Quality of Life of Children with Lower Limb Deformities: A systematic review of patient-reported outcomes and development of a preliminary conceptual framework International multiphase mixed methods study protocol to develop a patient-reported outcome instrument for children and adolescents with lower limb deformities What matters to children with lower limb deformities; an international qualitative study informing the development of LIMB-Q Kids. Establishing content validity of LIMB-Q Kids: A new patient-reported outcome measure for lower limb deformities. LIMB-Q Kids—German Translation and Cultural Adaptation Danish Linguistic Validation and Cultural Adaptation of the LIMB-Q Kids