In medical settings, CPO stands for Certified Prosthetist-Orthotist. It’s a healthcare professional who is trained and credentialed in both prosthetics (artificial limbs) and orthotics (braces and supportive devices). The dual certification means a CPO can evaluate patients, design custom devices, fit them, and manage ongoing care for people who need either type of support.
What a CPO Actually Does
A Certified Prosthetist-Orthotist works directly with patients who need external medical devices to restore function or provide structural support. On the prosthetics side, that means designing and fitting artificial limbs for people who’ve lost an arm or leg due to injury, disease, or surgery. On the orthotics side, it means creating braces, splints, and supports for body parts weakened by injury, neurological conditions, or bone and muscle disorders.
The day-to-day work follows a clinical process: evaluating the patient’s condition and needs, developing a treatment plan, building or customizing the device, fitting it, and then following up over time to adjust and maintain it. A CPO working with a new amputee, for example, would assess the residual limb, take measurements or digital scans, fabricate a prosthetic socket that fits precisely, align the components, and then see the patient repeatedly as their body changes and they learn to use the device. For someone recovering from a stroke, that same CPO might design a custom ankle-foot brace to help them walk safely again.
How CPO Differs From CP and CO
The credentials break down into three tiers. A Certified Prosthetist (CP) specializes only in artificial limbs. A Certified Orthotist (CO) specializes only in braces and supports. A CPO holds both certifications, meaning they’ve completed the education, residency, and exams for each discipline. The American Board for Certification in Orthotics, Prosthetics and Pedorthics (ABC) awards the CPO credential when a practitioner has fulfilled all requirements for both sides.
In practice, the dual credential makes a CPO more versatile. Many patients need both types of care, and a CPO can manage the full picture without referring between specialists. This is especially valuable in smaller clinics, rural areas, or settings like VA hospitals where one practitioner may serve a wide range of needs.
Conditions a CPO Treats
The range of patients who see a CPO is broad. Common scenarios include:
- Limb loss: designing custom prosthetic legs or arms for people after amputation, whether from diabetes-related complications, vascular disease, trauma, or cancer
- Scoliosis: fitting spinal braces to manage curvature, particularly in adolescents
- Stroke recovery: creating ankle-foot orthoses that help patients regain the ability to walk
- Arthritis: building custom knee braces to reduce joint pain and improve stability
- Post-surgical support: fitting spinal or limb orthoses after operations on bones, joints, or the spine
The common thread is that each patient needs a device precisely shaped to their body. Off-the-shelf braces from a pharmacy serve a different purpose. A CPO works with medical-grade, custom-fabricated devices that require clinical expertise to design and fit correctly.
Education and Certification Requirements
Becoming a CPO requires a master’s degree in orthotics and prosthetics from a program accredited by the Commission on Accreditation of Allied Health Education Programs (CAAHEP). After graduating, candidates must complete a supervised clinical residency: 12 months per discipline, or 18 months for the combined dual-discipline track. The residency takes place in a comprehensive, accredited orthotic and prosthetic facility.
Once the residency is finished, candidates sit for certification exams that include both written and simulation components. The process is rigorous enough that practitioners who already hold one credential (CP or CO) and want to extend to CPO must separately meet all the education and experience requirements for the second discipline. There’s no shortcut to the dual certification.
Salary and Job Growth
The median annual pay for orthotists and prosthetists was $78,310 as of May 2024, according to the Bureau of Labor Statistics. Employment in the field is projected to grow 13% from 2024 to 2034, which the BLS categorizes as “much faster than average.” That growth is driven largely by an aging population, rising rates of diabetes (a leading cause of amputation), and advances in prosthetic and orthotic technology that expand what these devices can do for patients.
CPOs work in a variety of settings: private orthotic and prosthetic practices, hospitals, rehabilitation centers, and VA medical facilities. Some also work for device manufacturers or in research roles developing new technologies.
Other Uses of “CPO” in Healthcare
While Certified Prosthetist-Orthotist is the most common medical meaning, you may occasionally see CPO used as shorthand for Chief Patient Officer or Chief Patient Experience Officer. This is a hospital leadership role focused on improving how patients experience care, including satisfaction, communication, and overall quality. It’s an administrative position, not a clinical one, and is far less commonly searched than the prosthetist-orthotist credential. If you encountered “CPO” in a clinical or rehabilitation context, it almost certainly refers to the certified practitioner.