Inclusion Criteria:

FOR PATIENT-USER :

• Age ≥ 18 years
• Effective use of a CE-marked upper-limb assistance device for at least 60 days
• Access to a computer with an internet connection and ability to participate in a videoconference
• Having provided free and informed non-opposition, or, where applicable, their legal representative
• Cognitive abilities compatible with completing the questionnaires and interviews
• Medically stable (no ongoing medical event likely to affect the proper conduct of the study)

FOR CAREGIVER-USERS (RELATIVES AND/OR PROFESSIONALS) :

• Age ≥ 18 years
• Relatives or professionals living with or regularly interacting with the patient-user of an upper-limb assistance device
• Access to a computer with an internet connection and ability to participate in a videoconference
• Having provided free and informed non-opposition

Exclusion Criteria:

FOR PATIENT-USER :

• Participant enrolled in another protocol evaluating a technical aid
• Insufficient mastery of the French language

FOR CAREGIVER-USERS (RELATIVES AND/OR PROFESSIONALS)

• Insufficient mastery of the French language
• Cognitive impairments preventing understanding of the questions