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Meet the
CJ Socket developer

Keith Cornell, Prosthetist and Founder of CJ Socket

Keith Cornell has been a leading specialist in upper and lower prosthetics since 1978.


Known for his personalized care and focus on helping amputees of varying degrees of mobility levels, he's helped pass the Prosthetic Parity legislation in Massachusetts, ensuring comprehensive coverage for prosthetic care under the law. He observed that the vast majority of prosthetic socket issues and failures could be attributed to the patient’s residual limb volume changes (RLVC) and the socket’s rigidity. 


Therefore, he designed and developed the CJ ActivFIT Socket, a truly novel departure from conventional rigid or semi-rigid solid sockets, that allows the patient to easily adjust the fit of the socket to accommodate their limb volume changes, providing them with unprecedented flexibility and comfort and significantly improving their quality of life.

Welcome to the world's next-generation prosthetic socket. 

Career and Education Achievements

Keith Cornell is a highly respected and accomplished prosthetic professional with over 40 years of experience in the industry. He is certified by the American Board for Certification in Prosthetics and holds a BA in Biology from St. Anselm's College.


With his diverse educational background, including certificates from Northwestern University and New York University, Keith has continued to stay at the forefront of prosthetic advancements through ongoing education and professional development.

As the President and co-owner of Cornell Orthotics & Prosthetics, a company founded in 1985, and the President and founder of CJ Socket Technologies, Keith has made significant contributions to the field.


He was instrumental in the passing of the Prosthetic Parity legislation in Massachusetts and has served as the President of the American Orthotic & Prosthetic Association.


In recognition of his contributions, Keith is a Fellow of the American Academy of Orthotists and Prosthetists. He continues to innovate and improve the lives of amputees through his work with CJ Socket Technologies and as the co-founder of the Cornell O&P Amputee Association, a 501c3.

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