The Knee Flashcards
(29 cards)
Type of Joint (knee)
Synovial (largest in the body)
Knee Joint Articulations
Tibiofemoral and Patellofemoral Joints
Tibiofemoral Joint
Between Femur and Tibia- weightbearing
Patellofemoral Joint
Between Patella and Femur- redirects pull of quadriceps over the knee
Bony Landmarks on distal femur
-Medial and Lateral Condyles
-Medial and Lateral Epicondyles
-Intercondylar notch
-patellar groove
Bony landmarks on proximal tibia
-medial and lateral condyles
-Intercondylar eminence
-Tibial Tuberosity
type of bone (patella)
sesmoid
What tendon the patella is embedded in
Quadriceps Tendon
Bony Landmarks on patella
-medial and lateral facets
-apex (inferior)
-base (superior)
Cartilage of the knee
Hyaline and Menisci
Hyaline Cartilage of the Knee
Covers femoral, tibial condyles, and patellar groove
Medial Meniscus
C- shaped, attached to joint capsule and MCL
Lateral Menicus
No capsular attachment (more mobile)
-reduce pressure and stabilize knee
Knee Medial Side of Joint capsule
blends with MCL and attaches to medial meniscus
Knee Lateral Side of Joint Capsule
Seperated from LCL- does not attach to lateral meniscus
Posterior Joint Capulse of knee
Prevents hyperextension (arcuate and oblique popliteal ligaments)
ACL
Prevents anterior translation of tibia and hyperextension
PCL
Prevents posterior translation of tibia and hyperflexion
MCL
Resists Valgus Force; attached to medial meniscus
LCL
Resists Varus forces; does not attach to lateral meniscus
Patellar Retinacula
Thin connective tissue that provides stability to patellofemoral joint
Muscles that extend the knee
Quads- all innervated by femoral nerve
Muscles that flex the knee
Hamstrings (tibial nerve), gracilis (obturator nerve), and popliteus
Screw Home mechanism
popliteus unlocks knee
medial rotation of tibia locks
