Exam 4 Part 2 Knee joint Flashcards Preview

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Flashcards in Exam 4 Part 2 Knee joint Deck (26):
1

The knee joint is formed from the articulation of the:

Femur, tibia, & patella

2

During development, 3 separate joints become continuous w/ each other & form a single, large knee cavity

1. B/t patella & femur
2. B/t lateral condyles of the femur & tibia
3. B/t medial condyles of the femur & tibia

3

Articulating surface of the tibial condyles are also known as?

Lateral & medial tibial plateaus

4

Joint b/t the FEMUR & TIBIA is classified as?

Ginglymus (hinge) w. some degrees of rotation when joint is flexed

5

Joint b/t the PATELLA & FEMUR is classified as?

Plane gliding

6

Nerve supply to the knee joint?

Femoral
Obturator
Common fibular
Tibial

7

Bursae that lies b/t the patella & the skin

Subcutaneous PREpatellar

8

Bursae that lies b/t the tibial tubercle & the skin

Subcutaneous INFRApatellar

9

Bursae found b/t the ligamentum patella & the tibial tubercle

Deep infrapatellar

10

Bursae that lies b/t the femur & the common tendon of insertion of the quadriceps

Suprapatellar

11

Extrinsic ligaments of the knee joint (4)

1. Ligamentum Patella
2. Lateral (fibular) collateral
3. Medial collateral
4. Oblique & Arcuate Popliteal

12

- Anterior lig. of the knee joint & represents the original distal common tendon of insertion of the quadriceps
- Runs from the apex of the patella to the tibial tubercle
- Important part in maintaining the alignment of the patella relative to the articular surface of the femur

Ligamentum Patella

13

- Located on the lateral side of the joint
- superficial & separate from the articular capsule of the joint
- Attaches from the lateral epicondyle of the femur (proximally) to the head of the fibula (distally)
- Functions as a wall & prevents lateral movement (abduction) at the joint

Lateral (fibular) Collateral

14

- Medial side of the knee joint
- Blends w/ the articular capsule & directly attaches to the medial meniscus
- Attaches the medial epicondyle of the femur (proximally) & to the medial side of the tibia, just below the medial condyle (distally)

Medial (Tibial) Collateral

15

- Found on the posterior aspect of the knee joint
- They both function as walls to prevent HYPERextension of the joint
- They also stabilize the posterior aspect of the knee joint

Oblique & arcuate popliteal

16

Intrinsic ligaments of the knee joint (7)

1. Anterior Cruciate
2. Posterior Cruciate
3. Menisci or semilunar Cartilages
4. Medial Meniscus
5. Lateral Meniscus
6. Coronary Lig.
7. Transverse lig. of the knee

17

- These are 2 VERY strong lig. which cross each other like an X in the center of the knee joint
- Named Ant. & post. according to their tibial attachments
- They are main bonds b/t the femur & tibia

Cruciate Ligaments (Ant. & Post.)

18

- Well developed blood supply from time of birth until 18 months old
- Nutrition is supplied to the menisci of an adult through blood vessels in the peripheral portion & by diffusion from the synovial fluid for the central portion of the menisci

Menisci or Semilunar Cartilages

19

Main functions of the menisci are to:

1. Deepen the articulating surface
2. Act as a shock absorber
3. Act as a mechanoreceptor to increase positional sense of the knee joint

20

- Weaker of the 2 cruciate lig. runs from the lateral condyle of the femur (proximally) to the anterior intercondylar area of the tibia (distally)
- prevents anterior displacement of the tibia under the femur & thus functions like a ROPE

Anterior Cruciate

21

- Stronger of the cruciate lig.
- Runs from the medial condyle of the femur (proximally) to the posterior intercondylar area of the tibia (proximally)

Posterior Cruciate

22

- "C" Chaped & firmly adheres to the tibial collateral lig.
- Its less mobile on the surface of the tibia

Medial Meniscus

23

- Nearly circular in shape & smaller than medial meniscus
- More freely movable on the surface of the tibia

Lateral Meniscus

24

- Ass. w/ the menisci
- Are a portion of the joint capsular lig. whch attaches to the edge of the menisci & helps to hold them in place

Coronary Ligaments

25

Joins the anterior edges of the medial & lateral menisci & allows them to work together

Transverse Ligament of the knee

26

Nerve supply to the knee joint

Femoral
Obturator
common fibular ; tibial