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BMS172 > Leg Region (4) > Flashcards

Leg Region (4) Flashcards

1
Q

What is the Tibiofibular Joint: supported by?

A

Supported By: anterior of fibular head + posterior ligament of fibular head.

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2
Q

What type of joint is the Tibiofibular Joint?

A

Plane Synovial Joint

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3
Q

What is the Tibiofibular Syndesmosis supported by?

A

anterior tibiofibular ligament and posterior tibiofibular ligament and interosseous tibiofibular ligament.

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4
Q

What type of joint is the Tibiofibular Syndesmosis ?

A

fibrous joint (therefore less movement)

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5
Q

What Type of Joint is the Talocrural Joint?

A

hinge synovial joint

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6
Q

What does the Talocrural Joint allow for?

A

Allows: 20 degree dorsiflexion, 60-90% dorsiflexion occurs here. Plantar flexion 30-15 degrees.

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7
Q

What Ligaments support the Talocrural Joint:

A

Anterior tibiofibular ligament.
Posterior tibiofibular ligament
Interosseous ligament
Interosseous Membrane

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8
Q

What are the Medial ligaments of the Ankle:

A

Anterior tibiotalar
Posterior tibiotalar
Tibiocalcaneal
Tibionavicular

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9
Q

What is an avulsion fracture?

A

Medial ligament is pulled of medial malleolus, causing talus to break into lateral malleolus (fracturing of both medial and lateral malleolus)

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10
Q

Lateral Ligaments of the Ankle:

A

Anterior talofibular
Calcaneofibular ligament
Posterior talofibular ligament.

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11
Q

What separates the anterior and posterior muscular compartments of the leg?

A

Intermuscular septa, interosseous membrane + tibia fibula.

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12
Q

What covers the anterior compartment

A

Thick fascia proximally and extensor retinacular inferiorly.

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13
Q

What are the Muscular Compartments? (include muscles in each compartment)

A

Anterior: Extensor digitorum longus, tibialis anterior and extensor hallucis longus.
Lateral Compartments: fibularis brevis + fibularis longus
Posterior: tibialis posterior, flexor digitorum longus, flexor hallucis longus. Soleus and medial and lateral head of gastrocs.

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14
Q

What is ski boot syndrome?

A

Compression of deep fibular nerve (which innervates muscles in the anterior compartment as well as the skin)

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15
Q

Tibialis Anterior:

Attach

A

Attach: lateral condyle + lateral surface of proximal half of tibia, interosseous membrane > medial + inferior surfaces of medial cuneiform and base of the 1st metatarsal.

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16
Q

Tibialis Anterior:

Action

A

Action: dorsiflexes ankle and inverts foot.

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17
Q

Tibialis Anterior:

Innervation

A

Inner: deep fibular nerve

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18
Q

Extensor Digitorum Longus

Attach

A

Attach: lateral condyle of tibia, medial surface of proximal ¾ fibula , interosseous membrane > middle and distal phalanges of lateral 4 digits.

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19
Q

Extensor Digitorum Longus

Action

A

Action: extends lateral 4 digits, dorsiflexes foot.

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20
Q

Extensor Digitorum Longus

Innervation

A

Inner: deep fibular nerve

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21
Q

Extensor Hallucis Longus

Attach

A

Attach: middle part anterior surface of fibula and interosseous membrane > dorsal aspect of base of distal phalanax of 1st digit.

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22
Q

Extensor Hallucis Longus

Action

A

Action: extends 1st digit and dorsiflexes foot.

23
Q

Extensor Hallucis Longus

Innervation

A

Inner: Deep fibular nerve

24
Q

Fibularis Tertius Attach

A

Attach: inferior ⅓ of anterior surface of fibula and interossoi=us membrane > base of 5th metatarsal .

25
Q

Fibularis Tertius Action

A

Action: dorsiflexes foot and aids in eversion.

26
Q

Fibularis Tertius Innervation

A

Inner: deep fibular nerve (L4, L5)

27
Q

Fibularis Longus:

Attach

A

Attach: head + superior ⅔ lateral surface of fibula > plantar aspect base 1st metatarsal + medial cuneiform.

28
Q

Fibularis Longus:

Action

A

Action: evert weakly + plantar flex foot.

29
Q

Fibularis Longus:

Innervation

A

Innervation: superficial fibular nerve (L5, S1, S2)

30
Q

Fibularis Brevis:

Attach

A

Attach: inferior 2.3 lateral surface of fibula > dorsal surface of tuberosity of base of 5th metatarsal.

31
Q

Fibularis Brevis:

Action

A

Action: evert weakly + plantar flex foot.

32
Q

Fibularis Brevis:

Innervation

A

Innervation: superficial fibular nerve (L5, S1, S2)

33
Q

Gastrocnemius Attach

A 
Medial head (attach): popliteal surface superior to medial condyle 
Lateral head (attach): lateral aspect of lateral condyle.
34
Q

Gastrocnemius Action

A

Action: plantar flex foot and flex the knee.

35
Q

Gastrocnemius Innervation

A

Inner: tibial nerve (S1, S2)

36
Q

Plantaris Attach

A

Attach: lateral supracondylar line on femur, oblique popliteal ligament

37
Q

Plantaris Action

A

Action: plantarflex foot.

38
Q

Plantaris Innervation

A

Inner: tibial nerve

39
Q

Plantaris Facts:

A

> Facts: absent in 5-10% of people. Used as transplant tendon.

40
Q

Soleus Attach

A

Attach: posterior head of fibular, soleal line of tibia, attaching distally to posterior surface of calcaneus

41
Q

Soleus Action

A

Action: plantar flex foot

42
Q

Soleus Innervation

A

Inner: tibial nerve

43
Q

Popliteus Attach

A

Attach: lateral surface of lateral condyle of femur, lateral meniscus > posterior surface of tibia superior to soleal line.

44
Q

Popliteus Action

A

Action: weakly flexes leg at knee, medially rotates tibia if in open chain and laterally rotates in closed chain.

45
Q

Popliteus Inner

A

Inner: tibial nerve (L4, L5, S1)

46
Q

Tibialis Posterior:

Attach

A

Attach: posterior tibia inferior to soleal line, posterior interosseous membrane, posterior fibular > navicular tuberosity, plantar aspect of medial cuneiform, cuboid calcaneous and base of metatarsals 2-4.

47
Q

Tibialis Posterior:

Action

A

Action: plantar flexes and inverts foot.

48
Q

Tibialis Posterior:

Innervation

A

Inner: tibial nerve (L4-5)

49
Q

Flexor hallucis Longus

Attach

A

Attach:inferior ⅔ posterior surface of fibula and interosseous membrane > base of 1st distal phalanx.

50
Q

Flexor hallucis Longus

Action

A

Action: Flexes 1st digit, weakly plantar flexes foot

51
Q

Flexor hallucis Longus

Innervation

A

Inner: tibial nerve (S2, S3)

52
Q

Flexor Digitorum Longus

Attach

A

Attach: medial part of posterior surface of tibia > base of 2nd and 5th distal phalanges

53
Q

Flexor Digitorum Longus

Action

A

Action: flexes lateral 4 digits, plantar flexes foot

54
Q

Innervation

A

Inner: tibial nerve (S2, S3)

BMS172 (8 decks)

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