Do double nappies treat hip dysplasia?
Written by Dr. Mutasem Aldhoon, pediatric orthopedic consultant · Medically reviewed by the Baby Hip Center pediatric orthopedic team · Last reviewed September 1, 2026
Double nappying does not treat hip dysplasia. It cannot hold the hips in the position needed to reshape a socket, and no study has shown it corrects a dysplastic or dislocated hip. It is harmless as a way of keeping a baby's legs comfortably apart, but it is not a substitute for a harness or brace.
Double nappying is suggested surprisingly often — sometimes by a clinician, more often by a relative or a parenting forum. The reasoning sounds plausible: hip dysplasia is treated by holding the legs apart, and two nappies hold the legs apart. Unfortunately the amount matters.
Why it does not work
- A harness holds the hips bent to around 90° and spread to a specific angle, continuously. A second nappy produces a few degrees of spread and no flexion at all.
- Nappies compress, slip and are changed many times a day, so any position they create is intermittent.
- Reshaping a socket depends on the head of the femur pressing on the right part of it for weeks. Intermittent, shallow positioning does not deliver that.
- Reviews of treatment for developmental dysplasia of the hip do not include double nappying among effective options.
The real risk is delay
The window where a harness works easily closes at around six months. Months spent double nappying while waiting to see whether it helps is the part that does harm — not the nappies themselves.
What double nappying is reasonable for
- Nothing more than comfort and habit — plenty of families use it and it does no damage.
- Sometimes as a way of encouraging a hip-healthy wide-legged position in a baby with no dysplasia at all.
- It is not a treatment, a holding measure, or a way to avoid a harness.
What to do instead if you have been told to double nappy
- 1Ask directly: is this instead of treatment, or while we wait for a scan or an appointment?
- 2Ask when the ultrasound is booked, and what the plan is if it is abnormal.
- 3If your baby is approaching three months with a known abnormal scan and no treatment plan, ask for a pediatric orthopedic referral rather than waiting for the next routine review.
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Read next
- The Pavlik harness: week by week, and what to expect
How the Pavlik harness works, the usual 6-12 week timeline, bathing and skin care, sleep and clothing, and what happens if it does not work.
- Hip dysplasia treatment by age: newborn to walking
Treatment depends far more on your baby's age than on the severity alone. What is usually offered at birth, 3 months, 6 months, and after walking age.
- Reading your baby's hip ultrasound: Graf types I to IV explained
What Graf type I, IIa, IIb, IIc, III and IV mean on your baby's hip ultrasound report, and what each type usually means for treatment.
This page is general information about developmental dysplasia of the hip, not a diagnosis of your own baby. It does not replace examination by your baby's doctor, and it is not for emergencies.