Trail Running
Built for unpaved gradients. A polypropylene frame gives rigid control and protection on uneven, variable terrain, while a Myolite arch filler and 3mm EVA top cover work in sync for cushioning and arch reinforcement.
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Built for uneven, variable terrain.
The Trail Running device is designed for the recreational to professional off-road runner. It provides support and control on uneven and variable terrain, helping prevent ankle and foot fatigue.
Balance and shock absorption are the mechanism: a rigid polypropylene frame controls the foot on off-camber ground, and a Myolite arch filler with a 3mm EVA top cover absorb what the trail sends back. Built congruent to the runner's own foot model, not an average.
Rigid control on off-camber ground
A pressed polypropylene frame gives rigid control and protection where the surface never repeats itself.
Improved balance, less fatigue
Holding the foot in position on variable terrain reduces the ankle and foot fatigue that accumulates over long unpaved miles.
Cushioning and arch reinforcement
A Myolite arch filler and a 3mm EVA top cover work in sync, so shock absorption does not cost arch support.
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 sport 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 Trail Running device 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 Trail Running 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.
- Trail Running frame fabricated - the polypropylene shell is pressed over the positive model with a 12mm heel cup and an intrinsic rearfoot post. A 15 Shore A Myolite arch filler, a 3mm EVA top cover, and a 0.6mm suede bottom cover are applied, forefoot balanced to rearfoot. No extension.
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 Trail Running device is set to the individual patient. Frame rigidity, heel cup depth, arch filler, and covers are chosen for that runner's anatomy, weight, and weekly trail mileage. Forefoot is balanced to rearfoot and the device is custom congruent to the foot model.
A pressed polypropylene frame, custom congruent to the foot model, for rigid control and protection off road.
An intrinsic rearfoot post stabilizes the rearfoot congruent to the foot model without adding bulk in a trail shoe.
Pressed from the patient's calcaneus, the 12mm heel cup controls inversion and eversion on off-camber ground.
A Myolite arch filler under the frame reinforces the arch and absorbs shock over long unpaved miles.
The arch contour is taken from the patient's own foot model, improving balance on terrain that never repeats.
A 3mm EVA top cover works in sync with the arch filler to cushion the foot without softening control.
Suede bottom cover protects the polypropylene shell and seats cleanly on the shoe's footbed.
The full picture.
Everything you need to prescribe the Trail Running device.
- Symptomatic feet while running
- Biomechanical pathology
Recommended for
- Recreational trail runners
- Ultramarathoners
- Runners with moderate to advanced pathology
The Trail Running device is designed for the recreational to professional off-road runner. Designed to provide support and control on uneven and variable terrain, this device helps to prevent ankle and foot fatigue by improving balance and providing shock absorption.
The device is pressed with a polypropylene frame for rigid control and protection; a Myolite arch filler and 3mm EVA top cover work in sync to provide cushioning and arch reinforcement.
Constructed 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
Designed for control on ground that never repeats.
The Trail Running device pairs a pressed polypropylene shell with an intrinsic rearfoot post and a 12mm heel cup, giving rigid control and protection as the foot lands on rock, root, and camber. Holding the foot in position is what keeps ankle and foot fatigue down over long descents.
A 15 Shore A Myolite arch filler and a 3mm EVA top cover work in sync, reinforcing the arch while absorbing the shock of unpaved gradients.
The right frame
for the trail.
The Trail Running device sits on the Performance frame profile, a low-volume fit
that drops into trail running shoes in place of the sock liner.
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