Model A12

Extremely durable, universal orthosis. Provides uncompromising control for heavier patients.


  • Versatile Comfort
  • Universal Style
  • Unitized, Polypropylene, Rearfoot Posting
  • Custom contoured for control and support
  • Premium, Medical Grade, Polypropylene Shell


The Unit is similar to the Classic Sport in terms of versatility, but with increased support, making it a great orthosis option for patients weighing more than 250 pounds. It is well suited for patients who are active and need rearfoot control with a unitized extrinsic post.

This device’s rearfoot post is constructed from polypropylene, providing complete functional control to the rearfoot without the compression of a crepe post. As an entirely rigid shell, the Unit is akin to the once popular Rohadur material and style of orthotic.

This device has a vinyl top cover but is also available with no top cover for swimming and water-shoe applications (See S12 Water device).

The Unit is constructed with a positive model of the patient’s foot and can be modified at the practitioner’s discretion.

Tech Specs


  • 3mm Fat Pad Expansion
  • 3mm Lower Medial Arch
  • 10mm Heel Cup


  • MOD: 0 (Modify casts to Balance Forefoot perpendicular to Rearfoot)
  • RF:0 (0° Extrinsic Rearfoot Post)
  • FF1: N (Forefoot Neutral: Not Posted)
  • FF2:      (None: Splitting forefoot post partial intrinsic and partial extrinsic)
  • HL: 0mm (No Heel Lift)


  • White Polypropylene Shell Calibrated per Weight
  • White Polypropylene Rearfoot Post


  • Finish Standard


  • Black Vinyl Top Cover to Metatarsal Heads


Top Cover Options

  • Glove Leather
  • Micro Suede
  • Plastazote
  • Spenco
  • Vinyl
  • Prolite

Bottom Cover Options

  • Glove Leather
  • Micro Suede
  • Vinyl

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Recommended For

  • Shoes with removable insoles
  • Patients over 250lbs
  • Sports injury pathologies

Clinical Indications

  • Overpronation
  • Endomorph body type
  • Lower extremity pathology
  • Poor posture

Customized Devices

Full details and images from custom devices that have been built for actual patients

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