
What is the Q-angle?
Measurement between ASIS to mid-patella & mid-patella to tibial tuberosity.