Lower limb 3 Flashcards

1
Q

3 compartments of lower leg and the innervation of each compartment

A

Anterior -> deep fibular nerve

Lateral -> superficial fibular nerve

Posterior -> tibial nerve

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2
Q

4 muscles in anterior leg

(and what muscle is in this picture)

A

tibialis anterior

extensor digitorum longus

extensor hallicus longus

fibularis tertius

(fibularis tertisu is in the picture)

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3
Q

Anterior compartment of anterior leg main actions on ankle joint and toes

A

ankle -> dorsiflexion

toes -> extension

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4
Q

Innervation of anterior compartment of leg

A

Deep fibular nerve

(branch from common fibular)

fibular= peroneal

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5
Q

Terminal branch of popliteal artery supplying anterior leg

A

Anterior tibial artery

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6
Q

Which artery runs midway between malleoli?

A

Dorsalis pedis

(bracnches from anterior tibial artery)

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7
Q

2 muscles of lateral compartment of leg

A

fibularis longus

fibularis brevis

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8
Q

Action of lateral compartment of leg muscles on foot and ankle

A

Foot -> eversion

Ankle -> plantarflexion (weak)

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9
Q

Which fibular nerve supplies lateral compartment?

A

Superficial fibular nerve

(remember that fibular=peroneal, i don’t fucking know why)

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10
Q

Common fibular nerve injury

A

Foot drop

Anterior and lateral muscles affected

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11
Q

Articular surfaces of ankle

A

distal end of tibia & fibula

superior part of talus

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12
Q

When is malleolar grip tightest?

A

Dorsiflexion

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13
Q

When is the ankle joint most unstable?

A

Plantarflexion

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14
Q

Which ligament of ankle is weakest?

A

Lateral ankle ligament

made up of 3 ligamanets:

  • anteiror talo-fibular ligament
  • posterior talo-fibular ligament
  • calcaneo-fibular ligament
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15
Q

Which ligament of ankle is also known as deltoid ligament?

A

Medial collateral ligament

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16
Q

During which movement of the subtalar joint does injury most commonly occur?

A

Inversion

(can also be injury during plantarflexion and weight-bearing)

17
Q

Proximal tibio-fibular joint type

A

Synovial plane

18
Q

distal tibio-fibular joint type

A

Fibrous

19
Q

Sensory nerves of the leg

A
20
Q

Where is the cutaneous innervation of the saphenous nerve

A

Medial aspect of leg

21
Q

Which muslce can cause entrapment of the common fibular nerve

A

Fibularis longus

22
Q

What is the cutanoeus innervation of the sural nerve

A

Back of leg on the lateral side

Lateral side of the foot