Pavlik's 1953 paper describes a retrospective series of 245 dislocated hips in 176 infants treated with his novel harness, which permitted active hip movement rather than rigid immobilisation. The central question: can allowing motion during reduction maintain reduction rates while eliminating the osteonecrosis burden of prior methods?
Every standard DDH treatment before 1945 — plaster casts, rigid abduction splints. Forced the hip into a fixed position, and osteonecrosis rates hovered near 28%. Pavlik's core insight was that immobilisation itself, not the dislocation, destroys the femoral head.
When you diagnose DDH in an infant under 6 months, the Pavlik harness is first-line. Apply it, confirm the hip reduces, and follow closely. Most reductions happen within two months.
If the hip is still dislocated at two weeks of harness wear, remove the harness. Persisting in a dislocated position past this threshold significantly raises osteonecrosis risk. A principle validated by subsequent practice even though Pavlik's original paper did not state it explicitly.
Watch for femoral nerve palsy in the first week after application, especially in older or larger infants with more severe dysplasia. Resolution within 3 days predicts continued harness success; persistent palsy beyond 10 days usually means the harness has failed and the hip will need another approach.
Pavlik's 1953 paper describes a retrospective series of 245 dislocated hips in 176 infants treated with his novel harness, which permitted active hip movement rather than rigid immobilisation. The central question: can allowing motion during reduction maintain reduction rates while eliminating the osteonecrosis burden of prior methods?
Every standard DDH treatment before 1945 — plaster casts, rigid abduction splints. Forced the hip into a fixed position, and osteonecrosis rates hovered near 28%. Pavlik's core insight was that immobilisation itself, not the dislocation, destroys the femoral head.
When you diagnose DDH in an infant under 6 months, the Pavlik harness is first-line. Apply it, confirm the hip reduces, and follow closely. Most reductions happen within two months.
If the hip is still dislocated at two weeks of harness wear, remove the harness. Persisting in a dislocated position past this threshold significantly raises osteonecrosis risk. A principle validated by subsequent practice even though Pavlik's original paper did not state it explicitly.
Watch for femoral nerve palsy in the first week after application, especially in older or larger infants with more severe dysplasia. Resolution within 3 days predicts continued harness success; persistent palsy beyond 10 days usually means the harness has failed and the hip will need another approach.