Superior Function

Upper Limb

Recognized Experts

Our CEO, Randall Alley, is a recognized authority. He co-developed and was Director of the national UL Program for NovaCare and Hanger, prior to going into private practice, and has fit 100+ UL patients around the world. Many prosthetists call themselves “upper limb experts,” but being an expert is more than having access to components. It’s having specific upper limb experience, coupled with an ability to consistently deliver prostheses that are successfully worn and not just utilized but maximized. 
No one can match our successes with long term wear, comfort, and performance provided by our X-Frame and HiFi Interface, the designs that started a socket revolution.
We are one of a few companies authorized by Mobius Bionics (manufacturers of the LUKE Arm) to fit their system. Mobius understands the importance of having a comfortable, stable and secure interface to support their advanced LUKE arm, and Mobius (DEKA) witnessed first-hand the benefits of the HiFi and X-Frame interface’s seamless integration of wearer to their arm system.


We are experts in all upper limb components, control strategies, and systems including passive, body-powered, adaptive, and myoelectric devices. We provide prostheses, partial hands/digits, and silicone restorations, but really enjoy working with those who push for highest function.
We evaluate each patient to determine the ideal rehabilitation strategy, including describing the advantages and limitations of the various options. We utilize our interactive HiFi Imager to capture your limb shape, and will test your EMG signals using our VirtuLimb.
We are the inventors of the Expedited Fitting Protocol, ideal for out of state/out of country visitors. This streamlined process delivers you a superior prosthesis in half the time. 


Randall Alley has presented his upper limb work internationally and co-developed accessories to improve user functionality.
BAHA  – replaces the Northwestern Ring, offering enhanced function and comfort for those with body-powered harnesses.
Sure-Lok – world’s first cable lock and retainer system for body-powered prostheses.
MagValve – world’s first threadless valve for suction sockets.

I want the best prosthesis.

Experience the biodesigns difference.

HiFi Interface with ilimb multi-articulating hand. “With the HiFi I am much more comfortable and my prosthesis is very stable. I often forget I am wearing my prosthesis. In my old socket, I was extremely limited. Thank you biodesigns for giving me my life back.”
HiFi Interface, Espire Hybrid Elbow, electric lock, and TASKA multi-articulating hand. “I am grateful to biodesigns. I use my arm everyday, most of the day.”
HiFi Interface with ilimb hand. “I was in standard sockets before my HiFi’s and they felt bulky, loose and heavy. My HiFi’s feel connected to me – they feel lighter, comfortable, secure and I forget they are there. I’m able to wear them in hot Georgia weather without worrying about them falling off.”

Captain DuVal in his HiFi with TASKA multi-articulating hand. “The HiFi is the best socket available. My HiFi provides me with rock-solid stability and functionality, even under extreme forces and physical challenges. Without the HiFi, I wouldn’t have been able to re-qualify for active duty.”
biodesigns’ X-Frame Thoracic Interface with Mobius’ LUKE Bionic Arm (with multiarticulating shoulder and compound wrist)
Former Head of the VA Fred Downs using his HiFi Interface and Gen 2 LUKE Bionic Arm for the first time, during the Defense Advanced Research Projects Agency’s (DARPA) “Revolutionizing Prosthetics Program.”