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AD ABOS Part I > Foot and Ankle > Flashcards

Foot and Ankle Flashcards

1
Q

Biomechanical etiology for lack of heel-rise in patients with posterior tibial tendon dysfunction.

A

Failure of posterior tibial tendon to lock the transverse tarsal joints.

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2
Q

Transverse tarsal joints.

A

Calcaneocuboid and talonavicular joints.

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3
Q

Bones of the hindfoot.

A

Calcaneus, talus, cuboid.

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4
Q

Eponym of the tarsometatarsal joints.

A

Lisfranc joint.

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5
Q

Eponym of the transverse tarsal joints.

A

Chopart joint.

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6
Q

The first metatarsal bone bears ____% of the weight through the foot during gait.

A

50%

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7
Q

%-gait cycle in stance phase versus swing phase.

A

60% stance

40% swing

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8
Q

Definition of walking.

A

Period of double-limb support with always having one foot in contact with ground throughout gait cycle.

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9
Q

During swing phase the anterior tibialis contracts concentrically or eccentrically?

A

Concentrically.

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10
Q

During heel strike phase of gait the anteiror tibialis contract concentrically or eccentrically?

A

Eccentrically.

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11
Q

Coronal alignment of hindfoot during heel strike.

A

Everted (unlocked for energy absorption).

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12
Q

ABI of 1.3 or greater indicative of this.

A

Calcified vessels.

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13
Q

Toe pressure threshold predictive for healing.

A

Greater than 40 mmHg.

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14
Q

Transcutaneous oxygen pressure threshold predictive of healing.

A

Greater than 30 mmHg.

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15
Q

Most predictive sign for development of foot ulceration.

A

Neuropathy diagnosed with 5.07 Semmes-Weinstein monofilament exam.

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16
Q

Positive Mulder sign indicates this.

A

Interdigital neuroma.

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17
Q

How to perorm Mulder test.

A

Apply dorsal pressure to web space. Compress metatarsal heads. Poisitive test is audible click with radiating pain into affected toes.

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18
Q

Ankle anterior drawer test tests for this.

A

Stability of lateral ankle.

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19
Q

Ankle varus talar tilt test tests for this.

A

Stability of lateral ankle.

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20
Q

Ankle anterior drawer test evaluates competence of this ligament.

A

Anterior talofibular ligament.

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21
Q

Inversion of ankle in dorsiflexion evaluates this ligament.

A

Calcaneofibular ligament.

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22
Q

Purpose of Canale view of foot.

A

Talar neck view for fracture.

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23
Q

Purpose of Broden view of foot.

A

Subtalar joint visualization.

24
Q

Normal hallux valgus angle.

A

Less than 15 degrees.

25
Q

Normal first-second intermetatarsal angle.

A

Less than 9 deg.

26
Q

Normal hallux valgus interphalangeus angle.

A

Less than 10 deg.

27
Q

Normal distal metatarsal articular angle.

A

Less than 10 deg.

28
Q

Hallux varus most likely caused by this.

A

Iatrogenic from hallux valgus surgery.

29
Q

Surgical treatment of flexible hallux varus deformity.

A

EHB tenodesis.

30
Q

Characteristic hammertoe deformity.

A

Flexion of the PIP joint.

31
Q

Description of claw-toe deformity.

A

Flexion of PIP and DIP joints with hyperextended MTP joint.

32
Q

Description of mallet toe deformity.

A

Isolated flexion deformity of the DIP joint.

33
Q

Key component of crossover toe deformity.

A

Disruption of the plantar plate of MTP joint.

34
Q

Radiographic characteristics of Freiberg disease

A

Resorption of central metatarsal bone adjacent to articular surface with flattening of MT head.

35
Q

Turf toe.

A

Forced dorsiflexion resulting in avulsion of plantar plate off base of the phalanx and proximal migration of sesamoids.

36
Q

Cock up deformity of the hallux results from this.

A

Excision of both sesamoids.

37
Q

Medial sesamoidectomy may result in this ____, while lateral sesamoidectomy may result in this ____.

A

Hallux valgus

Hallux Varus

38
Q

Morton neuroma commonly found here.

A

Between 3rd and 4th metatarsals.

39
Q

Hindfoot varus deformity corrected with Coleman block test.

A

Fore-foot driven hindfoot varus.

40
Q

Characterization and tx of grade I and II hallux rigidus.

A

Pain at extreme ROM only. Dorsal cheilectomy.

41
Q

Most common cause of adult-acquired flatfoot deformity.

A

Posterior tibialis tendon dysfunction.

42
Q

Primary dynamic support for the arch of the foot.

A

Posterior tibialis tendon.

43
Q

Primary static stabilizer of the talonavicular joint.

A

Spring ligament.

44
Q

Calcaneonavicular ligament.

A

Spring ligament.

45
Q

Talo-first MT angle greater than ____ deg signifies pes planus.

A

4 deg.

46
Q

Normal calaneal pitch.

A

17-32 deg.

47
Q

Compression of the first branch of the lateral plantar nerve.

A

Baxter neuritis.

48
Q

Grade I diabetic foot ulcer.

A

Localized superficial ulcer without tendon or bone involvement.

49
Q

Grade II diabetic foot ulcer.

A

Deep ulcer with exposed tendon or joint capsule.

50
Q

Grade III diabetic foot ulcer.

A

Exposed bone/osteomyelitis.

51
Q

Most common location of Charcot arthropathy of foot.

A

Midfoot (type I).

52
Q

Pathophysiology of diabetic ostemyelitis.

A

Continguous to open skin wound (hematogenous rare).

53
Q

Other procedures necessary for Lisfranc amputation.

A

Peroneal tendon transfer to cuboid and Achilles lengthening.

54
Q

Other procedures for Chopart amputation

A

Tib ant transfer to talus and achilles lengthening.

55
Q

Metatarsal bone most common to have stress fracture.

A

2nd

56
Q

2nd MT stress fracture classic in this population.

A

Amenorrheal dancers.

57
Q

This artery carries the main supply to the talar body.

A

Artery of the tarsal canal.

AD ABOS Part I (9 decks)

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