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MSK 2 > Lower Leg iRA/tRA > Flashcards

Lower Leg iRA/tRA Flashcards

1
Q

normal tibial torsion

A

proximal to distal ~ 30 deg

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2
Q

What does medial malleolus articulate w/?

A

medial talar body

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3
Q

convex or concave of distal tibia in sagittal and transverse plane

A

Sagittal Plane: concave

Transverse plane: convex

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4
Q

Anterior talus is wider _________ than ______. Why?

A

wider anterior than posterior

- to aide in wedging effect for structural stability during full DF

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5
Q

What is the largest tarsal in the foot?

A

calcaneus

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6
Q

What is the primary attachment of the tibialis posterior?

A

navicular tuberosity

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7
Q

What bone is the most lateral in distal tarsal row?

A

cuboid

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8
Q

In what tendon are the sesamoid bones embedded?

A

flexor hallicus brevis

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9
Q

What muscles make up the anterior compartment of the lower leg?

A
  • tib anterior
  • extensor hallucis longus
  • extensor digitorum longus
  • fibularis tertius
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10
Q

What muscles make up the lateral compartment of the lower leg?

A
  • fibularis longus

- fibularis brevis

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11
Q

What muscles make up the superficial group of the posterior compartment of the lower leg?

A
  • gastroc
  • soleus
  • plantaris
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12
Q

What muscles make up the deep group of the posterior compartment of the lower leg?

A
  • popliteus
  • tib posterior
  • flexor digitorum longus
  • flexor hallucis longus
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13
Q

What nerve is commonly injured by an inversion injury?

A

superficial fibular nerve

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14
Q

What end of the tibiofibular joints has a capsule?

A

proximal tib fib has a capsule, distal does not

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15
Q

What kind of joint is the proximal tibfib? Distal tibfib?

A

proximal - plane synovial joint

distal - syndesmosis

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16
Q

At what joint does DF/PF occur?

A

talocrural joint

17
Q

Arthrokinematics of subtalar: ____ degree orientation from sagittal plane and ____ degree from the transverse plane

A

16 deg - sagittal

42 deg - transverse

18
Q

convex/concave rule of MTPs and IPs

A

concave proximally and convex distally

19
Q

Inversion: tilting ____ midline

Eversion: tilting _____ midline

A

inversion: towards midline
eversion: away from midline

20
Q

Supination osteokinematics

A

combination of adduction, inversion, and PF

21
Q

Pronation osteokinematics

A

combination of abduction, eversion, and DF

22
Q

Resting and closed packed position of tibiofibular

A

resting: ~ 10 deg PF
closed: full DF

23
Q

Resting and closed packed position of talocrural joint

A

resting: ~10 deg PF
closed: full DF

24
Q

Resting and closed packed position of midfoot

A

resting: ~ 10 deg PF
closed: full DF

25
Q

Resting and closed packed position of IP

A

resting: slight flexion
closed: full extension

26
Q

PF ROM

A

50 deg

27
Q

DF ROM

A

20 deg

28
Q

Supination ROM

A

45-60 deg

29
Q

Pronation ROM

A

15-30 deg

30
Q

Great toe flexion ROM

A

MTP 40 deg and IP 90 deg

31
Q

Great toe extension ROM

A

MTP 70 deg and IP 0 deg

32
Q

Functional degrees of DF needed for walking

A

10 deg

33
Q

Functional degrees of DF needed for standing up from a chair

A

17-20 deg

34
Q

Functional degrees of DF needed to descend stairs

A

20 deg

35
Q

What is the windlass effect?

A

plantar fascia resist flattening of the longitudinal arch

  • energy is stored for propulsion
  • as you flex toes during push off, arch maintained
36
Q

DF muscles and innervations (4)

A
  • tib anterior
  • extensor digitorum longus
  • extensor hallucis longus
  • fib tertius
  • all innervated by deep fibular nerve
37
Q

PF muscles and innervation (6)

A
  • gastroc
  • soleus
  • flexor digitorum longus
  • flexor hallicis longus
  • fibularis longus - superficial fibular nerve
  • tib posterior

all innervated by tibial nerve except fib longus

38
Q

Inversion muscles and innervation (2)

A
  • tib anterior - deep fibular nerve

- tib posterior - tibial nerve

39
Q

Eversion muscles and innervation (3)

A
  • fib longus - superficial fibular nerve
  • fib tertius - deep fibular nerve
  • fibularis brevis - superficial fibular nerve

MSK 2 (8 decks)

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