Clinical Research Directory

Inclusion Criteria: * Age: \<= 6 months of chronological age at time the maturation period is initiated (hip centred). * Diagnosis of DDH confirmed on standardised coronal hip ultrasound per institutional protocol, with measurement of α angle and femoral head coverage, meeting one of two entry phenotypes: * Decentred hip at presentation (subluxated/dislocated, femoral head coverage \< 40%) * Centred dysplastic hip at presentation (femoral head coverage ≥ 40%, α \< 60°) * Treatment plan: Deemed suitable for Pavlik harness as per institutional guidelines. Exclusion Criteria: * Previous treatment: Prior use of Pavlik harness, alternative brace, or surgical intervention for DDH. (Clarification: for infants presenting with decentred hips, enrolment is only after sonographic centring; the pre-enrolment harnessing used to achieve centring does not constitute prior treatment, and does not preclude participation) * Decentred hips failing to centre by 3 weeks in harness, requiring transition to fixed abduction brace or surgical reduction. * Secondary non-idiopathic dysplasia: Known neuromuscular disorders, connective tissue disorders, or genetic syndromes (e.g. spina bifida, arthrogryposis, Ehlers-Danlos syndrome). * Prematurity: Infants born at \<34 weeks gestational age. * Medical contraindications to safe Pavlik use or study procedures. * Concurrent research participation: Enrolment in another interventional clinical trial that may confound outcomes.