Knees are judged in a ten-minute visit. They fail at home.

Concept v0.3 · November 2026 · funding applied for

Surgery or rehab, back to sport or not, revise the implant or wait: the big knee decisions rest on a hand test in the consulting room and the patient's memory. What the knee does at home — on the stairs, on a site, on the pitch — nobody sees.

Liminex Knee
The concept

Liminex Knee is a patch on the thigh and one on the shin, each with a motion sensor that clicks out for reuse, with an app and an AI behind them. Together they record how the knee moves through ordinary days and catch the moments it gives way. One button in the app — ‘it gave way’ — makes the patient part of the measurement.

The clinician sees no raw data but a weekly summary: how the knee was loaded, how recovery is going, and an alert only when something changes. An objective record from home, next to the ten minutes in the consulting room.

We build the housing and the clip, the app, the software that turns two sensors into one picture of the knee, the AI and the clinician view. The sensor and the medical skin adhesive are proven components we buy. The track: medical device, EU MDR Class IIa.

Why it matters
28,708
primary knee replacements in the Netherlands in 2024 (LROI)
1 in 4
revisions over 2015–2024 were for instability (LROI)
0
products that count giving-way episodes at home (our market scan, October 2026)

One glance for the clinician

An objective home record next to the hand test, with no extra clinic time.

Confidence for the patient

Recovery that becomes visible week by week — and daring to move because you can see it.

Better decisions

Instability documented before a revision is decided on.

Data that does not exist yet

The first dataset of giving-way in daily life, as an open benchmark.

Who we're looking for

This is why this page exists. If you fit one of these rows, we want to talk to you.

Who
What we ask
What you get
WhoSensor and housing suppliers
What we askA quote for 50–500 units (IMU module, housing, medical adhesive) and a supply-intent letter.
What you getFirst choice as supplier of the first series once funding closes.
WhoEngineers with MDR experience
What we askTwenty minutes of advice on the Class IIa path and ISO 13485.
What you getAn honest account of what we did with it, and first refusal on the certification work.
WhoOrthopaedic, physio and sports-medicine groups
What we askA conversation about the home-wear study: 30 patients, two one-week blocks, after knee replacement.
What you getCo-authorship, dataset access and the clinician view first.
WhoUniversities and student teams
What we askMotion-capture lab time for validation sessions; graduation projects on the knee engine.
What you getAn open benchmark and a published baseline model with your name on it.
WhoEarly-stage medtech investors
What we askAn introduction now, ahead of a 2028 seed round.
What you getThe full proposal under NDA and quarterly updates from stage 1.

How we work

01

Feasibility first

Every stage starts with whether it works and what it costs — an honest go/no-go before money goes into building.

02

Proven parts, our own core

What already exists we buy off the shelf. We only build what is not there yet: the software, the integration and the design around them.

03

Developed in the open

The status is on this page, estimates are called estimates, and partners get a quarterly update — also when things go badly.

Can you supply, pilot, advise or fund?

Send two sentences. You'll get the full proposal under NDA, and a call within a week with the engineer working on it.

Get in touch