Aim: To study psychosocial adjustment and mental health in children with upper-limb reduction deficiency and amyoelectric prosthetic hand. Methods: Sixty-two parents of children aged 8 to 18 y old answered a questionnaire concerning competence and behaviour/emotional problems in their children. Of the 62 children, 37 adolescents aged 11 to 18 y old answered questionnaires concerning competen-ce, problems and mood state. The results were compared with Swedish normative data. The children were divided into five groups based on degree of myoelectric prosthetic use. Results: Children with upperlimb reduction deficiency and a myoelectric prosthetic hand showed social competence and behaviour/emotional problems similar to Swedish standardized norms. However, withdrawn behaviour was significantly higher in all children, social competence was significantly lower in girls, and social activities were significantly lower in older children with upper-limb reduction deficiency. There was a significant difference between prosthetic use groups. Non-users had significantly more delinquent behaviour problems than full-time users. There was an interaction between gender and prosthetic use in their affect on competence and behaviour/emotional problems, yielding two contrasting patterns. Conclusion: Children with upper-limb reduction deficiency and a myoelectric prosthetic hand are as well adjusted psychosocially as their able-bodied peers. There are indications, however, of social stigmata related to the deficiency, which have to be considered differently in boys and girls. Aim: To study psychosocial adjustment and mental health in children with upper-limb reduction deficiency and amyoelectric prosthetic hand. Methods: Sixty-two parents of children aged 8 to 18 y old answered a questionnaire concerning competence and behavior / emotional problems in their children. Of the 62 children, 37 adolescents aged 11 to 18 y Old acknowledged entries in competen-ce, problems and mood state. The results were compared with Swedish normative data. The children were divided into five groups based on degree of myoelectric prosthetic use. : Children with upperlimb reduction deficiency and a myoelectric prosthetic hand showed social competence and behavior / emotional problems similar to Swedish standardized norms. However, withdrawn behavior was significantly higher in all children, social competence was significantly lower in girls, and social activities were significantly lower in older children with upper-limb reduction deficiency. There was a signific Non-users had significantly more delinquent behavior problems than full-time users. There was an interaction between gender and prosthetic use in their affect on competence and behavior / emotional problems, yielding two contrasting patterns. Conclusion: Children with upper-limb reduction deficiency and a myoelectric prosthetic hand are as well adjusted psychosocially as their able-bodied peers. There are indications, however, of social stigmata related to the deficiency, which have to be considered distinguished in boys and girls.