Movement
Every degree matters.
The last degrees of knee flexion decide how a day feels. They are also the degrees most often lost to material that is thicker, stiffer or longer than it needs to be.
- Challenge
- The last degrees of knee flexion are where users report effort: sitting down, standing up, stairs, inclines, cycling, driving.
- Why it matters
- Restriction at end range does not show up as a broken component. It shows up as a day that takes more energy than it needed to.
- Our approach
- We design thickness, conicity and textile behaviour around the movements people actually repeat, and we change one variable at a time when we test.
- Evidence
- Gait cases, mechanical tests and sizing protocols.
Where degrees are lost
Four places to look before changing the product.
- Popliteal bunching: material gathering behind the knee at end-range flexion.
- Wall thickness through the flexion zone, not just at the distal end.
- Conicity mismatch: a liner shape that fights the limb shape under load.
- Textile stiffness in the direction of the movement, especially after wear.
Everyday movements we design around
Not activity levels. Actual repetitions.
- Standing up from a low seat, dozens of times a day.
- Stairs and inclines, where end-range flexion is unavoidable.
- Cycling and driving, where the knee stays flexed under load.
- Kneeling and floor work, where distal protection competes with mobility.
A comfort improvement that cannot be traced to a single changed variable is a story, not a result. We change one thing, then look.
Evidence
Movement cases.
Clinical caseMovement
Downsizing and end-range flexion: one variable at a time
A single-user clinical case where sleeve size was the only variable changed, to separate habit from restriction.
2026-06-11
User caseMovement
Sit to stand: where the effort actually starts
A user case following the sequence before standing up, not the standing itself.
2026-05-02