• Biofoam (crush box)

• Suspension cast (plaster)

• Palpate the talonavicular joint in a neutral position

• A fxn'l foot orthotic that is made from a rigid plastic or equal material
• Designed based on body weight and activity level of the patient
• Fits inside a shoe
• Often designed to allow pronation control by wedging the hind foot

• Has more flexibility than rigid plastic
• Thichness is based on body wieight and activity

• Made from very soft and forgiving material
• When pressure is exerted on it, it will thin out and depress, crating more surface area to vary the pressure distribution
• Great for diabetics that have no sensation in the foot

• A flexible deformity is:

• A rigid (fixed) deformity is:

• Flexible: there is movement within the joint, you can apply a wedge to help correct the deformity, to get teh joint back to neutral

• Fixed: there is no movement allowed within the join, un-even WB
  • to help correct a deformity you could use a wedge to accommodate the deformity, bring the ground up to it and help to relieve thre pressures

When there is over 1/4 inch of a LLD

** if the discrepency is up to 3/8ths an inch it can be corrected inside the shoe

• An accommodating rigid Medially placed wedge is used to accommidate a:

• An accommodating rigid Laterally placed wedge is used to accommidate a:

• Accommodating rigid: Medial
  • for a flexible valgus, or fixed varus deformity

•  Accommodating rigid: Lateral
  • for a flexible varus or fixed valgus deformity

• Claw toes
• Hammer toes
• Diabetic foot
• Partial foot
• Heel ulcers

• Compresses the heel at heel strike to allow for tibial translaion making PF possible
• Useful for:
  • arthritis
  • ankle fusion
  • pain

A metatarsal rocker on a shoe is useful for

assisting with what motion, by performing what type of mechanics at tibia and ankle?

Why might this design be useful?

• A Metatarsal rocker creates a slope along the anterior portion of the shoe to help assist with DF
• The rocker action allows anterior translation of the tibia to simulate DF while the ankle remains at 90 degrees
• Can be useful for fractured MT heads and forefoot disorders

What are the characteristics of a diabetic shoe?

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• Deep toe box
• proper last shape
• padded collar and tongue
• rocker

A Rigid plastic device (in order for it to provide motion control it must be stiff (rigid) and supportive.

navicular & talus

What is the purpose of an

outflare heel wedge (extra wide heel)?

• Control pronation
• Control supination
• Control medial and lateral stability of the hindfoot

Assists with medial and lateral stability during stance phases

A flexible foot with high steppage gait

What musclces are attached to the talus?