Development and evaluation of a sensor system to monitor the stance-phase control function of the Automatic Stance-Phase Lock (ASPL) mechanism

Prosthetic Knee Sensor Development


Our lab has developed a prosthetic knee joint mechanism for above-knee amputees, it is called the Automatic Stance-Phase Lock (ASPL). The ASPL has already been tested in indoor labs with elaborate equipment. Now, we've developed  a sensor to test the knee in real-life conditions and we'd like you to help us test the sensor.


Jan Andrysek, PhD, PEng

Participate in this study

Want to help improve a novel prosthetic knee? Consider participating in our study!

Who can participate

We are looking for able-bodied adults willing to wear a prosthetic simulator to participate in our study. To volunteer for this study, you must be above the age of 18, weigh less than 100kg (220lbs), be at least 140cm (5’ 7”) tall, be a strong, independent walker, and be able to communicate in English.

What's Involved

Participants will be asked to attend 2 sessions, each lasting 2 hours. The first session will involve gait training and the second will be for data collection. Participants will be asked to perform several walking trials along a 10 meter walkway. The loading and function of the knee will be recorded for our analysis using the developed series of sensors. You may feel some discomfort on your skin from the simulator, and bearing weight on your knee may result in muscle or joint stiffness.

All sessions will take place at Holland Bloorview Kids Rehabilitation Hospital. Participation in this study is voluntary and participation will not affect relationships with Holland Bloorview or the University of Toronto.


Ongoing until recruitment is completed.

Interested in participating

If you are interested in participating in this study or have additional questions, please contact Jessica Tomasi at or (416) 806-9514 with your interest, and she will get back to you shortly. Contacting us does not obligate you to participate in this study.

Funding Agency

Canada Foundation for Innovation

Natural Sciences and Engineering Research Council

Learn more about this study