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Anatomy Second Semester > Posterior Leg And Ankle Joint > Flashcards

Posterior Leg And Ankle Joint Flashcards

1
Q

How many muscles are within the posterior compartment of the leg

A

3 superficial and 4 deep

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2
Q

What is the common insertion of all the superior muscles

A

The posterior surface of calcaneus via tendocalcaneus

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3
Q

Where do the tendons of the deep muscles pass

A

Behind the medial malleolus to the plantar surface of the foot

EXCEPT POPLITEUS

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4
Q

Attachment of gastrocnemius

A

Medial head - popliteal surface of the femur superior to the medial condyle
Lateral head - The lateral aspect of the lateral condyle of the femur

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5
Q

Innervation of gastrcnemius

A

Tibial nerve (S1, S2)

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6
Q

Function of gastrcnemius

A

Plantarflexion of the ankle joint

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7
Q

Attachment of soleus

A

The soleal line of the tibia, upper 1/3rd of the posterior fibula and the tendinous arch between the bony attachments

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8
Q

Innervation of soleus

A

Tibial nerve (S1, S2)

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9
Q

Function of soleus

A

Plantarflexes the ankle

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10
Q

Attachment of popliteus

A

Lateral condyle of the femur and the lateral meniscus

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11
Q

Insertion of popliteus

A

The popliteal area of the tibia

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12
Q

Innervation of popliteus

A

Tibial nerve (L4-S1)

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13
Q

Function of popliteus

A

Unlocking the knee joint by laterally rotating the femur on a fixed tibia

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14
Q

What are the superficial muscles

A

Gastronemius, soleus and plantaris

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15
Q

What are the deep muscles

A

Popliteus, flexor digitorum longus, flexor hallucis longus and tibialis posterior

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16
Q

Attachment of flexor digitorum longus

A

Posterior tibia

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17
Q

Insertion of flexor digitorum longus

A

Base of the distal phalanx of digits 2-4

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18
Q

Innervation of flexor digitorum longus

A

Tibial nerve (L5-S2)

19
Q

Function of flexor digitorum longus

A

Flexes digits 2-4 and weakly plantarflexes the ankle

20
Q

Attachment of tibialis posterior

A

Posterior surface of the tibia, fibula and interosseous membrane

21
Q

Insertion of tibialis posterior

A

Tuberosity of navicular, cuniforms, cuboid, sustentaculum tali of calcaneus and the base of the 2nd, 3rd and 4th metatarsals

22
Q

Innervation of tibialis posterior

A

Tibial nerve (L4, L5)

23
Q

Function of tibialis posterior

A

Plantarflexes the ankle and inverts the foot

24
Q

Path of the tibials posterior tendon

A

Passes deep to flexor digitorum longus and runs in the groove posterior to the medial maleolus

25
Q

Medial to lateral arrangement of tendons at the ankle joint

A

Tibialis posterior, flexor digitorum longus and flexor hallucis longus

TOM, DICK AND HARRY

26
Q

What is found between the flexor digitorum longus and flexor hallucis longus tendons

A

Posterior tibial vessels and tibial nerve

27
Q

What does the posterior tibial artery terminate as

A

The medial and lateral plantar arteries

28
Q

What is the inferior tibiofibular joint

A

A syndemosis

29
Q

What is the interosseous tibiofibular ligament continuous with

A

The interosseous membrane

30
Q

What ligaments are involved in the inferior tibiofibular joint

A

Anterior and posterior ligaments

31
Q

What does the movement of the inferior tibofibular joint accommodate for

A

The wedging of the trochlea of the talus during dorsiflexion

32
Q

What is involved in the ankle joint

A

The malleolar mortise and the trochlea of the talus

33
Q

What is the malleolar mortise

A

The distal ends of the tibia and fibula

34
Q

What does the ankle joint allow for

A

20-30 dorsiflexion

30-50 plantarflexion

35
Q

Where does the capsule of the ankle joint join

A

The articular margins and anterior extends onto the neck of the talus

36
Q

What supports the joint laterally and medially

A

Strong collateral ligaments

37
Q

How many collateral ligaments are there

A

3

38
Q

What are the collateral ligaments

A

Anterior talofibular, posterior talofibular and calcaneofibular ligaments

39
Q

What does the anterior talofibular ligament attach to

A

The neck of the talus

40
Q

Where does the posterior talofibular attach to

A

The lateral surface of the calcaneus

41
Q

Where does the calcaneofibular ligament attach to

A

The lateral surface of the calcaneus

42
Q

What are the medial collateral ligaments called

A

The deltoid ligaments

43
Q

Where does the deltoid ligament fan out from

A

The medial malleolus

44
Q

What are the 4 parts of the deltoid ligament

A

Anterior tibiotalar, tibionavicular, tibiocalcaneal and posterior tibiotalar

Anatomy Second Semester (27 decks)

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