This observational study aims to assess the presence of neuropathic pain in children and adolescents who underwent limb amputation during childhood.

The study focuses on two types of neuropathic pain: phantom limb pain and residual limb pain. It also evaluates quality of life and functional autonomy in this population and explores potential associations between neuropathic pain, autonomy, quality of life, and age at amputation.

Using a mixed retrospective and prospective design, data are collected from medical records and standardized questionnaires administered during routine follow-up visits at a specialized pediatric limb anomaly center. The study seeks to improve understanding of neuropathic pain after pediatric amputation and its impact on daily functioning.

Pediatric limb amputations are rare and may occur in the context of trauma, infection, tumors, or congenital malformations. In some congenital conditions, such as proximal femoral focal deficiency, therapeutic amputation may be proposed to improve prosthetic fitting, functional outcomes, and autonomy. One of the potential complications associated with limb amputation is the development of neuropathic pain, including phantom limb pain and residual limb pain. While these conditions are well documented in adults, their prevalence and impact in pediatric populations remain poorly understood.

Neuropathic pain may interfere with prosthetic use, functional abilities, quality of life, and long-term autonomy. In children who undergo amputation for functional purposes, the presence and consequences of neuropathic pain are important factors to consider when weighing the expected benefits of surgery. Early identification and management of neuropathic pain may also allow better anticipation and implementation of preventive or therapeutic strategies.

This monocentric observational study aims to describe the presence of neuropathic pain in children and adolescents who underwent limb amputation during childhood. Neuropathic pain is assessed using validated questionnaires, distinguishing between phantom limb pain and residual limb pain. The study also evaluates quality of life and functional autonomy using age-appropriate standardized assessment tools.

In addition, the study explores associations between neuropathic pain and functional autonomy, quality of life, age at amputation, and preoperative preventive treatments when applicable. Data are collected through a mixed retrospective and prospective approach, combining extraction of medical record information and a single administration of questionnaires during routine follow-up visits. No intervention or modification of standard clinical care is performed.

By providing descriptive data on neuropathic pain and its functional consequences after pediatric amputation, this study aims to contribute to improved clinical decision-making, pain management strategies, and long-term follow-up of children with limb amputations.

Inclusion Criteria:

• Patients aged between 5 and 18 years (inclusive) (Piaget's concrete operational stage to be able to complete the self-assessment questionnaires)
• Patients who underwent amputation before the age of 15 for girls and 16 for boys (average age of completion of lower limb growth)
• Patients who have not undergone surgery on the amputated limb for at least one year (to avoid bias, as any surgery involving incision can cause temporary neuropathic pain unrelated to the amputation)
• Have obtained the signature of the non-objection form by both parents/legal guardians
• Have obtained the child's consent (verbal consent but recorded)
• Be affiliated with a health insurance plan.

Exclusion Criteria:

• Patients who do not speak French
• Patients whose cognitive abilities are insufficient (as determined by a clinician or reported by parents) to be able to complete self-assessment questionnaires
• Patients undergoing chemotherapy (due to transient neuropathic pain)
• Patients who have received chemotherapy and whose side effects have not yet subsided (on a case-by-case basis depending on the chemotherapy used)
• Patients who have received chemotherapy causing neuropathic pain due to this treatment that has not disappeared.
• Patients placed under protective custody.

The study population consists of children and adolescents aged 5 to 18 years who underwent limb amputation during childhood and are followed at a specialized pediatric referral center for limb anomalies.

Participants include individuals with upper limb and/or lower limb amputation, regardless of the etiology of amputation. The study population includes both prosthesis users and non-prosthesis users. Data are collected using retrospective medical record review and a single prospective assessment with standardized questionnaires administered during routine follow-up visits, without any modification of standard clinical care.

Individual participant data will not be shared due to the observational design of the study, the pediatric population involved, and the need to protect sensitive medical and functional data. Data are pseudonymized and handled in accordance with applicable data protection regulations, and no public data-sharing plan is planned.