Track & Field
An ultra-lightweight device giving dynamic arch support without adding weight. A thin polypropylene frame under a Prolite layer, finished sulcus length and narrow so it fits inside low-volume track spikes.
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Built for sprinting and jumping: support with no added weight.
The Track & Field device gives high school to professional athletes dynamic arch support without adding unnecessary weight. Its narrow finish lets it fit inside low-volume track spikes.
A thin polypropylene frame covered with a layer of Prolite for cushioning and shock absorption. As a sulcus-length device, cushioning continues under the metatarsal heads where sprinters and jumpers load. Built congruent to the athlete's own foot model, not an average.
Low-volume track spikes
The narrow finish and 6mm heel cup keep the device thin enough to sit inside a spike without crowding the upper.
Sulcus length by design
The device runs to the sulcus, keeping cushioning under the metatarsal heads while leaving the toes free to work.
Modifiable for the event
A forefoot wedge post or medial flap may be recommended for some athletes at the practitioner's discretion.
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 Track & Field 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 Track & Field 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.
- Track & Field frame fabricated - the thin polypropylene shell is pressed over the positive model with a 6mm heel cup and an intrinsic rearfoot post, then finished narrow and to sulcus length. A 2mm Prolite top cover is applied, forefoot balanced to rearfoot. No filler, bottom cover, or 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 Track & Field device is set to the individual patient. Frame thickness, heel cup depth, finish width, and optional forefoot posting are chosen for that athlete's anatomy, weight, and event. Forefoot is balanced to rearfoot and the device is custom congruent to the foot model.
A thin polypropylene frame, custom congruent to the foot model, gives dynamic arch support with almost no weight penalty.
An intrinsic rearfoot post stabilizes the rearfoot congruent to the foot model, adding nothing to the profile of the device.
A shallow 6mm heel cup holds the calcaneus while keeping the foot low inside a track spike.
The device terminates at the sulcus, so cushioning continues under the metatarsal heads while the toes stay free.
A narrow finish allows the device to fit inside low-volume track spikes.
A Prolite layer over the frame provides cushioning and shock absorption for sprinting and jumping.
A forefoot wedge post or medial flap may be recommended for some athletes, at the practitioner's discretion.
No frame filler, bottom cover, or extension, keeping the finished device as light as possible.
The full picture.
Everything you need to prescribe the Track & Field device.
- Recovering from injury
- Symptomatic feet while sprinting, running and jumping
- Biomechanical pathology
Recommended for
- High school to professional track and field athletes
- Track and field athletes with moderate to advanced pathology
- Performance enhancement
The Track & Field device is an ultra-lightweight orthotic designed to provide dynamic arch support for high school to professional track and field athletes without adding unnecessary weight. A thin polypropylene frame is covered with a layer of Prolite for cushioning and shock absorption.
As a sulcus-length device it provides cushioning under the metatarsal heads, and its narrow finish allows it to fit in low-volume track spikes. A forefoot wedge post or medial flap may be recommended for some athletes.
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 dynamic arch support at speed.
The Track & Field device pairs a thin polypropylene shell with an intrinsic rearfoot post and a shallow 6mm heel cup, delivering functional support with the lowest possible profile and weight inside a track spike.
A 2mm Prolite top cover carries cushioning and shock absorption through to the metatarsal heads at sulcus length, and a forefoot wedge post or medial flap can be added where the athlete's mechanics call for it.
The right frame
for the track.
The Track & Field device sits on the Performance frame profile, finished narrow
and to sulcus length so it fits inside low-volume track spikes.
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