EVA UCBL
A UCB-style device built entirely from EVA. High, soft medial and lateral flanges give substantial stabilization with softer ground reaction forces, for active patients who need control that stays comfortable.
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Control that the patient can wear all day.
The EVA UCBL is our own take on the UCB style device, designed to provide softer ground reaction forces while still providing substantial lateral and medial stabilization.
Ideal for complicated presentations in patients who are active and require a lightweight device that is controlling but comfortable.
Strobel or board lasted shoes
Needs generous width in the midfoot so the EVA frame filler sits flat and level in the shoe.
Active patients needing therapeutic control
A lightweight, all-EVA build for patients who will not tolerate a rigid shell all day.
Arthritic and painful joints
Softer ground reaction forces suit ankle and midfoot arthritis and PTTD stages II, III, and IV.
Note: for rigid, maximum stabilization, the T4 UCBL is recommended.
Comfortable control, 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 EVA UCBL 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 EVA shell, flanges, and frame filler 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 EVA UCBL 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.
- EVA UCBL frame fabricated: a 65 Shore A EVA shell is formed over the positive model with an 18mm heel cup, medium medial and lateral flanges, an intrinsic rearfoot post, and 45 Shore A EVA frame filler, finished with a durable .75mm Protex top cover to the metatarsals, 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 EVA UCBL is set to the individual patient: EVA density, flange height, heel cup depth, and filler are all chosen for that patient's anatomy, weight, and footwear. Forefoot is balanced to rearfoot and the device is custom congruent to the foot model.
An all-EVA frame per patient weight: lightweight and forgiving, yet firm enough to stabilize the foot and ankle.
Softer EVA frame filler levels the device in the shoe and helps control movement in the foot and ankle.
An intrinsic rearfoot post keeps the build seamless and low-irritation under an arthritic foot.
A deep heel cup pressed from the patient's calcaneus, capturing the heel and controlling inversion and eversion.
A durable Protex top cover carried to the metatarsals.
Soft EVA medial and lateral flanges give substantial stabilization without a hard edge against the foot.
No forefoot extension. The device runs to the metatarsals, keeping the shell arch-length.
No bottom cover. The EVA frame and filler seat directly in the shoe.
The full picture.
Everything you need to prescribe the EVA UCBL.
- Ankle and midfoot arthritis
- Overpronation
- PTTD stages II, III, IV
Recommended for
- Comfortable control
- Active patients needing therapeutic control
- Strobel or board lasted shoes with generous midfoot width
The EVA UCBL is our own take on the UCB style device, designed to provide softer ground reaction forces while still providing substantial lateral and medial stabilization.
The EVA UCBL features an all EVA frame per weight with high, soft medial and lateral flanges and EVA frame filler to control movement in the foot and ankle. It is covered with a durable Protex top cover to the metatarsals. Built with a positive model of the patient's foot and modifiable at the clinician's discretion. For rigid maximum stabilization, see the T4 UCBL.
- 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
Stabilization without the hard landing.
An arthritic or pronating foot needs the walls of a UCBL, but a rigid shell transmits every ground reaction force straight into painful joints. The EVA UCBL keeps the geometry and changes the material: high, soft EVA flanges and an 18mm heel cup still resist eversion, abduction, and midfoot collapse, while the EVA absorbs the impact the shell would otherwise pass along.
The intrinsic rearfoot post and 45 Shore A EVA frame filler keep the device level and seated so the correction holds through the gait cycle. The result is substantial stabilization that an active patient with arthritis or PTTD can tolerate all day, congruent to their foot.
The right frame
for comfortable control.
EVA UCBL sits on the R4 UCBL frame profile: the extra-wide platform with deep heel capture,
built here entirely in EVA so the control arrives softly.
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