Hip Screening Ultrasound Follow-Up
Medically reviewed by Dr. Michael Okonkwo, MD, FAAP · Board-Certified Neonatologist
Content reviewed against published AAP, AAP guidelines
Last reviewed:
If your baby has been diagnosed with or you suspect hip screening ultrasound follow-up, here is what the evidence says.
The short answer
A hip ultrasound may be recommended for your baby based on risk factors for developmental dysplasia of the hip (DDH), including breech presentation, family history of DDH, or findings on physical exam. The ultrasound is painless and helps ensure the hips are developing normally. Early detection and treatment of DDH leads to excellent outcomes.
Key takeaways
- A hip ultrasound may be recommended for your baby based on risk factors for developmental dysplasia of the hip (DDH), including breech presentation, family history of DDH, or findings on physical exam. The ultrasound is painless and helps ensure the hips are developing normally. Early detection and treatment of DDH leads to excellent outcomes.
- Usually normal when: Hip ultrasound shows normal development (Graf type I)
- Call your doctor if: Baby suddenly stops moving one leg or seems in pain with hip movement
- Varies by age — see the age-by-age breakdown below
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What Parents Should Know
According to AAP guidelines, a hip ultrasound may be recommended for your baby based on risk factors for developmental dysplasia of the hip (DDH), including breech presentation, family history of DDH, or findings on physical exam. The ultrasound is painless and helps ensure the hips are developing normally. Early detection and treatment of DDH leads to excellent outcomes. At 0-1 month, hip ultrasounds are typically ordered at 4-6 weeks of age. They may be recommended for: breech presentation at any point in the third trimester, family history of DDH (especially in a parent or sibling), clinical hip exam findings (instability, limited abduction, asymmetric skin folds), or swaddling concerns. The ultrasound is painless and takes about 10-15 minutes. It shows the hip joint in detail and can detect dysplasia before it becomes clinically apparent. If the ultrasound is normal, no further screening is needed. It is generally considered normal when hip ultrasound shows normal development (Graf type I). However, you should contact your pediatrician promptly if baby suddenly stops moving one leg or seems in pain with hip movement.
Normal vs. Concerning
By Age
What to expect by age
0-1 month
Hip ultrasounds are typically ordered at 4-6 weeks of age. They may be recommended for: breech presentation at any point in the third trimester, family history of DDH (especially in a parent or sibling), clinical hip exam findings (instability, limited abduction, asymmetric skin folds), or swaddling concerns. The ultrasound is painless and takes about 10-15 minutes. It shows the hip joint in detail and can detect dysplasia before it becomes clinically apparent. If the ultrasound is normal, no further screening is needed.
1-3 months
If the hip ultrasound shows mild immaturity (Graf type IIa in babies under 3 months), repeat imaging may be recommended in 4-6 weeks, as many of these hips mature on their own. If dysplasia is confirmed, treatment with a Pavlik harness is typically started. The harness is most effective when started early (before 6 months).
3-6 months
If the ultrasound was normal at 6 weeks, no further hip screening is needed unless new concerns arise. If treatment was started, follow-up imaging monitors progress. After about 4-6 months of age, X-rays replace ultrasound for hip assessment.
6-12 months
Your pediatrician continues to check hips at well-child visits. If DDH was treated and resolved, periodic follow-up may continue to ensure normal hip development as your baby begins to stand and walk.
What to Tell Your Pediatrician
- Describe when you first noticed hip screening ultrasound follow-up and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby has risk factors for DDH and you want to ensure screening has been ordered.
- Mention if you notice asymmetric leg folds or limited hip movement during diaper changes.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Hip ultrasound shows normal development (Graf type I)
- Physical exam shows stable, equal hips
- Baby moves both legs freely and equally
- Your baby has risk factors for DDH and you want to ensure screening has been ordered
- You notice asymmetric leg folds or limited hip movement during diaper changes
- You have questions about the ultrasound results
- Baby suddenly stops moving one leg or seems in pain with hip movement
- A hip clunk is detected on physical exam requiring urgent specialist referral
What You Can Do at Home
- Keep track of when you notice hip screening ultrasound follow-up — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that hip ultrasound shows normal development (Graf type I) — this is generally within the range of normal.
- At 0-1 month, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Follow any care instructions from your pediatrician. Keep a written log of symptoms to bring to appointments.
- While monitoring at home, seek immediate care if baby suddenly stops moving one leg or seems in pain with hip movement.
Related Conditions
Baby Hip Dysplasia (Hip Click)
Developmental dysplasia of the hip (DDH) is a condition where the hip joint does not form properly, ranging from mild looseness to complete dislocation. It occurs in about 1 in 1,000 births and is more common in firstborns, girls, breech babies, and those with a family history. When caught early, treatment with a soft brace (Pavlik harness) is highly effective.
Hip Clicks During Diaper Changes
Soft clicking sounds from your baby's hips during diaper changes or leg movements are very common and usually harmless. These clicks are typically caused by ligaments and tendons snapping over the joint and are different from a true hip "clunk," which may indicate hip instability. Your pediatrician checks the hips at every well-child visit.
Related Resources
Frequently asked questions
Is hip screening ultrasound follow-up normal?
When should I call the doctor about hip screening ultrasound follow-up?
When is hip screening ultrasound follow-up normal?
What causes hip screening ultrasound follow-up?
What should I mention to my pediatrician about hip screening ultrasound follow-up?
Is hip screening ultrasound follow-up normal at 0-1 month?
Is hip screening ultrasound follow-up normal at 1-3 months?
Should I go to the ER for hip screening ultrasound follow-up?
Does hip screening ultrasound follow-up go away on its own?
References
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss Hip Screening Ultrasound Follow-Up.
Things to mention
- Describe when you first noticed hip screening ultrasound follow-up and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your baby has risk factors for DDH and you want to ensure screening has been ordered.
- Mention if you notice asymmetric leg folds or limited hip movement during diaper changes.
- Let your doctor know if you have noticed any related concerns, such as changes in feeding, sleep, or movement patterns.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Your baby has risk factors for DDH and you want to ensure screening has been ordered
- You notice asymmetric leg folds or limited hip movement during diaper changes
- You have questions about the ultrasound results
Urgent signs to report immediately
- Baby suddenly stops moving one leg or seems in pain with hip movement
- A hip clunk is detected on physical exam requiring urgent specialist referral
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of hip screening ultrasound follow-up are normal. Talk to your pediatrician if baby suddenly stops moving one leg or seems in pain with hip movement.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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Related Medical Concerns
Baby Hip Dysplasia (Hip Click)
Developmental dysplasia of the hip (DDH) is a condition where the hip joint does not form properly, ranging from mild looseness to complete dislocation. It occurs in about 1 in 1,000 births and is more common in firstborns, girls, breech babies, and those with a family history. When caught early, treatment with a soft brace (Pavlik harness) is highly effective.
Hip Clicks During Diaper Changes
Soft clicking sounds from your baby's hips during diaper changes or leg movements are very common and usually harmless. These clicks are typically caused by ligaments and tendons snapping over the joint and are different from a true hip "clunk," which may indicate hip instability. Your pediatrician checks the hips at every well-child visit.
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