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Evidence-based Software
For Prosthetic &
Orthotic Design

Simplified imagery of riiForm software, including sliders, data and below knee residual limb

Data-driven outcomes, backed by clinical study

riiForm is a web-based platform that supports clinicians at every stage of the prosthetic and orthotic fitting process. Upload a patient scan and receive instant, evidence-based design and fit recommendations drawn from historical outcomes.

With intuitive digital tools, you can refine each device to achieve the optimal fit while reducing guesswork and saving time. By combining data-driven guidance with your clinical expertise, riiForm helps clinics accelerate the delivery of comfortable, definitive prosthetic and orthotic solutions - streamlining workflows without compromising care.

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Tailored Solutions, Smarter Care

Imagine a world where every prosthetic socket starts with a tailored, evidence-based design - one that reduces guesswork and saves clinicians' valuable time. That's exactly what riiForm's workflow delivers.

By providing a simple model to customise each socket fit digitally, we support clinicians to find the optimal socket fit for each patient, reduce the need for multiple check sockets and speed up the delivery of comfortable definitive devices.

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Multiple Workflows, One Platform

Below Knee

Below Knee

Above Knee

Above Knee

Coming Soon!

Ankle-Foot Orthosis

Ankle-Foot Orthosis

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Features

Easily upload a scan and set anatomical landmarks

Quickly receive optimal fitting suggestions drawn from extensive historical data

Precise and intuitive modifying tools designed to harness clinical expertise

Accurately compare patient scans over time

Compatible with carving and 3D printing

Fit

Inform

Refine

riiForm

fit img REPLACE

Receive optimized Fit suggestions

Radii's mission has always been to empower clinicians to spend less time on repetitive tasks, and more time focused on patient care.

Our Fit workflow uses an extensive database of historical socket designs and patient outcomes to generate an initial tailored socket fit.

By analyzing similar scans and applying insights from past episode's of care, it suggests a design that aligns with each patient's unique anatomy. This isn't just automation: its precision, driven by evidence, to support clinical expertise.

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Supporting every stage of the episode of care

With riiForm, you're not tied down by a 'pay-per-export' model. Instead, we cover the entire episode of care: from the first scan, through every adjustment, to the final, definitive fit. No matter how many check sockets are needed.

The result? Prosthetic care that's precise, intuitive, and focused on achieving the best outcomes for patients, without the hidden costs for complex cases.

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Analyze scans and forecast limb evolution with Compare

Visualize subtle, yet significant, changes in limb shape between scans with riiForm's Compare tool.

Advanced features like Auto-Align allow clinicians to effortlessly overlay and analyze scans to track progress with incredible accuracy.

Compare provides data-driven insights to predict future changes, helping you deliver proactive, personalized care to your patients.

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Physiotherapist and her patient with a lower limb amputation

Committed to Regulatory Excellence

Radii Devices’ Quality Management System is ISO-13485:2016 certified for the design, production, and provision of riiForm’s Fit workflow as software to enhance prosthetic and orthotic practice.

We are registered with the FDA as a Medical Device Establishment, and Fit conforms to the UK Medical Device Regulations (MDR) 2002 and the EU MDR (2017/745) as a Class I medical device (UKCA and CE marked).

Clinical Study: Feasibility

Our technology has undergone rigorous testing, including a feasibility study evaluating the use of smart templates that link rectification approaches to specific patient characteristics in prosthetic socket fitting.

(IRAS ID: 313408, EGRO NO: 76033, REC REF: 22/YH/0215)

Clinical Study: Safety

Read the results of our safety evaluation: An evaluation of clinical usability-related safety of an Adaptive Templates Fitting System (ATFS) to support prosthetic socket design.

(IRAS ID: 317901, ERGO NO: 81419, HRA REC REF: 24/LO/0126, NIHR Study ID: MUSC 57956)

News

Our mission is to democratize access to the best possible care, using research and clinical insight to remain at the forefront of technological advances.

Our mission is to democratize access to the best possible care, using research and clinical insight to remain at the forefront of technological advances.

We were founded in 2020 by Joshua Steer, whilst studying at the University of Southampton. Inspired by his PhD research investigating how to improve the fit and comfort of prosthetic limbs, Joshua's mission is to define, develop, and deliver the best possible fitting experience possible for all prosthetic and orthotic wearers.

Based in Bristol, the growing Radii team are now supporting clinicians across the world to adopt riiForm into their practice.

Our core team have been working within and alongside clinical settings for over ten years. We're award-winning researchers, experts in mechanical engineering and software development, and specialists in human-centered design.

Photo of Joshua Steer

Joshua Steer

Founder and CEO

Photo of Jenny Bramley

Jenny Bramley

Clinical Lead and CSO

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Rosalynne Watt

COO

Photo of Harry Rossides

Harry Rossides

Technical Lead