Dorsiflexion Assist AFO with Oklahoma Joints - HubSpot

Dorsiflexion Assist AFO
with Oklahoma Ankle Joints

Nick, Kacie, Vanessa, and Johanna

Names of Components

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

Manufactures

• Becker Orthopedic

– 635 Executive Dr.
Troy, Michigan 48083

• Precision O&P Components, Inc.

– P.O. Box 24556
Tempe, Arizona 85285

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

Sizes and Materials Available

• Oklahoma Ankle Joint

– Sizes –Materials

• Pediatric • Injection molded polypropylene
• Small • 2 joints
• Medium • Attachment screws
• Large • 4 brass inserts
• Extra Large • 2 pivot bushings and screws

Sizes and Materials

Photos courtesy
of Becker
Orthopedic

Sizes and Materials Available

• Posterior Spring Assist & Adjustable Stop

– Sizes –Materials

• Pediatric (15º ROM) • Duralyn
• Posterior component
• Adult (15 º ROM) • Nail angled stopping block
• Adult Extra Large
(with tab)
(25 º ROM) • 2 springs (firm and soft)

Accessories & Special Tools

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

Fabrication Process

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

Aligning Joints

Joint Build-ups

Aligning PSA

Preparing to Thermoform

Thermoforming

Removing AFO from Cast

Grinding

Finishing

Assembly

Finished Product

Difficulties in Fabrication

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

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

Thanks for Listening!