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► Med Misc 25 > Tibia > Flashcards

Tibia Flashcards

1
Q

What is the tibia?

A

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

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2
Q

Where does the tibia extend?

A

At the proximal and distal ends

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3
Q

Where does the tibia articulate?

A

At the ankle and knee joints

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4
Q

What is the function of the tibia?

A

Weight bearing

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5
Q

What is the tibia widened by the the proximal end?

A

The medial and lateral condyles

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6
Q

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

A

It aids in weight bearing

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7
Q

What do the condyles of the proximal tibia form?

A

A flat surface, known as the tibial plateau

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8
Q

What does the tibial plateau articulate with?

A

The femoral condyles

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9
Q

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

A

The major articulation of the knee joint

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10
Q

What is located between the condyles?

A

A region called the intercondylar eminence

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11
Q

What does the intercondylar eminence consist of?

A

Two tubercles and a roughened area

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12
Q

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

A

Attachment for the ligaments and menisci of the knee joint

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13
Q

What do the tibial intercondylar tubercles fit into?

A

The intercondylar fossa of the femur

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14
Q

Where is the tibial tuberosity found?

A

On the anterior surface of the proximal tibia

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15
Q

What attaches at the tibial tuberosity?

A

The patella ligament

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16
Q

What does the shaft of the tibia have?

A

Three borders and three surfaces; anterior, posterior and lateral

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17
Q

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

A

The tibial tuberosity

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18
Q

Where is the anterior border of the tibial shaft palpable?

A

Down the anterior surface of the leg as the shin

19
Q

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

A

The periosteal covering of the tibia

20
Q

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

A

Bruising

21
Q

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

A

A ridge of bone called the soleal line

22
Q

Where does the soleal line run?

A

Inferomedially

23
Q

What eventually happens to the soleal line?

A

It blends with the medial border of the tibia

24
Q

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

A

Part of the soleus muscle originates

25
Q

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

A

The interosseous border

26
Q

What does the lateral border of the tibial shaft give?

A

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

27
Q

What happens to the distal end of the tibia?

A

It widens

28
Q

Why does the distal end of the tibia widen?

A

To help with weight bearing

29
Q

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

A

A bony projection continuing inferiorly, called the medial malleolus

30
Q

What does the medial malleolus articulate with?

A

The tarsal bones

31
Q

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

A

Part of the ankle joint

32
Q

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

A

A groove

33
Q

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

A

The attachment of the tibialis posterior muscle

34
Q

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

A

The fibular notch

35
Q

What is the fibular notch the site of?

A

The binding of fibula to tibula

36
Q

How common are fractures of the tibia?

A

Relatively common

37
Q

Who do tibial fractures most frequently occur in?

A

The middle aged and elderly

38
Q

What happens if the fibula is not fractured?

A

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

39
Q

What site of the tibia is most vulnerable to damage?

A

The proximal end of the tibia

40
Q

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

A

Some traumatic accident

41
Q

What may happen in a proximal tibia fracture?

A

The condyles may be broke up in the fracture

Not uncommon for there to be injury to the ligaments of the knee

42
Q

What can be fractured in the ankle?

A

The medial malleolus

43
Q

What causes a medial malleolus fracture?

A

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

► Med Misc 25 (69 decks)

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