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Ankle > Ankle and Foot - 2 > Flashcards

Ankle and Foot - 2 Flashcards

2
Q

Name the bones of the ankle and foot

A

tibia, fibula, talus, calcaneus, navicular, cuboid, medial cuneiform, middle cuneiform, lateral cuneiform, metatarsals, phalanges, sesamoids

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3
Q

Arches of the foot

Transverse

A

do later

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4
Q

Arches of the foot

Longitudinal - Medial

A

do later

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5
Q

Arches of the foot

Longitudinal - Lateral

A

do later

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6
Q

Factors contributing to bony stability in the foot

2nd metatarsal on the middle cuneiform

A

do later

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7
Q

Factors contributing to bony stability in the foot

Cubonavicular joint

A

do later

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8
Q

Factors contributing to bony stability in the foot

Talocrural joint

A

do later

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9
Q

Inferior tibiofibular joint

Classify the inferior tibiofibular joint

A

syndesmosis - fibrous

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10
Q

Inferior tibiofibular joint

Osteokinematics

A

conjunct movement only in response to movement at the ankle

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11
Q

Inferior tibiofibular joint

Arthrokinematics

A

anterior posterior glides (minimal)

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12
Q

Inferior tibiofibular joint

Capsular pattern

A

Pain when mortise is splayed

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13
Q

Inferior tibiofibular joint

Resting position

A

approximatley 10 deg plantar flexion

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14
Q

Inferior tibiofibular joint

Close packed position

A

weight-bearing dorsiflexion of the talocrural joint provides the greatest ligament tension

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15
Q

Inferior tibiofibular joint

Articular surfaces

A

medial aspect of distal fibula - convexarticular facet

fibular notchon medial aspect of tibia - concave articular facet

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16
Q

Inferior tibiofibular joint

Articular cartilage

A

Syndesmosis with minimal articular cartilage

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17
Q

Inferior tibiofibular joint

Joint capsule

A

no articular capsule; the capsule if the talocrural joint projects proximally to the inferior joint margin

18
Q

Interosseus Membrane

A

oblique fibrous band connecting the medial border of the fibula with the lateral border of the tibia.
Divides the lower limb into an anterior and a posterior compartment and increases the area available for muscle attachment
a large, ovoid opening at the proximal end of the membrane transmits the anterior tibial artery
a foramen for the perforating branch of the peroneal artery exists at the dfistal aspect of the membrane
the distal border of the membrane blends with the interosseous ligament of the inferior tibiofibular joint

19
Q

Inferior tibiofibular joint

Ligaments

A

Anterior tibiofibular ligament
Interosseous ligament
Posterior tibiofibular ligament

20
Q

Inferior tibiofibular joint

Segmental articular supply

A

L4, L5, S1, S2

21
Q

Talocrual joint

Articular surfaces

A

mortise joint
dome of the talus
- convex anterior/posterior
- concave medial/lateral
posterior aspect of the dome is narrower than the anterior aspects
corresponding facets of the distal tibia and the fibula are reciprocally curved
articulates posteriorly with the inferior transverse tibiofibular ligaments

22
Q

Talocrual joint

Arthrology - capsule

A

loose, thin anteriorly and posteriorly
supported on each side by collateral ligaments
posterior- blends with the inferior transverse ligament
surrounds joint, attaching to the borders of the articular surfaces of the tibia, malleoli and talus (except neck)
extends superiorly to the inferior tobiofibular joint

23
Q

Talocrual joint

Arthrology - ligaments

A

deltoid ligament
anterior talofibular ligament
calcaneofibular ligament
posterior talofibular ligament

24
Q

Talocrual joint

Articular supply - segmental

A

L4, L5, S1, S2

25
Q

Talocrual joint

Classification

A

synovial
compound (includes the inferior tibiofibular joint and there are also two articulating surfaces/facets; one on the distal tibia and one on the distal fibula)
modified sellar

26
Q

Talocrual joint

Degrees of motion

A

one

27
Q

Talocrual joint

Osteokinematics - mechanical axis

A

oblique transverse axis (slopes 10 deg inferiorly from medial malleolus to lateral malleolus) through the body of the talus

28
Q

Talocrual joint

Osteokinematics - Movements

A

Dorsiflexion / Plantar flexion

 - impure swing about an obliwue transverse axis in the saggital plane
 - conjunct external rotation (slight abduction and eversion) of the talus with dorsiflexion and conjunct internal rotation (slight adduction and inversion) of the talus with plantar flexion
 - approx 26 deg dorsiflexion and approx 48 deg plantar flexion
29
Q

Talocrual joint

Arthrokinematics - Accessory glides

A

Dorsiflexion - posterior glide (with conjunct external rotation) of the talus on the tibia and fibula

Plantarflexion - anterior glide (with conjunct internal rotation) of the talus on the tibia and fibula

30
Q

Talocrual joint

End feel

A

Capsular, dorsiflexion may be a soft tisue stretch

31
Q

Talocrual joint

Resting position

A

10 deg plantar flexion

32
Q

Talocrual joint

Close packed position

A

full dorsiflexion

Ankle (2 decks)

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