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Proteor
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Proteor · Microprocessor knees · PR-034
Proteor Quattro Microprocessor Prosthetic Knee
The Proteor Quattro is a microprocessor prosthetic knee built around a single bidirectional valve that adjusts resistance continuously. Three sensors feed the controller. It is rated IP67, runs two to three days per charge, flexes to 135 degrees and weighs 1,655 g. Users tune their gait in a mobile app. The maker's US shop shows a list price of USD 20,502 for the Quattro 2, quoted here as a guide price.
- Activity level
- K3 to K4
- Max user weight
- 300 lb (136 kg)
- Knee flexion
- 135 degrees
- Weight
- 1,655 g (3.65 lb)
Proteor Quattro key features
- One fast-acting bidirectional valve
- Three sensors feeding the controller
- IP67 water resistance
- Mobile app for the user's own gait tuning
- Remote firmware updates
- Pyramid or threaded top connector
Who the Proteor Quattro suits
For active transfemoral users at K3 and K4 up to 136 kg who want a water-resistant microprocessor knee they can fine-tune from a phone. A prosthetist fits it and makes the clinical settings.
This kind of device is prescribed and fitted by a clinician. An enquiry starts that conversation. It is not a purchase.
Figures for comparing
- Weight
- 1.7 kg (3.7 lb)
- Max user weight
- 136 kg (300 lb)
The same units on every product, converted from the specifications below. Where a source gives two limits, the lower one is shown.
Proteor Quattro specifications
| Activity level | K3 to K4 |
|---|---|
| Max user weight | 300 lb (136 kg) |
| Knee flexion | 135 degrees |
| Weight | 1,655 g (3.65 lb) |
| Build height | 216 mm (8.5 in) |
| Battery | 2 to 3 days |
| Water rating | IP67 |
| Connectors | Pyramid or threaded top |
| Maker country | France (US-built range) |
| Guide price | USD 20,502 list for Quattro 2 (component only) |
| Brand | Proteor |
| Category | Lower limb - knees, hips and leg systems, Microprocessor knees |
| Catalog ID | PR-034 |
Compared with the source page on 5 October 2026. Details can change, so we confirm them in your quote. Open the source page.
Proteor Quattro: common questions
How much does the Proteor Quattro cost?
As a guide price, the maker's US shop lists USD 20,502 for the Quattro 2, component only. Your quote confirms the current model and figure.
Is the Proteor Quattro waterproof?
It carries an IP67 rating.
How long does the Quattro battery last?
Proteor gives a battery life of two to three days.
How to get a quote for the Proteor Quattro
Add it to your enquiry list
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You receive availability, a price and delivery options by email, and decide after that.
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