Background <p>The intricacy of pin-site care and fixator modification makes caring for children having limb lengthening surgery extremely taxing on parents. Their self-efficacy, which is essential for positive postoperative results, is frequently lowered by this stress. Traditional teaching approaches might not be able to offer the ongoing assistance required to preserve caregiver confidence and lower stress levels.</p> Aim <p>To examine the nursing microlearning (snippet-based) intervention on parents’ burden and self-efficacy in caring for their children undergoing limb lengthening surgery.</p> Methods <p>The present study was carried out utilizing a one-group pretest–posttest research design. Setting: The present study was conducted at the inpatient pediatric surgical department, at Benha Specialized Pediatric Hospital in Benha city. Study sample: A purposive sample of 55 parents accompanying their children undergoing limb lengthening surgery. Study tools: Five tools were used for data collection, Tool I: A structured interviewing questionnaire. Tool II: Child medical data. Tool III: Parents’ reported practices checklist. Tool IV: Caregiver Self-Efficacy Scale. Tool V: Burden interviewing questionnaire.</p> Results <p>Satisfactory knowledge increased from 16.4% pre-intervention to 87.3% post-intervention (<i>p</i> &lt; 0.001), and competent practice increased from 21.8% to 89.1%. In addition, the proportion of parents with high self-efficacy increased from 10.4% to 41.7% (<i>p</i> &lt; 0.001), while the proportion experiencing low parental burden decreased from 16.4% to 5.5%.</p> Conclusion <p>The nursing snippet-based intervention may be associated with improvements in parents’ knowledge, practice, and self-efficacy and reducing parental burden. Integrating microlearning into routine pediatric orthopedic discharge education may support continuity of care beyond the hospital setting.</p> Clinical trial number <p>Not applicable.</p>