Patella, tibia, fibula and knee joint

Question 1

what is patella/kneecap

Answer 1

• The largest sesamoid bone
• It’s triangular (base and apex)
• Two surfaces- anterior surface (non articular) and posterior surface articulates with the
  femur & has medial & lateral facets

Question 2

what is the function of tibia and fibula

Answer 2

• Tibia articulates with the
  condyles of the femur
  superiorly and the talus
  inferiorly
• Fibula mainly functions as an
  attachment for muscles, and it
  is also important for the
  stability of the ankle joint.
• shafts of the tibia and
  fibula are connected by a dense
  interosseous membrane.

Question 3

what are the proximal ends of tibia?

Answer 3

• Medial tibial condyle
• Lateral tibial condyle
• Intercondylar area
• Tibial tuberosity

Question 4

what is the three surfaces on shaft of tibia?

Answer 4

Three surfaces : medial, lateral, and posterior.
Ø Medial surface- smooth and subcutaneous
Ø Posterior surface – contains soleal line
Ø Lateral surface – smooth and unremarkable

Question 5

what is the distal end of tibia?

Answer 5

• Medial malleolus
• Fibular notch
• Articular surface

Question 6

what is the fibula?

Answer 6

• The lateral bone of the leg
• Does not take part in formation of the knee joint or in weight-bearing.
• It is much smaller than the tibia

Question 7

what is the proximal end of fibula

Answer 7

head and neck

Question 8

what is the shaft of fibula?

Answer 8

delicate

Question 9

what is distal end of fibula?

Answer 9

lateral malleolus

Question 10

true or false, knee joint is the largest synovial joint

Answer 10

true

Question 11

what does knee joint consist of?

Answer 11

• Articulation between the femur and tibia= femorotibial
• Articulation between the patella and the femur= femoropatellar

Question 12

label the proper extracapsular ligaments in knee joint
o Patellar ligament
o Fibular collateral ligament
o Tibial collateral ligament
o Oblique popliteal ligament
o Arcuate popliteal ligament

Answer 12

PL is red
FCL is green
TCL is blue
OPL is yellow
APL is purple

Question 13

what is patellar ligament?

Answer 13

• Is the continuation of the quadriceps femoris tendon
• Extend from the apex of patella to the tibial tuberosity

Question 14

what is fibular collateral ligament?

Answer 14

extends from lateral femoral epicondyle to fibular head

Question 15

what is tibial collateral ligament?

Answer 15

extends from the medial epicondyle of femur to the
medial condyle of tibia

Question 16

what is oblique popliteal ligament?

Answer 16

a recurrent expansion of the tendon of the
semimembranosus

Question 17

what is Arcuate popliteal ligament?

Answer 17

Arises from the posterior aspect of the fibular head, Passes
superomedially over the tendon of the popliteus & Spreads over the posterior surface of
the knee joint

Question 18

true or false, intracapsular ligaments do not interconnect femur and tibia

Answer 18

false

Question 19

what is anterior cruciate?

Answer 19

attaches to the ANTERIOR part of tibia and ascends posteriorly to attach to intercondylar
fossa of the femur

Question 20

what is posterior cruciate?

Answer 20

attaches to the POSTERIOR aspect of the tibia and ascends anteriorly to attach to the
medial wall of the intercondylar fossa of the femur

Question 21

what is meniscus?

Answer 21

• Two fibro cartilaginous discs: medial & lateral
• Deepen and stabilize
• Shock absorbers

Question 22

what is lateral meniscus?

Answer 22

• Nearly circular
• Smaller
• Freely movable
• Not as
  Susceptible to
  Injury

Question 23

what is medial meniscus?

Answer 23

• C-shaped
• Broader
  Posteriorly
• Firmly adhered to
  the- Tibial
  Collateral Lig

Question 24

label the bursaes
SPB
PPB
IPB

Answer 24

SPB is green
PPB is red
IPB is blue