Tibia Flashcards Preview

► Med Misc 25 > Tibia > Flashcards

Flashcards in Tibia Deck (43):
1

What is the tibia?

The main bone of the leg, forming what is more commonly known as the shin

2

Where does the tibia extend?

At the proximal and distal ends

3

Where does the tibia articulate?

At the ankle and knee joints

4

What is the function of the tibia?

Weight bearing

5

What is the tibia widened by the the proximal end?

The medial and lateral condyles

6

What is the result of the widening of the tibia at the proximal end?

It aids in weight bearing

7

What do the condyles of the proximal tibia form?

A flat surface, known as the tibial plateau

8

What does the tibial plateau articulate with?

The femoral condyles

9

What is formed when the femoral condyles articulate with the tibial plateau?

The major articulation of the knee joint

10

What is located between the condyles?

A region called the intercondylar eminence

11

What does the intercondylar eminence consist of?

Two tubercles and a roughened area

12

What is the roughened area of the intercondylar eminence the main site for?

Attachment for the ligaments and menisci of the knee joint

13

What do the tibial intercondylar tubercles fit into?

The intercondylar fossa of the femur

14

Where is the tibial tuberosity found?

On the anterior surface of the proximal tibia

15

What attaches at the tibial tuberosity?

The patella ligament

16

What does the shaft of the tibia have?

Three borders and three surfaces; anterior, posterior and lateral

17

What is the start of the anterior border of the tibial shaft marked by?

The tibial tuberosity

18

Where is the anterior border of the tibial shaft palpable?

Down the anterior surface of the leg as the shin

19

What is susceptible to damage where the tibia is palpable as the shin?

The periosteal covering of the tibia

20

How is damage to the periosteal covering of the tibia present clinically?

Bruising

21

What is the posterior surface of the tibial shaft marked by?

A ridge of bone called the soleal line

22

Where does the soleal line run?

Inferomedially

23

What eventually happens to the soleal line?

It blends with the medial border of the tibia

24

What happens where the soleal line blends with the medial border of the tibia?

Part of the soleus muscle originates

25

What is the lateral border of the tibial shaft also known as?

The interosseous border

26

What does the lateral border of the tibial shaft give?

Attachment to the interosseous membrane that binds the tibia and fibula together

27

What happens to the distal end of the tibia?

It widens

28

Why does the distal end of the tibia widen?

To help with weight bearing

29

What is found on the medial side of the distal end of the tibia?

A bony projection continuing inferiorly, called the medial malleolus

30

What does the medial malleolus articulate with?

The tarsal bones

31

What is formed when the medial malleolus articulates with the tarsal bones?

Part of the ankle joint

32

What is found on the posterior surface of the distal tibia?

A groove

33

What is the groove on the posterior surface of the distal tibia the site of?

The attachment of the tibialis posterior muscle

34

What is found laterally on the distal end of the tibia?

The fibular notch

35

What is the fibular notch the site of?

The binding of fibula to tibula

36

How common are fractures of the tibia?

Relatively common

37

Who do tibial fractures most frequently occur in?

The middle aged and elderly

38

What happens if the fibula is not fractured?

It supports the tibia, and displacement of the fragments is minimal

39

What site of the tibia is most vulnerable to damage?

The proximal end of the tibia

40

What does damage to the proximal end of the tibia usually result from?

Some traumatic accident

41

What may happen in a proximal tibia fracture?

The condyles may be broke up in the fracture
Not uncommon for there to be injury to the ligaments of the knee

42

What can be fractured in the ankle?

The medial malleolus

43

What causes a medial malleolus fracture?

The ankle being twisted inwards (overinversion), and so the talus of the foot is forced against the medial malleolus, causing a spiral fracture