Knee and Hip Ligaments Flashcards
C-shaped Meniscus?
Medial Meniscus
O-shaped Meniscus?
Lateral Meniscus
What does the Medial Meniscus attach to?
Attached to the MCL and the posterior horn is attached to the semimembranosus vis the capsule
What does not the Lateral Meniscus attach to?
Does not attach to collateral or capsular ligaments
What does the Lateral Meniscus attach to?
Attaches to the Arcuate Ligament and Popliteus Muscle
Menisci carry up to ___% of the load on the Tibia.
70
Menisci facilitates what?
Knee joint stability during motion
What are the primary knee ligaments?
ACL
PCL
MCL
LCL
What does the ACL do?
Checks anterior tibial shear and internal rotation of the Femur (or external rotation of the Tibia)
What does the PCL do?
Checks posterior tibial shear
What does the MCL do?
Checks tibial abduction (valgus force), External rotation
What does LCL do?
Checks tibial adduction (varus force), Internal rotation
Anteromedial bundle is tighter in ______.
flexion
Posterolateral bundle is tighter in ______.
extension
ACL handles up to ___% of anterior tibial force at full extension and up to ____% at knee flexion.
75
90
PCL handles between ___ and ____% of posterior tibial force at both 30 and 90 degrees of flexion.
85
100
LCL handles approx ____% of varus force at full extension and ______ with flexion.
55
increases
MCL handles up to ___% of the _____ load on the knee.
50
valgus
How many anterior bursa of the knee?
4
How many posterior bursa of the knee?
3
How many medial bursa of the knee?
1
Name the anterior bursa of the knee.
Suprapatellar
Prepatellar
Subcutaneous Infrapatellar
Deep Infrapatellar
Name the posterior bursa of the knee.
Popliteus
Semimemranosus
Gastrocnemius
What is the Medial Bursa of the knee?
Pes Anserine
What three muscles make up the Pes Anserine?
Sartorius
Gracilis
Semitendinosus
Other Knee Ligaments?
Oblique Popliteal Arcuate Popliteal Posterior Meniscofemoral (Wrisberg) Anterior Meniscofemoral (Humphrey) Posterior Ligament Transverse Ligament Coronary Ligament Patellar Ligament
What are the hip ligaments?
Iliofemoral
Pubofemoral
Ischiofemoral
One of the strongest ligaments in the body?
Iliofemoral
What does the Iliofemoral ligament do?
Resists extension and internal rotation
What does the Pubofemoral ligament do?
Resists abduction and external rotation
What does the Ischiofemoral ligament do?
Resists extension and internal rotation
How many muscles are innervated by the Radial Nerve?
13
How many muscles are innervated by the Median Nerve?
11
How many muscles are innervated by the Ulnar Nerve?
10
What group of muscles originates on the Lateral Epicondyle?
Extensors
What group of muscles originates on the Medial Epicondyle?
Flexors
