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The problems with Fixed Volume Ischial Weight Bearing Sockets have one thing in common. 

Patient feedbacks vary, but essentially they’re all about the same issue. Socket volume.

Ischial discomfort or pain 

- Anterior wall impingement in sitting 

- Request lowering the anterior trim line 

- Request modify ischial containment  

- Complain the socket tore clothes  

- Complain that the socket is too bulky 

- Complain too hot 

Our ActivFIT socket is designed to solve all these frequently experienced issues with socket volume.

Our proven process produces results



CJ Socket-certified prosthetists can order ActivFIT Sails from the factory.

Visit our Training page for details on our half-day course.

You take the ActivFIT Sail measurements from your modified cast or scan.


You send the ActivFIT Sail Order Form to CJ Socket Technologies factory and we’ll turn it around within 24 business hours from receipt of the order.


You fabricate the J-shaped socket and install the finished ActivFIT Sail onto your socket.

Don’t have a lab, or not CJ Socket Certified? Contact us about C-Fab partners or download an order form from one of our CJ Certified Central Fabricators to receive a complete

CJ ActivFIT Socket.


You deliver an ActivFIT user adjustable volume CJ Socket to your patient. Additionally, you can easily adjust the fit using common prosthetic lab equipment.

*CJ Socket-certification is required before you can place an order directly with the factory

Although the CJ Socket is relatively simple, there are pitfalls if done incorrectly.  All prosthetists are encouraged to register for a one day certification course regarding the revolutionary CJ Socket design.  We are committed to your success and will provide training and certification at your facility or online.


If you are not a CJ Socket-certified prosthetist, please view the Training page for course Agenda and additional information.

Order the ActivFIT Socket

At CJ Socket, we understand the importance of providing patients with the best possible prosthetic experience. That's why we've partnered with a network of certified C-Fab locations to make ordering a customized ActivFIT socket as easy as possible. Simply find a C-Fab location near you, place your order, and watch as your patients' mobility and quality of life improves with the next generation of assistive sockets.

Choose a C-Fab partner to order your ActivFIT socket


Keith Cornell’s new socket design at ‪#‎OPWorldCongress‬ is intriguing. May combine the best of ischial containment and flexible sockets, with fewer of the drawbacks of either.
One of the two new socket designs now being offered for above knee amputees. This design is called the CJ Socket and offers amazing improvements in comfort and adjustability. Set up an appointment today to find out if this is a good option for you. 

Pat Peick, CPO

Thank you for inventing the CJ Socket and making it available to the Prosthetist’s toolbox.  I attended your excellent one day seminar which was one of the best I have ever attended for depth of knowledge and completeness of any new technique.  There will be many amputees across the country who will smile many more times in the day due to the CJ Socket.  I truly liked the seminar and the technique, and you have a naturally educational demeanor.
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