1. Tibia & Fibula Flashcards

1
Q

overall fxn of tibia

A

directly articulates w/ femur

weight is transferred thru condyles

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2
Q

overall fxn of fibula

A

serves as attachment site for muscles

not much weight/if at all is transferred

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3
Q

name the structure on the tibial plateau:

in green

what attaches here?

A

tibial tuberosity;

patellar ligament/tendon, & quadriceps tendon both attach here

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4
Q

name the structure on the tibial plateau:

in BLUE

A

intercondylar eminence/ prominences

*aka “spines” or “processes”

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5
Q
  1. name the structure(s) on the tibial plateau:

in yellow

  1. What attaches here?
A

anterior intercondylar area

ACL attaches here

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6
Q
  1. name the structure(s) on the tibial plateau:

in purple

  1. What attaches here?
A

posterior intercondylar area

PCL attaches

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7
Q

which color is the MEDIAL articular surface?

how do you know?

A

pink

•medial condyle is elongated, larger, less C-shaped,

whereas lateral is more C-shaped

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8
Q

which bone is this?

identify the surfaces

A

tibia

  1. lateral surface - more concave
  2. medial surface - less concave
  3. posterior surface
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9
Q

identify MEDIAL surface?

what attaches here?

A

2.

pes anserinas attaches here

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10
Q

on what surface is the nutrient foramen located?

what is it a branch of?

A

posterior surface (3)

nutrient artery is a branch of the posterior tibial artery (near it’s origin)

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11
Q

name the borders

A
  1. anterior border
  2. medial border
  3. lateral/interosseus border
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12
Q

name the muscular compartments located on the tibia

which surface does it correspond with?

A

(1) anterior compartment muscles (on lateral surface)
(3) posterior compartment muscles (on posterior surface)

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13
Q

describe the course of the anterior border of the tibia?

A

starts from TIBIAL TUBEROSITY proximally,

extends down anteriorly

forms anterior border of medial malleolus

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14
Q

describe origin and course of soleal line

A

starts below articulation of tibia and fibula

descends obliquely towards medial side, joining medial border

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15
Q

what inserts ABOVE soleal line?

what originates ON the soleal line?

A

popliteus inserts above soleal line (deep muscle of posterior compartment)

soleus originates ON the soleal line

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16
Q

the vertical line of tibia separates which 2 muscle attachments?

A

Tibialis posterior (laterally) and

Flexor digitorum longus (medially)

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17
Q

relationship of nutrient foramen and vertical line?

A

nutrient foramen is on posterior surface, LATERAL to the vertical line

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18
Q

where does the fibula attach distally?

what type of joint is this?

A

at the fibular notch

forms a syndesmosis

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19
Q

shape of articular facet on tibia for the talus?

A

comma shaped

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20
Q

from the lateral view, which COLLICULUS extends further distally?

A

the anterior colliculus

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21
Q

name the grooves, from medially –> laterally

on the posterior view of the tibia

A
  • medial malleolus
  • groove for TIBIALIS POSTERIOR
  • groove for FLEXOR HALLUCIS LONGUS
  • fibular notch
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22
Q

name the inferior surface of the tibia, which articulates w/ dome of the talus

A

the PLAFOND

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23
Q

of the plafond, which surface is longer?

(anterior/posterior)

A

Anterior is longer than posterior

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24
Q

CC: Trimalleolar fx includes…

A

Posterior malleolus (can incl part of plafond), medial malleolus, and malleolus of talus

25
Q

significance of colliculi of tibia?

A

• Important attachment sites for ligaments/muscles, like deltoid ligaments of the ankle

26
Q

where is apex of fibula located, relative to tibia?

A

approx 2 cm inferior;

lateral and posterior, on the tibial condyle

27
Q

how to side a fibula?

A

take distal end;

facet is inverted triangle, & malleolar fossa is where you place the thumb.

You have the correct side if the thumb is in fossa and does NOT cross over the facet

28
Q

identify bone:

name the key landmarks.

A

fiibula:

apex, head, neck, and medial flat portion to articulate w/ tibia

29
Q

name key landmark on distal fibula

A

lateral malleolus

30
Q

which muscles/ligs attach at:

head of fibula

A
  • biceps femoris muscle
  • lateral (fibular) collateral ligament
31
Q

cc: clinical significance of neck of fibula

A

neck is weak area and is susceptible to fx

32
Q

which nerve “Swoops” around the neck/superior aspect of fibula?

A

common fibular nerve

33
Q

what are the 3 subcutaneous areas of the fibula?

A
  1. head of fibula
  2. triangular area immediately above lateral malleolus
  3. lateral malleolus
34
Q

identify/name the borders

A
  1. top left: anterior
  2. top right: interosseus CREST
  3. bottomr right: medial
  4. bottom left: posterior
35
Q

identify/name the surfaces

A
  1. top: anterior/medial surface
  2. right: posterior medial surface
  3. bottom: posterior lateral surface
  4. left: lateral surface
36
Q

name the compartments

A
  1. anterior
  2. posterior
  3. lateral
37
Q

identify the bones;

name the compartments

A

right and larger is TIBIA; left and smaller is FIBULA

  1. ANTERIOR
  2. N/A
  3. POSTERIOR
  4. LATERAL
38
Q

COMPARTMENT 1: identify

  • muscle category?
  • action?
  • pre or postaxial?
  • anterior or posterior division?
A
  • anterior compartment;
  • dorsiflexors/extensors
  • post-axial
  • posterior division
39
Q

COMPARTMENT 2: identify

muscle category?

action?

pre or postaxial?

anterior or posterior division of ventral rami?

A
  • lateral compartment
  • evertors/plantar flexors
  • post-axial
  • posterior division
40
Q

COMPARTMENT 3: identify

  • muscle category?
  • action?
  • pre or postaxial?
  • anterior or posterior division of ventral rami?
A
  • posterior compartment
  • flexors/plantar flexors
  • preaxial
  • anterior division
41
Q

name the 4 landmarks on the distal fibula

A
  • purple: attachment of interosseus tibiofibular ligament
  • green: triangular articular facet for talus
  • blue: apex of lateral malleolus
  • yellow: lateral malleolar fossa
42
Q

what is found behind the lateral malleolar fossa?

A

malleolar crest

a combined tendon of the fibularis longus and fibularis brevis runs behind the lateral malleolus

43
Q

gluteus maximus and tensor fasciae latae via iliotibial tract:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. gluteal region
  2. tubercle of IT band/Gerdy’s tubercle
44
Q

quadriceps femoris:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. anterior comparmtent of thigh
  2. tibial tuberosity
45
Q

sartorius:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. anterior compartment of thigh
  2. superior part of medial surface of tibia (pes anserinus)
46
Q

gracilis:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. medial comparetment of thigh
  2. superiror part of medial surface of tibia (pes anserinus)
47
Q

semitendinosus:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. posterior compartment of thigh
  2. superior part of medial surface of tibia (pes anserinus)
48
Q

semimembranosus:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. posterior compartment of thigh
  2. posterior part of medial condyle of tibia
49
Q

biceps femoris:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. posterior compartment of thigh
  2. lateral side of head of fibula
50
Q

tibialis anterior

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. anterior compartment of leg
  2. lateral condyle and superior half of lateral surface of tibia & interosseus membrane
51
Q

extensor digitorum longus:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. anterior compartment of leg
  2. lateral condyle of tibia, and superior 3/4 of medial surface of fibula and interosseus membrane
52
Q

extensor hallucis longus:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. anterior compartment of leg
  2. middle part of medial surface of fibula & interosseus membrane
53
Q

fibularis tertius:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. anterior compartment of leg
  2. inferior 1/3 of medial surface of fibula and interosseus membrane
54
Q

fibularis longus:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. lateral compartment of leg
  2. head and superior 2/3 of lateral surface of fibula
55
Q

fibularis brevis:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. lateral compartment
  2. inferior 2/3 of lateral surface of fibula
56
Q

soleus:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. SUPERFICIAL posterior compartment of leg
  2. multiple attachments
    • posterior aspect of head & superior 1/4 of posterior surface of fibula
    • soleal line & middle 1/3 of medial border of tibia
    • tendinous arch extending between bone attachments
57
Q

popliteus:

  1. name region/compartment
  2. list distal attachment/insertion
A
  1. DEEP posterior compartment of leg
  2. posterior surface of tibia; superior to soleal line
58
Q

flexor hallucis longus:

  1. name region/compartment
  2. list PROXIMAL attachment/insertion
A
  1. DEEP posterior compartment of leg
  2. inferior 2/3 of posterior surface of fibula; inferior part of interosseus membrane
59
Q

tibialis posterior:

  1. name region/compartment
  2. list PROXIMAL attachment/insertion
A
  1. deep posterior compartment of leg
  2. interosseus membrane; posterior surface of tibia inferior to soleal line; posterior surface of fibula