Interesting article.
There is such a range with hip dysplasia, I can see that tight swaddling could lead to an increase in certain areas.
DD had hip dysplasia, on one side there was virtually no socket - she came out like that - swaddling would have made zero difference.
DS does not have hip dysplasia but on his first ultrasound (ultrasound was automatic due to sibling with the condition) he was borderline and had to have another at six weeks at which point he was considered ok - (the hips keep developing after birth so I can see why swaddling in the early days could have an impact). He was never swaddled (only maybe in the hospital once or twice where they seem hell bent on it for some reason) - nothing to do with hips but because I don't like the idea of it at all - I would hate it personally so wouldn't do it to my two (each to their own though, I know some adults love tight heavy blankets). I also could never get my head round the concept, they have a startle reflex yes but to me it seemed easier to let them get used to startling themselves and falling back to sleep when they are newborns than later on (worked ok with my two - but all babies are different).
Anyway I can see how tight swaddling (also heard the can never be too tight etc etc) could have led to DS hips not developing so well over those six weeks due to restricted movement. I do think there is better diagnosis now, and I suspect the fact babies are bigger than they used to be, carried less (wraps and other carriers often position babies legs in a good position for hip development), mothers are more sedentary - office jobs etc, all has an impact on its incidence.
Whether or not there is a resurgence in tight swaddling as mentioned in the article I am not sure, but in hospital swaddling was something that seemed to be deemed absolutely necessary and there was no mention of any disadvantages of swaddling.




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