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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 is the Director of Professional and Clinical Services for Ottobock North America.  He was formerly the Director of Prosthetics Education at Northwestern University's Prosthetics-Orthotics Center.  He has his Master's degree in Health Professions Education from the University of Illinois at Chicago and has been certified in prosthetics by the American Board for Certification since 1985.  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, LP

Clinical Specialist Prosthetics 612 747 7988

Byron Backus is a certified prosthetist with the American Board for Certification (ABC) who received his diploma as a prosthetic practitioner from Northeast Metro Technical College (now Century College) in 1990, after receiving a Bachelor of Arts in Biology and Chemistry in 1982. Byron worked at Shriners Hospital for Children from 1990 – 2003, until he joined Ottobock in 2003. His responsibilities at Ottobock include creating and teaching educational courses for practitioners as well as coordinating prosthetic Cooperative Care fittings, which involves working with customers and their patients to help achieve great outcomes for difficult or unusual fitting problems.


Ariel B. Cabana CPO

Clinical Specialist, West Region 612 481 5613

Ariel Cabana, CPO studied Prosthetics and Orthotics at the University of Washington in Seattle, WA. She received a Bachelor of Science in P&O and then moved to NYC to complete her residencies in both disciplines. Her work in NYC at the Hospital for Special Surgery enabled her to travel to Ghana, Africa and treat underserved people with prosthetic and orthotic needs. She worked in private practice early in her career and then worked for Hanger Prosthetics and Orthotics. She has always wanted to work in education and has been delighted to work with Ottobock HealthCare as a clinical specialist in Prosthetics. She joined Ottobock in July, 2009. Her primary role involves providing clinical education related to microprocessor knees, socket technologies and the C-Brace orthotronic mobility system.

Brian Frasure, CP

Clinical Specialist Prosthetics 919 522 8883

Brian’s passion for prosthetics was ignited by his career as a Paralympic sprinter.  As a ABC Certified Prosthetist, Brian has over 20 years’ experience in advanced prosthetics as a world-class amputee athlete, patient care provider, and as a bionic clinical expert. He has spent the past 14 years working with prosthetic manufacturers to advance bionic technology, most recently serving 7 years as the Director of Clinical Operations with Bionx.  Brian joined ottobock in 2017 following the acquisition of Bionx Medical Technologies.  There, he plans to continue his life mission of assisting other amputees in regaining their mobility, confidence and independence.  Brian has a BS in Engineering from North Carolina State, and he received his ABC certification from Northwestern University in 1998.


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.

Stephanie Porter MS, CPO

Clinical Specialist Prosthetics 781 611 5607

Stephanie is an ABC Certified Prosthetist-Orthotist, who has been supporting the BiOM and Empower ankles for the last six years. Stephanie earned her Masters in Exercise Science at Georgia State University before learning about O&P and making her way to Connecticut. She graduated from The Newington Certificate Program in 2001/2002 and completed her residencies in practices throughout Connecticut, before heading west to Colorado. During her time in patient care, she was a Practice Manager for Hanger and CPM, working with both adult and pediatric orthotic and prosthetic patients in the Denver metro area. While in Colorado, Stephanie also served as the Residency Director for Hanger in the state of Colorado and as an NCOPE Regional Residency liaison. Stephanie joined the Ottobock team in 2017 by way of the BionX acquisition. She believes in the power of mobility to improve a patient's overall health, and enjoys helping clinicians redefine what is possible for their patients.


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 Swanson, CP, MOT, OTR/L, received her certification in prosthetics from California State University in 2005 after completing her Master's degree in occupational therapy from the University of North Dakota in 2004.  Erica then received her ABC certification in prosthetics in 2007.  After several years of working in the field and gaining experience with working with a variety of levels of amputation among a diverse population of clients, including pediatrics, adult, geriatrics, and athletes, Erica decided to make the career change into education.  In 2011 Erica joined Ottobock and is now working as a Clinical Specialist for both upper and lower extremity prosthetics.  She travels the nation fitting patients with advanced prosthetic technology and teaches certification courses to train prosthetists and therapists to fit this high-tech componentry.


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.