7 - Femur Flashcards Preview

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Flashcards in 7 - Femur Deck (39):
1

What is the main function of the femur?

To transmit forces from the tibia to the hip joint

2

What is this a picture of?

Proximal femur

3

What does the proximal femur form?

The hip joint via articulation with the pelvis

4

What is the proximalfemur made up of?

A head, a neck and two bony processes called trochanters, connected by two bony ridges

5

What is A?

The head, articulates with acetabulum

6

What is the point of the smooth surface of the head?

Provides point of attachment for ligament of the head

7

What is B?

The neck

8

What is C?

The great trochanter, the site of attachment of abductor and lateral rotator muscles of the leg

9

What is F?

Lesser trochanter, forms attachment for Psoas Major and iliacus muscle

10

What is I?

Intertrochanteric lineIliofemoral ligament attach here, which is a very strong ligament of the hip joint

11

What is the intertrochanteric line known as after it passes the lesser trochanter on the posterior surface?

The pectineal line

12

What is D?

The intertrochanteric crest

13

What is the rounded tubercle on the superior half of the proximal femur caled?

The quadrate tubercle, where the quadratus femoris attaches

14

What are the two classifications of femur neck fractures?

Subcapital and trochanteric

15

What is a subcapital fracture?

Result of a minor trip or stumble - Intracapsular fracture of femoral neck where head can undergo avascular necrosis as its blood supply is disrupted by the fractureThe distal fragment is pulled upwards and rotated laterally. This can be seen clinically by a shorter leg length and the toes pointing laterally.

16

What demographic is most at risk of subcapital fractures?

Elderly, most commonly women

17

What demographic are trochanteric fractures common in?

Young and middle aged people

18

What is the difference between a subcapital fracture and a trochanteric fracture? What is a similarity?

Extracapsular and no avascular necrosis occursHowever, leg is shortened and laterally rotated

19

What is the blood supply to the femoral neck?

The medial circumflex femoral artery

20

What is A?

Pectineal line

21

What is B?

Gluteal tuberosity

22

What is C?

Line aspera

23

What is D?

Medial supracondylar line

24

What is E?

Lateral supracondylar line

25

What is F?

Adductor tubercle

26

What is the result of an upper third shaft fracture?

Proximal fragment is flexed, abducted and laterally rotated. Distal fragment is adducteed lateraly rotated and elevated

27

What is the result of a middle third of the shaft fracture?

Limb shortening occurs, due to distal fragment being pulled upwards

28

What is the result of a lower third of the shaft

Limb shortening occurs due to the distal fragment being pulled upwards. The fragment is also rotated inferioly by the gastrocnemius muscle. This could interfere with popliteal artery and endager blood supply to leg and foot.

29

What is A?

Lateral epicondyle

30

What is B

Medial epicondle

31

What is C?

Facetfor attachemnt of posterior cruciate ligament

32

What is D?

Lateral condyle

33

Whatis E?

Facet for attachment of anterior cruciate ligament

34

What is F?

Medial condyle

35

What is G?

Intercondylar fossa

36

What is H?

Adductor tubercle

37

What is I?

Medial epicondyle

38

What is J?

Condyles - patella surface

39

What is K?

Lateral epicondyle