Table 3.

Secondary outcomes

Daily (ecological)	Measurements
Pedometer	Number of steps
Patients-Reported Outcomes Measures (PROMs)
- 2 PROMs about indirect assessment of the stump volume variation:
1.a “How many times have you removed your prosthesis during the day (not counting the evening’s removal) to add compensation sheaths? “	0, 1, 2, 3, 4, >4,
1.b “Did you have the fear at one (or more) moment(s) of the day, of losing your prosthesis, that it would come off by itself? “	VASa: 0 = not at all 10 = yes a lot
- 2 PROMs on the limb-prosthesis fitting:
2.a “Do you feel in control of your prosthesis, as if the prosthesis is one with you?”	VASa: 0 = not at all 10 = perfectly
2.b “Do you feel pistoning movement of your prosthesis when walking (sensation of vertical movement of the prosthesis because of the stump when walking)?”	VASa: 0 = not at all 10 = yes a lot
- Wearing time of the prosthesis	In hours
At each phase change visit twiceb
Functional walking parameters
- L-Test [20]
- 6-minute walk test [21]
Satisfaction and balance questionnaires
- Quebec User Evaluation of Satisfaction with assistive Technology (QUEST)c [21, 22]
- Activities-specific Balance Confidence-Simplified (ABC-S) scale [23]

^aVAS Visual Analogue Scale

^bBefore and after the prosthetist checks OR connects/disconnects the Unity system

^cThe assessment tool was developed simultaneously in French and English. In French, the assessment is entitled ÉSAT for “Évaluation de la Satisfaction envers une Aide Technique”