S2 L6: Foot Orthosis (FO) Flashcards

1
Q

3 function of foot in gait

A
  1. Shock absorption
  2. Adaptation to surface
  3. Propulsion
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2
Q

_____ ______ are appliances that apply forces to the foot. Whether immobilized, corrects, or makes the feet adjust to several environments during ambulation.

A

Foot Orthoses

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3
Q

Purposes of foot inserts

A

Pain relief & too improve the wearer’s transition during stance phase

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4
Q

Internal modifications inside the shoe made of resilient materials to reduce impact shock and shear, brought about by ambulation due to the ground reaction force.

A

Inserts

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5
Q

T/F: Foot inserts are recommended for pt who suffers from diabetic neuropathy.

A

True

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6
Q

This type of foot insert acts like a second skin. It tends to reduce gait unsteadiness by improving proprioception from the increased foot contact area.

A

Full-length insert (full length orthosis)

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7
Q

T/F: Full-length insert (full-length orthosis) is used to relieve pain and activity limitation particularly associated with PES PLANUS or individuals who have a very high arch deformity.

A

False.
Pes Planus —> Pes Cavus

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8
Q

An increased caved position of the longitudinal arch, most common is the Medial Longitudinal arch

A

Pes Cavus

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9
Q

Pt suffers from flat foot deformity.

A

Pes Planus

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10
Q

Internal modification inserted inside the shoe and is placed along the metatarsals.

A

Metatarsal Pad

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11
Q

The convex component protects the metatarsal pad from ______ during the ground-reaction force in _____.

A
  1. Heating too much
  2. Stance Phase
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12
Q

What does metatarsal pads reduce?

A
  1. Reduces plantar pressure especially for pt’s who suffers from insensitivities such as cases like diabetic neuropathy.
  2. Reduces tension on MT heads.
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13
Q

What are the main disadvantage of internal modifications?

A

Tt reduces shoe volume. Shoes can be tight especially if the insert is thick.

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14
Q

What is one advantage of internal modifications?

A

It does not affect the aesthetic appearance of the shoes, unlike external modifications.

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15
Q

Like the full-length insert, it is intended to prevent depression of the subtalar joint and flattening of the arch. Helpful for patients with Pes Planus.

A

Longitudinal Arch Supports

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16
Q

What is the difference of Longitudinal arch supports and full length supports?

A

Longitudinal arch does not cover the entire foot. It is only intended to assist the longitudinal arch if there is a flattened portion.

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17
Q

It is the primary keystone for the medial longitudinal arch.

A

Scaphoid

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18
Q

Presentation of the scaphoid when a pt has pes planus.

A

Depressed.

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19
Q

Modification given specifically if there is a depressed scaphoid bone. To correct a flat medial longitudinal arch.

A

Scaphoid Pad

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20
Q

Recommended support when pt does not only suffer from a depressed scaphoid, but also weakness of the plantar muscles and other structures of the MLA.

A

Longitudinal Arch Support

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21
Q

Much rigid type of an internal modification to address midfoot issue or a posterior tibial malfunction

A

UCBL Insert

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22
Q

Landmarks of the UCBL Insert

A

Heel cups extend to the inframalleolar area and distal to metatarsal heads

23
Q

What could happen if there are deviations on the landmarks of the UCBL?

A

It can create deviations on the ambulation and cause pain or aggravate the present deformity.

24
Q

What are the main uses of the UCBL insert?

A
  1. Used to realign a flexible flat foot
  2. Immobilize midfoot fracture
  3. Correct posterior tibial malfunction.
25
Q

This wedge alters the alignment of the rearfoot.

A

A heel wedge

26
Q

These wedge & heel are intended for flexible pes valgus in which the foot moves laterally in relation to a severely pronated positioning.

A

Medial heel wedge and Thomas Heel

27
Q

The modification is attached to the medial part of the heel wherein it elevates the medial part of the foot so that the over pronation will be counteracted

A

Medial Heel Wedge

28
Q

Modification to be used in cases that there is still presence of severe pronation in which medial heel wedge won’t be enough to correct over pronation

A

Thomas Heel

29
Q

What border of the THOMAS HEEL extends forward on the medial side to augment the effect of the medial wedge in supporting the longitudinal arch

A

Anterior Border

30
Q

This wedge tends to counteract a foot that is assuming an over supination. It could also compensate for a fixed foot valgus.

A

Lateral Wedge

31
Q

T/F: Rigid foot deformities can be corrected even with the use of positional aids or modifications.

A

False. It cannot. The best way to approach this is to accommodate the foot deformities.

32
Q

Medial Heel Wedge Indications for Corrections/Lateral Heel Wedge Indications for Accommodation

A
  1. Pronation
  2. Eversion
  3. Pes Valgus
  4. Pes Planus
33
Q

Medial Heel Wedge Indications for Accommodations/Lateral Heel Wedge Indications for Corrections

A
  1. Supination
  2. Inversion
  3. Pes Varus
  4. Pes Cavus
34
Q

Made of resilient material to absorb shock at heel contact. It is indicated when the patient wears an orthosis with a rigid ankle.

A

Cushion heel

35
Q

In what gait phase does the cushion heel protect the heel?

A

Heel Strike - Shock absorption during heel contact

36
Q

Alters the entire sole of the shoe to counteract/compensate for a shortened limb. Balances the GRF on both feet during ambulation.

A

Shoe Lift

37
Q

Where is shoe lifts commonly used?

A

Used for leg length discrepancies

38
Q

T/F: The goal of the shoe lift is to reduce stress or distribute pressure

A

False. It is to raise one foot in order to shift balance.

39
Q

A flat strip of firm material placed posterior to the metatarsal heads; recommended for pts with metatarsal pain.

A

Metatarsal Bar

40
Q

Since placed posteriorly, the metatarsal bar will tend to _____ the stress on the metatarsal heads and _____ the WB pressure on the shaft.

A
  1. Reduce
  2. Transfer
41
Q

Where does the metatarsal bar transfer the stress from the metatarsophalangeal joints?

A

Metatarsal Shafts

42
Q

A convex transverse band affixed to the sole proximal to the metatarsal heads. Tends to create a smoother transition from heel strike to foot flat.

A

Rocker Bar

43
Q

The Rocker Bar is prescribed to which patients?

A

Pts who have difficulty in transitioning from heel strike to initial contact all the way to foot flat.

44
Q

Type of Rocker Bar that inhibits demand for motion in the ankle joint; for pts with weak proprioception

A

Ankle Joint Rocker

45
Q

Type of Rocker bar that reduces ground-reactive force to ball/head and improve total efficiency of initial stance all the way to the late stance.

A

Met-head Rocker

46
Q

How is the metatarsal bar different from the met-head rocker?

A

MTTB merely removes the pressure on the MTT heads and shifts it to the MTT shaft.

47
Q

Type of rocker bar that reduces ground-reactive force to the heel

A

Heel Rocker

48
Q

To whom is the Heel Rocker indicated?

A

Pts who suffer from heel pain and has issues in transitioning from initial to late stance.

49
Q

Type of Rocker Bar that reduces propulsive forces to midfoot.

A

Lisfranc Rocker

50
Q

To whom is the Lisfranc Rocker indicated?

A

Pt who suffer from midfoot fracture, pesplanus/cavus, difficulty in transitioning from initial to late stance.

51
Q

Type of Rocker bar that inhibits demand for dorsiflexion of toes especially during late stance.

A

MJP Rocker

52
Q

To whom is the MJP Rocker indicated?

A

If pt has pain on the MTP joint and needs to improve from transitioning to initial to late stance.

53
Q

Type of Rocker Bar that holds foot dorsiflexed especially during initial stance as well as during off-loading of forefoot. Indicated for pt’s with jack foot deformity

A

Healing Rocker