Ankle Foot Orthosis

Ankle Foot Orthosis

Samedy SrorsCPO, P/O Lecturer

September 2009

Samedy SrorsCPO, P/O Lecturer

September 2009

Ankle Foot OrthosisAnkle Foot Orthosis

A mechanical device that supports the foot and ankle and extends above the malleoli of the ankle.

Although it mainly effect the ankle, it also has an effect on knee joint.

The orthotist should not overlook this feature and jump straight into prescribing a KAFO instead of an AFO.

Aim of the orthotistAim of the orthotist

To maximize the patient’s quality of life by providing appropriate orthotic management that does not over brace in a biomechanically functional position.

Prescription of AFOPrescription of AFO➡ Paralysis

➡ Muscle weakness

➡ Muscle imbalance

➡ Burn

➡ Contracture

➡ Spasticity

➡ Long term unequal length or fracture

Goals of AFOGoals of AFO➡ to support the foot and ankle.

➡ to maintain optimal functional alignment during activities.

➡ to limit motion to promote healing of structures.

➡ to substitute for inadequate muscle function during key points of gait cycle.

➡ to optimize alignment and help to mage abnormal muscle tone.

➡ to minimize the risk for deformities.

Prescription criteriaPrescription criteria

➡ Thorough Assessment

✓ Subjective and objective assessment

➡ Functional Requirements

✓ Correct (hold, assist, resist)

✓ Accommodate✓ Relieve✓ Compensate

➡ Desire

✓ Types of AFO

✓ Fabrication Process✓ Trim lines✓ Footwear

CategoriesCategories

Conventional AFO vs. Contemporary AFO

Dynamic AFO vs. Static AFO

Prophylactic AFO (Preventive AFO)

Conventional AFOConventional AFO

Conventional AFO with double Klenzak Joint

Contemporary AFOContemporary AFO

Jointed AFORigid AFO PTB AFO

Static AFOStatic AFO

Rigid AFO PTB AFO

Dynamic AFODynamic AFO

Jointed AFO

Conventional jointed AFO with double

Klenzak joint

SummarySummary

An AFO cover and extend above ankle thus mainly supporting the ankle and foot. However, it can also effect the knee.

AFO can be prescribed for several conditions in an attempt to improve the quality of life without over bracing.

AFO’s are categorized based on material selection, structures, fabrication methods.

Q&AQ&A

Study QuestionsStudy Questions

What is the aim of the orthotist?

What are the criteria that prescription of an AFO depends on?

What types of problems that you can prescribe an AFO for?

What are the goals of prescribing an AFO?

What are the functions of AFO?

How are AFO’s classified?