Safety Comparison Between Microprocessor Knees and non-Microprocessor Knees Through Stair and Ramp Negotiation for Above-Knee Amputee Prosthetic Wearers

Date of Award

Summer 6-30-2023

Document Type

Non Thesis

Degree Name

Master of Science in Orthotics and Prosthetics



First Advisor

Darren Wiens

Second Advisor

Lana Huberty



The aim of this study is to observe the function and perceived reliability of two types of prosthetic knee units. A direct comparison will be made between a microprocessor knee unit and a non- microprocessor knee unit from the same company weighed against a control group. This study offers mixed methods results whereby a randomization crossover design allows participants to trial both types of knee units. Participants will be recruited at a research university testing site and have their current prosthesis evaluated by a residing clinician for the criteria that must be met for the trials involved. Patients will have 3 months to acclimate from their NMPK to an MPK or vice versa and rated based on visual observation data and standardized indexes.

The data will be further analyzed and separated based on the patient’s demographic, user experience, and health data. The results from the trials will be statistically analyzed and weighed against the other experimental group and again and against the control group. A self reported survey will be provided on the day of the testing to analyze the subject’s notion toward the reliability of the device they are currently using. Follow up surveys and further analysis of video data will be used to enhance the validity of the data reported. Limitations and further research for this study will be suggested.

This document is currently not available here.