Lecture: Leg I/II - Dunn Flashcards

1
Q

pes anserinus

A

sartorius
gracilis
semitendinosus

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2
Q

what demarcates the origins of tibialis posterior and flexor digitorum longus?

A

vertical line on posterior surface of tibia

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3
Q

fibula articualtion with tibia proximally

A

fibular facet

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4
Q

fibula articulation with tibia distally

A

fibular notch

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5
Q

what m. takes origin from lateral surface of tibia?

A

tibialis anterior

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6
Q

two m. on lateral surface of fibula

A

peroneus longus

peroneus brevis

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7
Q

three muscles on anterior surface of fibula

A

extensor digitorum longus
extensor hallucis longus
peroneus terti

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8
Q

actions of muscles of anterior compartment

A

tibialis anterior and extensor hallucis longus: dorsiflexion, inversion, supination

extensor digitorum longus and peroneus tertius: dorsiflexion, eversion and pronation

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9
Q

accessory tendon pulls on capsule to keep it from trapping in 1st MPJ joint

A

extensor hallucis capsularis

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10
Q

medial tibial stress syndrome

A

“shin splints”

  • m. micortrauma t otibialis anterior leads to small tears in periosteum underlying the m. - swelling can lead to minor compartment syndrome
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11
Q

anterior compartment neurovasculature

A

anterior tibial a.

deep peroneal n.

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12
Q

lateral compartment m. actions

A

eversion, pronation, plantarflexion

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13
Q

blood supply lateral compartment

A

peroneal a. (lies in posterior compartment)

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14
Q

actions superficial m. of posterior compartment

A

plantarflecion of talocrural joint

gastrocnemius and plantaris: flexion of knee

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15
Q

actions of deep m. of posterior compartment

A

plantarflexion, inversion, supination

popliteus: knee flexion, medial rotation of leg

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16
Q

posterior shin splints

A

microtrauma to tibialis posterior and underlying periosteum

17
Q

calcaneal tendon rupture

A
  • typically occurs in individuals with chronic calcaneal tendinitis
  • 1-5 cm proximal to calcaneal tuberosity
18
Q

neurovascualture posterior compartment

A

tibail n.

posterior tibial a and peroneal a.

19
Q

sural n. =

A

medial sural cutaneuous n. (tibail n) + communicating branch of lateral sural cutaneous n. (common peroneal n.)

20
Q

the sural n. continues in the foot as …

A

lateral dorsal cutaneous n.

21
Q

n. roots for tibial n.

A

L4-S3

22
Q

n. roots for comm. peroneal n.

A

L4-S2

23
Q

muscles innervated by tibial n.

A
popliteus
gastrocnemius
soleus
plantaris 
flexor digitorum longus
flexor hallucis longus
tibialis posterior
24
Q

muscles innervated by comm. peroneal n.

A

superficial peroneal n = peroneus longus and brevis

deep peroneal n. = tibailis anterior, extensor digitorum longus, extensor hallucis longus, peroneus tertius

25
Q

most commonly injured n. in the lower limb

A

common peroneal n.

  • vulnerable with fracture of fibular neck and knee dislocation
  • results in unopposed plantarflexion and inversion = foot drop
26
Q

inguinal ligament dermatome

A

L1

27
Q

big toe and medial foot dermatome

A

L5

28
Q

the saphenous n. is a branch of the ..

A

femoral n.

29
Q

the great saphenous v. drains into…

A

femoral v.

30
Q

the small saphenous v. drains into …

A

popliteal v.

31
Q

compartment syndrome

A
  • trauma to structures within compartments may result in hemorrhage, edema, or inflammation
  • strength of crural fascia precludes outward swelling of tissues
  • potential compression of neurovasculature leading to ischemia, necrosis or atrophy of affected tissues
  • treatment includes fasciotomy of affected compartment