Suitable for submersion (up to 1 metre)
Activity Level 3 4
Impact Level H

The unique, all-new KX07 features a robust, waterproof, polycentric, 4-bar knee in combination with hydraulic swing and stance for a smooth, predictable operation and outstanding geometric stability in all terrain for high-impact and active users.

The resilient and waterproof design makes KX07 ideal for the active user who requires a reliable knee that can withstand wet, muddy or dusty environments.

Key Features

  • Waterproof
  • Sleek, robust design with protective cover
  • Latch to prevent self-adjustment of swing
  • Strengthened & self-aligning bearings protect cylinder from sideloads
  • Shorter build height by 10mm
  • Choice of proximal t-slot attachments

KX07 is designed to take you on your biggest adventures.

Built to withstand the most demanding activities and challenging environments, KX07 lets you take on everything from everyday living to the great outdoors.

Resilient and robust, KX07 provides the high activity user with a rugged and waterproof solution that combines outstanding stability with smooth and predictable operation.


All-terrain Stability

At heel strike, KX07’s design offers excellent geometric stability, reducing the risk of accidental release on varied terrain, while retaining easy initiation of flexion. The polycentric design shortens the limb length during swing, improving ground clearance and helping prevent falls. The inherent characteristics of the hydraulic controls allow the knee to naturally adapt to your speed, providing a smooth and predictable experience and security on slopes and stairs.


Robust Design

The updated design of KX07 is sleeker, tougher and shorter in build height. The aluminum frame, with its strengthened bearings makes KX07 even more robust, and able to support a 150kg wearer. The self-aligning bearing system protects the cylinder from side loads, increasing the durability of the knee.

Comfort and Style

The silicone cover provides a clean look, as well as protecting the knee. The large 160 degree flexion angle makes it easier to move your leg in confined spaces, such as in the car, or under a table.

Multiple User Modes

KX07 provides the opportunity to switch from normal operation to either free-swinging cycling mode, or a flexion lock. The flexion lock, when engaged, locks the knee on flat or sloped terrain, allowing more even loading and improving stability and posture by relieving pressure on the user’s sound limb and lower back.

Easy to maintain

KX07 can cope with challenging environments, from water to dirt and sand. Don’t worry about that muddy bike ride – just rinse with fresh water and dry! 

“Flexible, robust and waterproof – I’m out a lot and I am able to do everything what I want!”

Technical Support

Use the videos below to help guide you through some of the most common fitting tasks with the new KX07. 


KX07 Clinical Evidence Reference

Improvements in Clinical Outcomes using four-bar, polycentric knees compared to monoaxial knees

  • Increased mean prosthetic minimum toe clearance2,4, reducing the likelihood of tripping.
  • Fully satisfies stance phase stability3
  • Acceptable cosmetics for knee disarticulation amputees and trans-femoral amputees with long residua1
  • Meets all the design requirements for paediatric patients3


1. de Laat FA, van Kuijk AA, Geertzen JH, et al. Cosmetic effect of knee joint in a knee disarticulation prosthesis. J Rehabil Res Dev 2014; 51: 1545.
2. Sensinger JW, Intawachirarat N, Gard SA. Contribution of prosthetic knee and ankle mechanisms to swing-phase foot clearance. IEEE Trans Neural Syst Rehabil Eng 2012; 21: 74–80.
3. Andrysek J, Naumann S, Cleghorn WL. Design characteristics of pediatric prosthetic knees. IEEE Trans Neural Syst Rehabil Eng 2004; 12: 369–378.
4. Gard SA, Childress DS, Uellendahl JE. The influence of four-bar linkage knees on prosthetic swing-phase floor clearance. JPO J Prosthet Orthot 1996; 8: 34–40.

See all the Clinical Evidence for every Blatchford product in our Clinical Evidence Finder Tool.

KX07 Technical Data

Max. User Weight:

150kg/3 330lb/3
145kg/4 320lb/4

Build Height:


Product Weight:

2lb 11oz

Knee Flexion:


Control Unit:



36 months


Proximal Adapters

P189310 4 Bolt Pyramid Adapter
239017 Pyramid Male – sliding and rotating


Pyramid Female – sliding and rotating

239092 M36 Adapter
239089 Non-rotating Pyramid with Shift
239032 Full Alignment Kit TF


940091 Cylinder Adjuster Tool