Lax ligament syndrome in children associated with blue sclera and bat ears

Area of Science:

• Pediatrics
• Genetics
• Rheumatology

Background:

• Delayed motor development in children often raises concerns for serious neurological or muscular conditions.
• When conditions like cerebral palsy, mental retardation, and muscular dystrophy are excluded, alternative diagnoses must be considered.

Purpose of the Study:

• To identify and characterize children presenting with delayed motor milestones and specific physical features.
• To investigate the prevalence and nature of 'lax ligament syndrome' in a pediatric outpatient setting.

Main Methods:

• Retrospective review of 35 children referred to a pediatric outpatient clinic over two years.
• Clinical assessment of children with hypermobile joints, blue sclera, and bat ears, excluding other major diagnoses.

Main Results:

• Thirty-five children (19 boys, 16 girls) were diagnosed with lax ligament syndrome.
• Presentations varied by age, including clicking hips in infancy, delayed motor milestones and bottom shuffling in toddlers, 'growing pains' or 'funny gait' in preschoolers, and multiple minor complaints in older children.

Conclusions:

• Lax ligament syndrome is a common, mild, dominantly inherited collagenopathy.
• Early diagnosis and reassurance are crucial, as the condition typically improves with time and requires expectant, symptomatic management.