Hanger Institute Completes Landmark Mobility Analysis of Amputees (MAAT) Series

MAAT Summary Study
February 21, 2023
Hanger Clinic

The Hanger Institute for Clinical Research and Education recently completed and published the seventh and final study in its Mobility Analysis of Amputees (MAAT) series, which represents the largest national analyses of mobility among lower limb prosthetic users. The series, which has been published regularly since 2017, furthers our understanding of prosthetic mobility as it relates to considerations such as satisfaction, quality of life, comorbid health conditions, and prosthetic component choices.

The prevalence of lower limb amputations in the United States continues to rise with a projected population of 3.6 million amputees by 2050, up from 1.6 million in 2005.1 Accompanying the rise in patients is a shift in healthcare policies that place increased emphasis on patient-centered outcomes as they relate to prosthetic mobility.2,3

While prosthetic rehabilitation has traditionally focused on restoring functional mobility, there is now a need to go beyond that and better understand the impact of improved mobility holistically.

“Hanger is proud of the incredible impact the MAAT series has had on our profession over the last five years. Together with our research partners, we have advanced outcomes-based care and revolutionized the way O&P leverages clinical research to discover best practices for patients. The MAAT series will serve as a springboard that continues to drive advances in evidence-based practice within orthotic and prosthetic care,” said James Campbell, PhD, Hanger Chief Clinical Officer.

MAAT Series White Paper

The MAAT series demonstrates the value of implementing outcome measures as a standard of care for all patients with lower limb loss. Learn about the studies, their results, and most importantly, the impact on orthotic and prosthetic clinical practice.

The MAAT series is comprised of the following seven studies:

Visit our website to review and download the full studies.

“The MAAT series represents the field’s first attempt at leveraging large convenience samples of patient-reported data to better understand the relationships between mobility and such variables as quality of life, satisfaction, comorbid health conditions, and component choices,” stated Phil Stevens, MEd, CPO, FAAOP, a director with Hanger Clinic’s Department of Clinical and Scientific Affairs. “The series demonstrates the value of implementing outcome measures as a standard of care across multiple clinics and retrospective analyses of those findings.”


[1] Ziegler-Graham, K, MacKenzie, EJ, Ephraim, PL, et al. Estimating the prevalence of limb loss in the United States: 2005 to 2050. Arch Phys Med Rehabil 2008; 89(3): 422–429.

[2] Patient Centered Outcomes Research Institute. http://www.pcori.org (accessed July 2017).

[3] Patient-reported outcomes measurement information system. National Institutes of Health Office of Strategic Coordination—the common fund, https://commonfund.nih.gov/promis/index (accessed July 2017).

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