Ch 6 - Prosthetic and Orthotics: LE Orthoses for Pressure Redistribution

Question 1

Where does a Patellar Tendon bearing Orthosis reduce weight bearing?

Answer 1

Mid or distal tibia, ankle, and foot

Question 2

Where does an Ischial weight-bearing Orthosis reduce weight bearing?

Answer 2

Relieve weight from the femur or knee

Question 3

Describe a Patten-bottom Orthosis.

Answer 3

Uses uprights with no ankle joint that terminate in a floor pad distal to the shoe so the foot is freely suspended in midair

Question 4

What are the rationales for Efficacy of Tone-Reducing Orthoses?

Answer 4

1. Inhibition of reflexes
2. Pressure over muscle insertions
3. Active and static prolonged stretch
4. Orthokinetics

Question 5

How can an AFO reduce tone in ankle?

Answer 5

Pressure on either side of tendo-calcaneus and insertion of gastroc-soleus muscle groups

Question 6

Describe passive field materials that produce inhibitory effect.

Answer 6

Cool, rigid, and smooth

Question 7

Describe active field materials that produce facilitatory effect.

Answer 7

Warm, expansive, and textured

Question 8

Where is the active field stimulation in AFO?

Answer 8

Over anterior tibialis to encourage dorsiflexion

Question 9

Where is the passive field inhibition in AFO?

Answer 9

Over gastrocnemius to reduce spastic plantar flexion