Knee Anatomy

Question 1

Major Bones in Knee Joint

Answer 1

Femur, Patella, Tibia, Fibula

Question 2

Femur

Answer 2

Thigh Bone –> femoral Condyle

Question 3

Condlye

Answer 3

A rounded protrubence at the end of a bone forming an articulation with another bone. Bears brunt of force exerted on joint

Question 4

2 Femur Condyle

Answer 4

lateral and medial

Question 5

Lateral Femoral Condyle vs. Medial

Answer 5

Lateral = outside, more prominent and is broader
medial = inside

Question 6

tibia

Answer 6

Shine bone - tibial platue

Question 7

TIbial Platue

Answer 7

proximal tibial surface where the femur rests. divided into to articular sections, one fore each femoral condyle. Function as shock obsorbers with fibrocartilagenous rings

Question 8

Patella

Answer 8

Knee Cap.

- plays key role in the pulley mechanism that extends the knee joint. Also protects front of joint

Question 9

Femoral Trochlea

Answer 9

Cartiligous part of the distal femur, for articulation with patella to form the femoral patellar joint. consist of groove bounded by lateral and medial ridges

Question 10

2 types of cartilage in knee

Answer 10

Articular (Hyaline) cartilage and Meniscus (Fibrocartilage)

Question 11

Articular Cartilage

Answer 11

• hyaline

- cushions the end of the femur (condyles) and the back of the patella (knee cap). Smooth and strong

Question 12

Meniscus

Answer 12

• lateral and medial

- crescent shaped, shock absorbers disperse weight and reduce friction between articular surfaces of the femur and tibia

Question 13

Lateral vs Medial Meniscus

Answer 13

• lateral is more closed C-shape than the medial and covers more of the articular surface
• Medial is fused to the MCL

Question 14

Ligaments and Tendons (7)

Answer 14

1. ACL
2. LCL
3. ligaments of fibular head
4. MCL
5. Quads and Patellar Tendon
6. Popliteus Muscle and tendon

Question 15

Cruciate vs Collateral Ligaments

Answer 15

Cruciate = ligaments found within the joint. ACL & PCL

Collateral - ligaments found outside the joint. MCL &LCL

Question 16

Cruciate Ligaments

Answer 16

ACL & PCL

Question 17

Collateral Ligaments

Answer 17

MCL & LCL

Question 18

ACL

Answer 18

Anterior Cruciate Ligament

• connects the lateral femoral condyle to the anterior portion of the tibal plateau
• comrpomised of two primary bundles

Question 19

2 primary bundles of ACL

Answer 19

Anteromedial and posteromedial

- defined based off of where they connect on the tibial platue

Question 20

PCL

Answer 20

Posterior Cruciate Ligament

• bridges from the medial femoral condyle to just beyond the posterior portion of the tibial plateau
• composed of two primary bundles as well

Question 21

LCL AKA??

Answer 21

fibular collateral ligament

Question 22

LCL

Answer 22

connects the lateral femoral condyle to the head of the fibula
- the lcl is not attached to the meniscus of capsule
-

Question 23

MCL

Answer 23

medial collateral ligament

• AKA tibial collateral ligament
• connects the medial condyle of femur to the tibia
• broader than the LCL, injured more frequently.
• has attachments to both the capsule and the medial meniscus

Question 24

Tendon

Answer 24

serves to move bone or structure

Question 25

Ligament

Answer 25

fiburous tisse which attaches bone to bone

Question 26

Quadricep and Patellar Tendon

Answer 26

- sometimes termed pateller ligament - attaches patella to the tibia. Patella is embedded w/ patella tendon which is continuous w/ the qudriceps tendpn superior to the patella - allows patella to move vertically upwards along groove in femur femoral trochlea - superior to joint characteristics of tendon. inferior to joint characteristics of ligament

Question 27

Synovial Membrane

Answer 27

Connective tissue which lines the inner surface of the capsule of a synovial joint and secrete synovial fluid to lubricate joint

Question 28

Synovial Joint

Answer 28

joint found between bones that move against eachother

Question 29

Articular Capsule

Answer 29

capsule envelops the joint. thin synovial membrane lines much of it.

Question 30

Popliteus Muscle and tendon

Answer 30

small muscle on the back of the knee spanning from the posterior of the tibia to the tendon origin on the lateral femoral condyle - allows for rotation of tibia and femur w/ respect for each other