Pavlik's 1957 landmark paper introduces the harness-with-stirrups method for congenital hip dislocation in infants. It asks whether active motion — rather than rigid immobilization — can achieve reduction while eliminating the avascular necrosis that plagued passive-mechanical techniques. The paper reports 11 years of outcomes across 1,912 dysplastic hips in 1,424 patients.
Every case of avascular necrosis Pavlik observed occurred in a hip that was immobilized — not in a hip treated with active motion. Zero necrosis in 531 spontaneously reduced hips is a striking signal, and it reframed DDH management entirely: the complication that defined the disease was actually a complication of the treatment.
In practice, this means when you see DDH in an infant under 6 months, the Pavlik harness is your first move. Start it as early as 8–9 weeks. Fit it loosely enough to permit free abduction, and recheck flexion angle frequently. Spontaneous reduction depends on achieving the right position.
If the hip has not reduced by 3–4 weeks in the harness (the Ramsey criteria, developed from Pavlik's principles), that is your threshold to consider closed or open reduction under anesthesia. Continuing a failed harness trial risks posterior acetabular erosion.
The irreversibility of avascular necrosis is Pavlik's most important clinical warning: a steep acetabular roof can be corrected operatively, but a necrotic femoral head cannot. Protecting the femoral head takes precedence over every other goal in DDH management.
Pavlik's 1957 landmark paper introduces the harness-with-stirrups method for congenital hip dislocation in infants. It asks whether active motion — rather than rigid immobilization — can achieve reduction while eliminating the avascular necrosis that plagued passive-mechanical techniques. The paper reports 11 years of outcomes across 1,912 dysplastic hips in 1,424 patients.
Every case of avascular necrosis Pavlik observed occurred in a hip that was immobilized — not in a hip treated with active motion. Zero necrosis in 531 spontaneously reduced hips is a striking signal, and it reframed DDH management entirely: the complication that defined the disease was actually a complication of the treatment.
In practice, this means when you see DDH in an infant under 6 months, the Pavlik harness is your first move. Start it as early as 8–9 weeks. Fit it loosely enough to permit free abduction, and recheck flexion angle frequently. Spontaneous reduction depends on achieving the right position.
If the hip has not reduced by 3–4 weeks in the harness (the Ramsey criteria, developed from Pavlik's principles), that is your threshold to consider closed or open reduction under anesthesia. Continuing a failed harness trial risks posterior acetabular erosion.
The irreversibility of avascular necrosis is Pavlik's most important clinical warning: a steep acetabular roof can be corrected operatively, but a necrotic femoral head cannot. Protecting the femoral head takes precedence over every other goal in DDH management.