The primary aim of this study was to find the reliability of Kinovea software in measuring parameters associated with sagittal plane knee kinematics during gait in transtibial amputees. The secondary objective was to calculate the absolute reliability by calculating the Standard Error of Measurement (SEM), SEM% and Minimal Detectable Change at 95% confidence interval (MDC95). The SEM value represents the extent to which a score changes during the repetition of the measurement. The MDC is the minimum change in the measurement that is considered a true change in the measured activity that is not due to error.

Inclusion Criteria:

• Having a unilateral below-knee (transtibial) level amputation,
• Using a prosthesis and being able to walk with the prosthesis,
• Body mass index less than 30,
• No contracture in the intact or amputated knee.
• Not having had any surgery related to the knees.

Individuals who have unilateral transtibial amputation