Afo - Overview
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Overview
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Ankle Foot Orthosis Samedy Srors CPO, P/O Lecturer September 2009
Ankle 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 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 AFO ➡
Paralysis Muscle weakness Muscle imbalance Burn Contracture Spasticity Long term unequal length or fracture
Goals 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 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
Categories
•
Conventional AFO vs. Contemporary AFO Dynamic AFO vs. Static AFO
•
Prophylactic AFO (Preventive AFO)
Conventional AFO
Conventional AFO with double Klenzak Joint
Contemporary AFO
PTB AFO Jointed AFO Rigid AFO
PTB AFO Rigid AFO
Static AFO
Jointed AFO
Conventional jointed AFO with double Klenzak joint
Dynamic AFO
Summary •
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&A
Study 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?
Ankle 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 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 AFO ➡
Paralysis Muscle weakness Muscle imbalance Burn Contracture Spasticity Long term unequal length or fracture
Goals 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 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
Categories
•
Conventional AFO vs. Contemporary AFO Dynamic AFO vs. Static AFO
•
Prophylactic AFO (Preventive AFO)
Conventional AFO
Conventional AFO with double Klenzak Joint
Contemporary AFO
PTB AFO Jointed AFO Rigid AFO
PTB AFO Rigid AFO
Static AFO
Jointed AFO
Conventional jointed AFO with double Klenzak joint
Dynamic AFO
Summary •
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&A
Study 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?
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