foot and ankle rmsk Flashcards

1
Q

Blood vessel landmark for deep peroneal nerve

A

anterior tibial artery

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2
Q

what is relationship of sustentaculum tali to medial tendons

A

TP- Dorsal and superficial FDL- Immediately superficial FHL- plantar to ST in a bony groove of calcaneus

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3
Q

Tibial nerve is inbetween which tendons supramalleolar

A

FDL and FHL

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4
Q

Origin of common plantar digital nerves

A

medial and lateral plantar branch of tibial nerve

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5
Q

What is the significance of some fluid within the sheath of the TP tendon beyond the medial mallelus

A

usually normal

at navicular no fluid

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6
Q

TP fluid at the navicular

A

should not be present since tendon sheath is absent

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7
Q

what comprises knot of henry

A

FDL and FHL ad midfoot

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8
Q

Insertion of Peroneous longus

A

median cuneiform and first metatarsal base

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9
Q

Insertion of peroneous brevis

A

5th metatarsal base

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10
Q

AITFL tear what other structure should be evaluated

A

Interosseou membrane… normally a thin and hyperechoic and bilaminarstructure

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11
Q

Muscles under the achilles tendon?

A

soleus, Kager fat pad, then FHL prxomally.. distally only kager fat pad and plantaris tendon

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12
Q

Retrocalcaneal bursa normal distention

A

2.5mm AP

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13
Q

Vascular land mark of sural nerve

A

lesser saphenous nerve.

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14
Q

Examples of commplex fluid

A

infection, hemorrhage, gout

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15
Q

lack of flow on doppler, compressibility, internal echo movement on pressure

A

complex fluid

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16
Q

COmmon area for RA sa foot?

A

Distal 5th

17
Q

COmmon area for gout sa foot?

A

first metatarsal head

18
Q

Double contour sign and serum urate levels?

A

ddisappear if less than 6mg/dL

19
Q

Posterior tibialis tendon fluid

A

normal up to 4mm.. but >5.8 means dysfunction and eval spring ligament also

NO FLUID at NAVICULAR

20
Q

Hyperemia on doppler for complex fluid

A

synovial hypertrophy

21
Q

Insertion of Tibialis anterior

A

medial cuniform and base of 1st MT

22
Q

Site of tibialis anterior tendon tear

A

3cm of its insertion.

23
Q

Achilles tendon has no tendon sheath instead it has a

A

paratenon

24
Q

Tendinosis can be focal or

A

diffusely involving the tendon with fusiform enlargement

25
Q

Increased blood flow in achilles tendon represents

A

neovascularity not inflammation

26
Q

technique when evaluating achilles tendon flow

A

floating with thick gel , do not dorsiflex

27
Q

DIfferentiate achilles tendon enthesophytes from degenerative and inflammatory

A

inflammatory will have hyperemia,

28
Q

Haglund syndrome

A

distal achilles tendon abnormality, retrocalcaneal and retro-achilles bursal distention, prominent posterosuperior calcaneus

29
Q

Common site of achilles tear

A

2-6cm proximal to calcaneal attachment

30
Q

Artifact from tendon stump

A

posterior accoustic shadowing (indirect sign)

31
Q

accessory soleous muscle location

A

above kager fat pad and inserts to calcaneus

32
Q

Maisonneuve fracture

A

from high fibular fracture after interosseus ligament injury

33
Q

Stress fracture early finding

A

foacl hypoechogenicity along cortex from hematoma or periostitis, tep off deformity o fracture line

34
Q

Location of peroneus tertius

A

lateral to extensor digitorum longus and extends to base of 5th metatarsal