Chapter 8 Lower Extremity Anatomy Flashcards Preview

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Flashcards in Chapter 8 Lower Extremity Anatomy Deck (38):
1

Primary hip extensor?

Gluteus maximus

2

Primary hip flexor?

Iliopsoas

3

Primary knee extensor?

Quadriceps

4

Primary knee flexors?

Semimembranosus and semitendinosus

5

4 ligaments that make up femoroacetabular joint?

1) Iliofemoral
2) Ischiofemoral
3) Pubofemoral
4) Capitis femoris

6

What ligament attaches the head of the femur to the acetabular fossa?

Capitis femoris

7

What are the minor motions of the hip?

Anterior and posterior glide

8

What motion occurs with anterior glide of the head of the femur?

External rotation

9

What motion occurs with posterior glide of the head of the femur?

Internal rotation

10

Etiologies of hip external rotation SD?

Piriformis or iliopsoas spasm

11

Etiologies of hip internal rotation SD?

Spasm of internal rotators

12

3 joints that make up the knee?

1) Tibiofemoral
2) Patellofemoral
3) Tibiofibular

13

What is the largest joint in the body?

Tibiofemoral

14

What is the origin and insertion of the ACL?

Originates at posterior aspect of femur, attaches to anterior aspect of tibia

15

Origin and insertion of the PCL?

Originates at anterior aspect of femur and inserts on posterior aspect of tibia

16

Which ligament articulates with the medial meniscus and helps prevent valgus stress at the knee?

Medial collateral ligament

17

Attachments of the lateral collateral ligament?

Femur and fibula

18

Mvt of the tibiofibular joint occurs with what motions of the foot?

Pronation and supination

19

What motion occurs when the fibular head glides anteriorly?

Pronation

20

What motion occurs when the fibular head glides posteriorly?

Supination

21

Pronation motions?

Dorsiflexion, eversion, abduction

22

Supination motions?

Plantarflexion, inversion, adduction

23

Pronation of foot causes what fibular motion?

Causes talus to push distal fibula posteriorly allowing anterior glide proximally

24

Supination of the foot causes what fibular motion?

Causes anterior talofibular ligament to pull distal fibula anteriorly, and allows proximal fibula to glide posteriorly

25

Femoral nerve roots?

L2-4

26

Sciatic nerve roots?

L4-S3

27

Femoral n innervations?

Quads, iliacus, sartorius and pectineus

28

Which foramen does the sciatic n pass thru?

Greater sciatic foramen

29

85% of population, the sciatic n will be in what relation to piriformis?

Inferior to piriformis

30

Innervation of short head of biceps femoris?

Peroneal division of sciatic n

31

Angulation of head of the femur?

Normally 120-135 degrees

32

Coxa vara?

Angulation of femur

33

Coxa valga?

Angulation of femur >135

34

Q angle?

Formed by intersection of a line from ASIS thru middle of patella, and a line from tibial tubercle thru middle of patella

35

Normal Q angle?

10-12 degrees

36

Genu valgum?

Increased Q angle (knocked-kneed)

37

Genu varum?

Decreased Q angle (bow-legged)

38

What ligament prevents hyperextension of knee?

ACL