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Meet Professional and Clinical Services

Ottobock’s Professional and Clinical Services department has the largest and most experienced staff in the industry. Whether you’re a practitioner, a technician, or someone who uses our products, we’re here to provide the best possible information, accessibility and support.


Mark Edwards CP, MHPE

Director of Professional and Clinical Services 612 702 9884

Mark provides the leadership for Fabrication Services as well as the Clinical Services for Ottobock. Mark has been working in the prosthetic field since 1980, with over 20 years as the Director of Education at Northwestern University’s Prosthetics-Orthotics Center. Mark loves travelling the country and working with great people, and finds it very rewarding to help people overcome their mobility challenges.


Byron Backus CP

Clinical Specialist Prosthetics 612 747 7988

In the field since 1990 Byron joined Ottobock in 2003. His current role with Ottobock is as a clinical prosthetist for Cooperative Care. His job is to work with customers and their patients to help achieve great outcomes for difficult or unusual fitting problems.


Gerald Stark PhD, MSEM, CPO/L, FAAOP

Senior Upper Limb Clinical Specialist 612 270 7363

Gerald has been working as a clinician, engineer, and instructor since 1992. Before joining Ottobock, Gerry served as the Vice-President of Product Development and Education at Fillauer for 15 years where he directed clinical education, onsite consultation, and product development. He joined Ottobock in 2012 as a Senior Upper Limb Clinical Specialist and travels the country providing clinical education. He has a PhD in Organizational Learning and Leadership as well as a Mechanical Engineering degree.


Ariel B. Cabana CPO

Clinical Specialist, West Region 612 481 5613

Ariel has been working with prosthetics since 2004. As a Clinical Specialist in Prosthetics, Ariel has the privilege of bringing microprocessor knee technology to clinicians and users around the country. She is delighted to see the impact this technology can make in a person’s life. She is an avid skier and extremely excited that the Genium MPK offers a downhill skiing mode.


Liz Hillen M.Ed., LCPO

Clinical Specialist Orthotics, East Region 612 532 5994

Liz is a Licensed and Certified Prosthetist Orthotist, with a Master of Education degree in Exercise Physiology, B.S. Degree in Prosthetics and Orthotics, B.A. Degree in Human Performance and Kinesiology. With over 20 years’ experience in prosthetics and orthotics, physical rehabilitation, and health and fitness, Liz appreciates the multi-disciplinary clinical approach in working with healthcare providers and patients in establishing functional advantages and long-term physical gains. Prior to her work with Ottobock, Liz worked as a Clinic Manager and Prosthetist Orthotist with Hanger Orthopedic Group, specializing in adult and pediatric prosthetic and orthotic care, stance control KAFO systems, Walk-Aide neuroprosthetics, pediatric cranial remodeling, microprocessor prosthetic systems, scoliosis corrective devices, diabetic and wound care specialty care, and orthopedics. Previous to this, Liz held various positions as an Exercise Physiologist and Rehab Aquatic Specialist, Orthopedic Clinical Sales Manager, and Certified Personal Fitness Trainer with Strength and Conditioning and Rehabilitation specialty certifications.


Cale Konetchy CP

Clinical Specialist Prosthetics 612 423 7244

Cale Konetchy is an ABC certified prosthetist who graduated magna cum laude from the University of Wisconsin, Eau Claire with a B.S. in Biology in 1998. He earned his prosthetics certificate from Century College in White Bear Lake, MN in May of 2002. After graduation, Cale spent seven years working in direct patient care to include managing a private orthotic and prosthetic clinic in Woodbury, MN. Cale has been working for Ottobock since 2008 teaching courses on lower extremity prosthetics in hospitals, clinics, and universities throughout the United States. Cale’s daily goal is to facilitate the best possible prosthetic outcomes for our customers and their end users.


Curt Kowalczyk CO

Clinical Specialist, East Region 612 859 4004

Curt became a Certified Orthotist in 1985 and came to Ottobock in 2007. Curt develops and provides orthotic clinical education for both custom and custom-fit products. Curt enjoys working with customers and their patients to achieve the right design for the right patient.


Tim Shride CPO, FAAOP

Clinical Specialist, West Region 612 203 0936

Tim is an ABC Certified Prosthetist/Orthotist. He joined Ottobock Professional and Clinical Services as a Clinical Specialist in 2009. His responsibilities include presenting introductory and advanced courses on upper limb prosthetic technology, and developing educational materials. As a Clinical Specialist for Ottobock, he has presented locally, nationally and internationally. Prior to joining Ottobock, he was in clinical practice in New England and the Pacific Northwest for 8 years. He is a graduate of the University of Washington with a BS in Prosthetics and Orthotics and a BA in Business Administration.


Erica Swanson CP, MOT, OTR/L

Clinical Specialist, Central Region 612 203 0571

Erica has been working in the field since 2007, and joined Ottobock in 2011. In her current role as a PCS Clinical Specialist, Erica travels around the U.S. fitting MP Knees and teaching courses. Erica enjoys the fact that her position lets her both teach and participate in patient care, and she loves educating patients and practitioners on current trends in prosthetic technology.


Annie Hess, CP

Upper Limb Clinical Specialist 512 585 4835

Annie Hess, CP has had a passion for upper limb prosthetics since her first class in O&P school, and has pursued additional experience and knowledge in this area since. She attended the prosthetics and orthotics program at the University of Washington, and has worked with and for several upper limb specialists. Annie is the secretary of the AAOP’s Upper Limb Prosthetic society and the first woman to serve as an officer. She authored the chapter on body-powered UL components for the 4th edition of the Atlas of Amputations and Limb Deficiencies. She lives in San Jose and is enjoying her new field based position travelling all over the country!


Ted Friedmann, CO

Clinical Specialist, Orthotics 512 808 9587

Ted received his advanced specialty diploma in Orthotics from Century Community College in White bear lake Minnesota and his  Bachelors in Manufacturing Technology from the University of Northern Iowa. Ted has been a certified clinical orthotist since 2005. He practiced for 8 years at Chladek O and P and 3 years at Hanger clinic in Des Moines, Iowa. He now is traveling the country supporting our customers for all their orthotic needs.


Jackie Casey OT, MSc BSc Hons

Clinical Specialist - Mobility Solutions 737 207 1068

Jackie has been working in the field of seating and positioning in various capacities since graduating as an occupational therapist in 1994. She worked as a lecturer and program director at the University of Ulster, Northern Ireland, before joining Ottobock in 2016. Jackie enjoys that her job enables her to continue teaching, travel, and work with patients while helping our customers to create optimum seating solutions for our clients.