Chapter 9 Flashcards
Knee joint (18 cards)
1
Q
Knee joint
A
- primarily a hinge joint
- sagittal plane movements
- flexion and extension joint
1
Q
The biggest joint in the body
A
True
2
Q
Tibia
A
- medial
- bears most of weight and has larger surface area
3
Q
Fibula
A
- lateral
- serves as the attachment for knee - joint structures
- does not articulate with femur or patella
- not part of knee joint not weight bearing
4
Q
Patella
A
- sesamoid (floating) bone
- embedded in quadriceps and patellar tendon
- serves similar to a pulley in improving angel of pull, resulting in greater mechanical advantage in knee extension (lengthens the wrench)
5
Q
Femoral and Tibial condyles together make a
A
Knee joint
6
Q
Ligaments of the knee
A
- Anterior cruciate ligament (ACL)
- Posterior cruciate ligament (PCL)
- Medial collateral ligament (MCL)
- Lateral collateral ligament (LCL)
- Medial meniscus
- Lateral meniscus
7
Q
ACL
A
- the most common injured ligament
- female have better chance to injure it just because of the Q angle
- restricts anterior displacement of the tibia on femur
8
Q
PCL
A
- restricts posterior displacement of the tibia on femur
9
Q
MCL
A
- prevents valgus force on the knee joint
10
Q
LCL
A
- prevents varus force on the knee joint
11
Q
Medial meniscus
A
- forms a receptacle for medial femoral condyle
- larger and more open C appearance
- bucket handle tear
12
Q
Lateral meniscus
A
- receives the lateral femoral condyle
- closed C configuration
13
Q
Knee meniscuses are:
A
- form cushions between bones
- deepen tibial fossa
- attach to tibia
- DOES NOT increase joint mobility
14
Q
Muscles of knee joint:
A
- Quads
- Hamstring
15
Q
Quads
A
- Vastus lateralis muscle
- Vastus intermedius muscle
- Vastus medialis muscle
- Rectus femoris muscle
16
Q
Rectus femoris is the only quads muscle that crosses the hip too
A
True
17
Q
Quads muscles are
A
- inserts on the tibile
