Untreated hip Dysplasia?

Tayla🌼 • Two daughters 🌸🌸 13month Gap. 👶🏼 👶🏼 👼 healing from loss 😭 at 11 weeks pregnant. NOW -🌈 👶🏼 on board

Have anyone bub had hip dysplasia and it was missed at birth and picked up at 7 months ?? How is it treated if your baby crawls and nearly walks ?!