Dorsiflexion Assist AFO with Oklahoma Ankle Joints

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Dorsiflexion Assist AFO with Oklahoma Ankle Joints

• Nick, Kacie, Vanessa, and Johanna

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Names of Components

• Oklahoma Ankle Joints
• Posterior Spring Assist Kit (Elite Line)

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Manufactures

• Becker Orthopedic
• 635 Executive Dr.
• Troy, Michigan 48083
• Precision OP Components, Inc.
• P.O. Box 24556
• Tempe, Arizona 85285

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Uses of Product

• Provides articulation at the ankle and free
  motion in the sagittal plane
• Assisting dorsiflexors
• Patients with drop foot
• Ex stroke patients, neurologically impaired
  patients

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Sizes and Materials Available

• Oklahoma Ankle Joint
• Sizes
• Pediatric
• Small
• Medium
• Large
• Extra Large

• Materials
• Injection molded polypropylene
• 2 joints
• Attachment screws
• 4 brass inserts
• 2 pivot bushings and screws

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Sizes and Materials
Photos courtesy of Becker Orthopedic
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Sizes and Materials Available

• Posterior Spring Assist Adjustable Stop
• Sizes
• Pediatric (15º ROM)
• Adult (15 º ROM)
• Adult Extra Large
• (25 º ROM)

• Materials
• Duralyn
• Posterior component
• Nail angled stopping block
• (with tab)
• 2 springs (firm and soft)

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Accessories Special Tools

• Nylon bushing covers
• 21 and ¼ drill bits
• Coping saw
• Pencil grinder

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Fabrication Process

• Aligning joints
• Joint build-ups
• Aligning PSA
• Thermoforming AFO
• Grinding
• Finishing
• Assembly

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Aligning Joints
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Joint Build-ups
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Aligning PSA
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Preparing to Thermoform
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Thermoforming
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Removing AFO from Cast
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Grinding
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Finishing
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Assembly
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Finished Product
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Difficulties in Fabrication

• Aligning the ankle joints and buildups
• Application of transfer paper
• Build-ups for full ROM not sufficient

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Things We Would Do Differently

• Make sure the plastic is hot enough before
  applying transfer paper
• Get second opinion on alignment
• Build up more for ROM of joints

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Thanks for Listening!