Dynamic Arch Support
Arch-rebound performance — a flexible polypropylene frame that rebounds after midstance and captures the patient's highest arch profile, built congruent for a natural, efficient stride.
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Built for gait training and a natural, efficient stride.
The Dynamic Arch Support (DAS) captures the patient's highest possible arch profile through a foam-casting technique, then calibrates a more flexible frame by weight — allowing a more comfortable, natural stride than traditional rigid orthotics while training the body for efficient biomechanics.
Rebound, not rigidity. Developed on modern mass-theory principles, a flexible polypropylene frame rebounds after the midstance phase of gait — built congruent to the patient's own foot model, not an average.
Athletic shoes with removable insoles
Sits in athletic footwear with a removable sock liner, finished wider than standard orthotics to support the entire plantar surface.
Gait training & foot alignment
For patients fit and conscious of gait training — the rebounding frame encourages a natural stride and efficient biomechanics.
Active lifestyle patients
A flexible, weight-calibrated frame suits active patients who want support without the feel of a rigid device.
Functional correction, congruent to the foot.
Built from a positive model of the patient's foot and modifiable at the clinician's discretion — scanned and ordered through FootID Pro.
Shape is everything.
What separates Root from generic insoles is the precise morphological shape captured from the patient's foot — held in the exact clinical position the clinician chose. No averaging. No guesswork.
The Dynamic Arch Support is built from a positive model of the patient's foot and can be modified at the practitioner's discretion. This means every device fits the patient it was made for — not an approximation.
Modern Root
Width adjusted considering both borders. Default for all Root models.
Traditional Root
Justified to the lateral border. Used for specific clinical indications at practitioner discretion.
Modern Root shape process
- Forefoot balanced to rearfoot — forefoot-to-rearfoot relationship is optimised as the first step in shape modification.
- Fat pad expanded ~3mm — ensures the device fills the calcaneal contour precisely for the patient's heel.
- Arch lowered ~3mm — creates optimal heel-to-arch-to-met-head geometry. Not applied to foam impressions.
- Width tuned to both borders — medial and lateral widths considered together, giving a foundation that matches the patient's actual foot width.
*Subtalar joint neutral is found by palpating the talus head against the navicular. The neutral position can present many joint-on-joint and bone-on-bone relationships and varies from person to person. An everted or inverted calcaneus may be a neutral position for an individual person. Biomechanical evaluation required.
How you hold the foot is what we build.
Root is not just the orthotic — it's the clinician's positioning, captured and preserved in the device. After scanning, FootID Pro asks the questions no other lab asks.
After every scan, we need to know:
- Was the subtalar joint held in neutral?
- Was the midtarsal joint maximally pronated — loading the 5th metatarsal head?
- Was the midtarsal joint maximally supinated — loading the 1st metatarsal head?
- Was the forefoot brought perpendicular to the rearfoot?
- Was a forefoot-to-rearfoot balance bisection achieved at 90° relative to the calcaneal bisection?
The positioning of those 19 joints in the foot is what gives us the shape.
CAD/CAM fabrication
- Scan or cast captured — clinician captures foot morphology via FootID Pro, holding the subtalar joint in the chosen clinical position.
- Shape modification applied — forefoot balanced to rearfoot, fat pad expanded, arch adjusted using Root's design process.
- Technical staff review — every device reviewed against Traditional Root, Modern Root, Blake Inverted, or Accommodative principles.
- Fabricated to the shape — the polypropylene frame and EVA post are fabricated to match the submitted shape precisely.
See how the scan becomes an order.
Watch Kevin capture a foot, confirm the clinical position, and send a Root order — start to finish.
Variation converted to anatomy-match accuracy by impression & fabrication method
How closely each method preserves the patient’s intended foot shape. Scale: 0–100%, where 100% = optimal congruence.
Plaster bandage is wrapped around the foot in the clinician’s prescribed corrected position, setting into a precise negative of the foot’s contour.
The foot is pressed into a crushable foam box, leaving a negative impression of the plantar surface.
An existing positive model from the patient’s previous orthotics is reused — KevinRoot accepts models from any lab, with frame-contour variance as low as 1%.
A digital scanner such as FootID Pro captures the foot surface as a 3D model.
A fiberglass casting sock is applied over the foot and cures to capture its contour.
Pedobarography captures the patient’s plantar pressure distribution (static or dynamic) at 1:1 scale — used with arch height and shoe size to select a redimold positive model, not to capture true 3D contour.
A direct-molding system using prefabricated, size- and arch-based positive models (33 in total) rather than an individual foot impression.
Heated material is vacuum-pressed over a plaster positive model, drawing it intimately into every contour.
The frame is 3D printed by selective laser sintering (SLS) directly from the CAD-designed digital frame.
A positive model is CNC-milled (CAD/CAM) from an STS, 3D scan, plaster, or foam impression, then the frame is vacuum formed over it.
A CNC machine subtractively mills the frame from a block of polypropylene or EVA per the digital design.
*Redimold has no physical or digital foot impression — patient-foot-to-cast congruent accuracy is unavailable. Variation from positive model to frame is low.
How your patient's foot shape becomes a precision frame.
The journey from clinical capture to finished Dynamic Arch Support frame is where Root's expertise lives. Every step preserves the shape and position the clinician chose for that patient.
- Foot impression captured — the clinician captures the foot using their preferred method. How the foot is held directly determines the congruency of the finished device.
- Positive model created — the impression becomes a physical plaster model or a digital CAD/CAM model. Digital models are stored indefinitely for future pairs.
- Root technicians modify the shape — every modification reviewed against the prescription. Rearfoot post, heel cup depth, and cover selection confirmed per patient.
- Dynamic Arch Support frame fabricated — a flexible polypropylene frame is vacuum formed over the foam-cast positive model and calibrated by weight to rebound after midstance. A Prolite top cover, Myolite extension, and suede bottom cover are applied with an intrinsic rearfoot post, forefoot balanced to rearfoot.
FitFoot360 Foot Model
- Root digital model stored indefinitely → recalled for future pairs
- Root technicians modify the digital shape in real-time: arch, heel, width, postings
- Vacuum formed over CAD/CAM positive model, direct milled or 3D printed Root Frame — replicable, consistent, precise
Real-time control over shape, function, and fit.
FitFoot360 gives Root's technicians complete digital control over every dimension of the orthotic frame — in real time. What once required physical carving and guesswork is now precise, repeatable, and stored permanently for every patient.
Digital positive model
Stored indefinitely. Future pairs, replacements, or modifications can be fabricated from the exact same shape without a new impression.
Real-time shape modification
Root technicians control arch, heel, width, and postings directly in the software.
Every parameter visible
Heel cup depth, frame reinforcement, ray cut-outs, flanges, and more are set per patient, not per template.
Plaster and foam digitisation
Physical models can be digitised for permanent storage. Note: digitising may not perfectly replicate the intimate contours achieved when vacuum forming directly over plaster.
Built to their spec. Built for their foot.
Every parameter of the Dynamic Arch Support is set to the individual patient — frame rigidity, rearfoot posting, heel cup depth, and covers are all chosen for that patient's anatomy, weight, and activity demands. Forefoot is balanced to rearfoot and the device is custom congruent to the foot model.
A flexible polypropylene frame calibrated to patient weight — developed on modern mass-theory to rebound after the midstance phase of gait for a natural stride.
No frame filler — a clean, flexible shell finished wider than standard orthotics to support the entire plantar surface of the foot.
An intrinsic rearfoot post is built into the frame itself — low-profile stability without adding bulk beneath the heel.
Pressed directly from the patient's calcaneus, the heel cup fits their heel precisely — controlling their specific degree of inversion and eversion.
Proprietary Prolite padded top cover — moisture control, shock absorption, and cushioning underfoot for active wear.
Full-length Myolite extension carries a smooth, cushioned surface from heel to toe for a consistent underfoot feel.
Suede bottom cover protects the polypropylene frame and seats cleanly on the shoe's footbed across shoe environments.
The full picture.
Everything you need to prescribe the Dynamic Arch Support.
- Bone deformity
- Foot deformity
- Arthritis
- Musculoskeletal pathology
- Lower extremity pathology
- Poor posture
Recommended for
- Gait training and foot alignment
- Athletic shoes with removable insoles
- Active lifestyle patients
The Dynamic Arch Support (DAS) is optimized with a foam-casting technique that captures the patient's highest possible arch profile — casting the foot in its most supinated position for the most intimate arch control.
The frame is then calibrated more flexible by patient weight for a comfortable, natural stride. Developed on modern mass-theory principles, the polypropylene frame rebounds after midstance and is finished wider than standard orthotics to support the entire plantar surface. Built from a positive model of the patient's foot and modifiable at the practitioner's discretion.
- L3000 (UCB)
- L3010 (longitudinal/metatarsal support)
- L3020 (arch support)
- L5000 (filler)
Based on configuration. For reference only. Final coding and billing are the provider's responsibility.
Delivery Time
- Standard: 2 weeks
- Expedited: Available on request
A rebounding frame for a natural stride.
The Dynamic Arch Support pairs a flexible, weight-calibrated polypropylene frame with an intrinsic rearfoot post — developed on modern mass-theory to rebound after the midstance phase of gait for a more natural stride than a rigid device. The 12mm heel cup controls inversion and eversion of the calcaneus, stabilizing the foot at the subtalar joint through the gait cycle.
A foam-cast, most-supinated impression yields the most intimate arch control, and the frame is finished wider than standard orthotics — supporting the entire plantar surface while a Prolite top cover and Myolite extension keep it comfortable underfoot.
The right frame
for arch rebound.
Dynamic Arch Support sits on the Performance frame profile — a flexible, rebounding platform built
for gait training and a natural stride in athletic footwear.
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