Development and Validation of a New Questionnaire for Caregivers to Assess Hip Pain in Quadriplegic Pediatric Patients: Non-Ambulatory Hip Pain Questionnaire

The goal of this clinical trial is twofold: 1. to develop a questionnaire for care givers to assess hip pain in quadriplegic pediatric patients who are not able to communicate it independently 2. to validate this questionnaire in a cohort of 100 pediatric patients with quadriplegia Researchers will : 1. involve 10 experts (8 multiprofessional clinicians and 2 parents) in a Delphi approach to develop the questionnaire 2. assess construct validity and reliability of the questionnaire submitting it to 100 care givers of pediatric patients with quadriplegia, and comparing results with the Revised Face Legs Activity Cry and Consolability (r-FLACC) Scale assessed by the physiatrist during the visit Participants will: 1. as experts, firstly answer open questions on this topic, secondly evaluate each item of the new questionnaire by means of a 5-point Liekert scale 2. as caregivers of pediatric patients with quadriplegia, fill out the questionnaire within 2 weeks after the visit