USD 1,035 (maker's listed price)
All-Terrain Knee
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Proteor
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Proteor · Mechanical knees · PR-023
Proteor Symphony Polycentric Prosthetic Knee
The Proteor Symphony is a mechanical prosthetic knee built on a six-bar polycentric structure with a hydraulic cylinder for swing. A mechanical sensor the maker calls p-MRS detects where the wearer is in the gait cycle and controls stability without electronics. It bends to 170 degrees, weighs 920 to 1,010 g by variant and is made of titanium and aluminium. The guide price is USD 3,753 for the component.
- Activity level
- K3
- Knee flexion
- 170 degrees
- Weight
- 920 to 1,010 g by variant
- Build height
- 191 to 197 mm (7.5 to 7.75 in)
Proteor Symphony key features
- Six-bar polycentric structure
- Hydraulic cylinder controls swing phase
- p-MRS mechanical sensor manages stance stability
- Adjustable stance flexion
- Manual lock on selected models
- Titanium and aluminium construction
Who the Proteor Symphony suits
For transfemoral users at K3 activity level who want deep flexion and a low build height. The limit drops to 100 kg for hip prostheses and very active use. Variant choice and setup are handled by a prosthetist.
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
- 0.92 kg (2.0 lb)
- Max user weight
- 100 kg (220 lb). 125 kg standard; 100 kg for hip prosthesis or highly active use
The same units on every product, converted from the specifications below. Where a source gives two limits, the lower one is shown.
Proteor Symphony specifications
| Activity level | K3 |
|---|---|
| Max user weight | 125 kg (275 lb); 100 kg for hip prosthesis or high active use |
| Knee flexion | 170 degrees |
| Weight | 920 to 1,010 g by variant |
| Build height | 191 to 197 mm (7.5 to 7.75 in) |
| Design | Six-bar polycentric, hydraulic |
| Materials | Titanium and aluminium |
| L-codes | L5814, L5845, L5848, L5850, L5925 |
| Maker country | France |
| Guide price | USD 3,753 (component only) |
| Brand | Proteor |
| Category | Lower limb - knees, hips and leg systems, Mechanical knees |
| Catalog ID | PR-023 |
Compared with the source page on 5 October 2026. Details can change, so we confirm them in your quote. Open the source page.
Proteor Symphony: common questions
How much does the Proteor Symphony knee cost?
The guide price is USD 3,753, a list price for the component alone from the maker's US shop. We confirm the current price in your quote.
What is the weight limit of the Symphony knee?
It takes users up to 125 kg, or 275 lb. For hip prostheses and high active use the limit is 100 kg.
How far does the Symphony knee bend?
The maximum flexion angle is 170 degrees.
How to get a quote for the Proteor Symphony
Add it to your enquiry list
Press Add to enquiry. You can add other products and parts to the same list.
Tell us your country and needs
Send the list with your country, sizes and any options you want. No payment details are asked.
Get a personal reply
You receive availability, a price and delivery options by email, and decide after that.
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