Swaddling has many benefits and has grown in popularity among U.S. parents. However, traditional swaddling as practiced in many cultures with the legs fully extended and wrapped together can cause hip subluxation and dislocation (see Figure 1). This has been known for decades, long before swaddling was widely practiced in North America.

The AAP Section on Orthopaedics has teamed up with the Pediatric Orthopaedic Society of North America (POSNA) and the International Hip Dysplasia Institute (IHDI) to promote “hip-healthy swaddling.”

The IHDI has issued the following statement with support from POSNA, “It is the recommendation of the International Hip Dysplasia Institute that infant hips should be positioned in slight flexion and abduction during swaddling. The knees should also be maintained in slight flexion. Additional free movement in the direction of hip flexion and abduction may have some benefit. Avoidance of forced or sustained passive hip extension and adduction in the...

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