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PubMed This is a summary of 17 peer-reviewed journal articles Updated
Orthopedics

Long-Term Monitoring and Life After Treatment

At a Glance

After treatment for developmental dysplasia of the hip, children need individualized follow-up as their bones grow. Exams and X-rays can detect residual socket shallowing early, while ongoing orthopedic care helps protect hip function and support an active life.

Successfully completing initial treatment for Developmental Dysplasia of the Hip (DDH) is a major milestone, but it is not the end of the journey. Because your child’s hips will continue to grow and change until they reach skeletal maturity (when the bones stop growing in the late teens), long-term monitoring is essential [1][2]. For most children, the outlook is excellent, and they go on to live active lives without routine sports restrictions [3][4].

The Follow-Up Schedule

There is no “one-size-fits-all” schedule for follow-up, as it depends heavily on the severity of the initial DDH, the type of treatment your child received, and the orthopedic team’s specific protocol.

  • Individualized Surveillance: For some children with a mild history, normal exams and X-rays at age 2 may allow the surgeon to reduce the frequency of visits. However, this is not a universal stopping rule [5][1].
  • Continued Monitoring: Children who had dislocations, required surgery, or show signs of residual dysplasia are often monitored every 1 to 2 years until they are fully grown [6][2].
  • Always Follow Your Team’s Plan: Do not stop attending follow-up appointments unless your orthopedic surgeon explicitly discharges your child from their care.

Understanding Residual Dysplasia

Sometimes, even after the hip has been successfully treated, the socket remains too shallow or doesn’t grow quite right. This is called residual acetabular dysplasia [7].

Because this condition is often painless in children, doctors use X-rays to track specific measurements. No single number diagnoses a problem; the surgeon interprets age-adjusted trends. They evaluate:

  • Acetabular Index (AI): This measures the “slope” of the socket. As a child grows, this angle should decrease (become flatter). (For illustration, if the AI remains above 25°–30° by age 4 or 5, it may indicate the socket is staying too shallow [8][9]).
  • Center-Edge Angle (CEA): This measures how much of the “ball” is covered by the “socket” roof in older children [8][10].
  • Shenton Line: A smooth, imaginary curve on the X-ray that should be continuous. If this line is “broken,” it suggests the hip is not correctly positioned [8][11].

If these measurements show significant and persistent shallowing, your surgeon might recommend a substantial bone-reshaping operation (an osteotomy) to provide better coverage and prevent future problems [8][9].

Why Long-Term Care Matters

The goal of treating DDH is to protect the hip for decades. If significant residual dysplasia is left unmanaged, the hip joint doesn’t distribute weight evenly. This creates extra “wear and tear” on the cartilage [12][13].

Without proper follow-up, untreated severe DDH can lead to:

  • Early Osteoarthritis: Wear and tear can lead to painful arthritis [13][14]. While risk is higher with untreated dysplasia, the exact timing varies widely based on the individual hip.
  • Labral Tears: The “lip” of cartilage around the socket (the labrum) can tear due to the extra stress of an unstable joint, causing sharp pain or clicking [15].
  • Hip Replacement: DDH remains a notable cause of early total hip replacement when not adequately managed [16][17].

Reassurance for the Future

While the list of potential complications can seem concerning, remember that early and consistent care changes the story. Children who are treated appropriately and followed closely by an orthopedic team have very low rates of long-term disability [4]. By staying diligent with follow-up appointments and adhering to your team’s individualized plan, you are giving your child the best chance at a lifetime of healthy movement.

Common questions in this guide

How long will my child need follow-up after DDH treatment?
The schedule depends on how severe the DDH was, the treatment used, and how the hip develops. Some children with mild disease and normal age-2 exams and X-rays have fewer visits, while children with dislocation, surgery, or residual dysplasia are often checked every 1 to 2 years until growth is complete. Continue visits until the orthopedic surgeon says follow-up is no longer needed.
What is residual acetabular dysplasia after DDH treatment?
Residual acetabular dysplasia means the hip socket remains too shallow or does not grow normally even after the hip has been treated. It can be painless in children, so orthopedic clinicians use age-appropriate X-rays and trends to monitor it. If shallowing persists, an osteotomy may improve coverage.
Which measurements show whether the hip socket is developing normally?
On X-rays, the acetabular index describes the slope of the socket, the center-edge angle describes how much of the ball is covered in older children, and the Shenton line should form a smooth continuous curve. Doctors interpret these measurements together and compare them with age-adjusted trends; no single number proves that a problem is present.
Can hip dysplasia cause problems later in life?
Significant residual dysplasia can distribute weight unevenly and increase wear on the joint. Over time, this may contribute to early osteoarthritis, a labral tear, or the need for hip replacement, although the timing and risk vary. Appropriate treatment and follow-up help lower the chance of long-term disability.
Can children with treated DDH play sports?
Most children who are treated appropriately can live active lives without routine sports restrictions. Families should still tell the orthopedic team about a limp, hip or groin pain, clicking, or unusual fatigue during activity, because these symptoms may need evaluation.
Why might a child need an osteotomy after DDH treatment?
If X-rays show that the socket remains significantly and persistently shallow, the surgeon may recommend an osteotomy, a bone-reshaping operation. The goal is to improve coverage of the hip ball and reduce future joint problems.

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References

References (17)
  1. 1

    Successful Pavlik Harness Treatment for Developmental Dysplasia of the Hip and Normal X-Ray at the Age of 2 Years: Is a Longer Follow-up Necessary?

    Allington NJ

    Journal of pediatric orthopedics 2017; (37(5)):328-331 doi:10.1097/BPO.0000000000000657.

    PMID: 26422392
  2. 2

    Team Approach: Developmental Dysplasia of the Hip.

    Young JR, Anderson MJ, O'Connor CM, et al.

    JBJS reviews 2020; (8(9)):e20.00030 doi:10.2106/JBJS.RVW.20.00030.

    PMID: 32890048
  3. 3

    Long-term Results of Developmental Hip Dysplasia Under Therapy With Pavlik Harness.

    Gahleitner M, Pisecky L, Gotterbarm T, et al.

    Journal of pediatric orthopedics 2024; (44(3)):135-140 doi:10.1097/BPO.0000000000002575.

    PMID: 38073187
  4. 4

    A comprehensive nonoperative treatment protocol for developmental dysplasia of the hip in infants : a prospective longitudinal cohort study.

    Bradley CS, Verma Y, Maddock CL, et al.

    The bone & joint journal 2023; (105-B(8)):935-942 doi:10.1302/0301-620X.105B8.BJJ-2023-0149.R1.

    PMID: 37524345
  5. 5

    Follow-up after successful treatment for developmental dysplasia of the hip using a Pavlik harness : is two years enough?

    Larwood JPJ, Idowu O, Elliott KGB, et al.

    The bone & joint journal 2025; (107-B(4)):495-500 doi:10.1302/0301-620X.107B4.BJJ-2023-1213.R2.

    PMID: 40164190
  6. 6

    Management of late-detected DDH in children under three years of age: 49 children with follow-up to skeletal maturity.

    Terjesen T, Horn J

    Bone & joint open 2020; (1(4)):55-63 doi:10.1302/2633-1462.14.BJO-2019-0005.R1.

    PMID: 33215108
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    Residual Acetabular Dysplasia in Young Children: a Comprehensive Review of Diagnosis and Management.

    Sang L, Kelly N, Neuner J, Swarup I

    Current reviews in musculoskeletal medicine 2026; (19(1)).

    PMID: 41741802
  8. 8

    Residual Acetabular Dysplasia in the Reduced Hip.

    Baghdadi S, Sankar WN

    Indian journal of orthopaedics 2021; (55(6)):1480-1489 doi:10.1007/s43465-021-00515-1.

    PMID: 35003538
  9. 9

    Assessment and Management of Residual Acetabular Dysplasia from Age 1 to 5 Years: Defining Normal Acetabular Index Values and Indications for Treatment.

    Johnson TR, Pun SY, Morris WZ, et al.

    JBJS reviews 2025; (13(6)) doi:10.2106/JBJS.RVW.25.00062.

    PMID: 40540626
  10. 10

    Twelve to Twenty-year Follow-up of Dega Acetabuloplasty in Patients With Developmental Dysplasia of the Hip: Is it as Effective as Expected?

    Danişman M, Dursun G, Koçyiğit İA, et al.

    Journal of pediatric orthopedics 2024; (44(1)):15-21 doi:10.1097/BPO.0000000000002558.

    PMID: 37909230
  11. 11

    Radiographic criteria in developmental dysplasia of the hip in late infancy, inter and intrareader agreement.

    Alam D, Hallit S, Mandour J, et al.

    PloS one 2025; (20(8)):e0329230 doi:10.1371/journal.pone.0329230.

    PMID: 40811698
  12. 12

    Surgical treatment for young adult hip dysplasia: joint-preserving options.

    Chen M, Shang XF

    International orthopaedics 2016; (40(5)):891-900 doi:10.1007/s00264-015-2927-z.

    PMID: 26216530
  13. 13

    Hip dysplasia in the young adult caused by residual childhood and adolescent-onset dysplasia.

    Pun S

    Current reviews in musculoskeletal medicine 2016; (9(4)):427-434 doi:10.1007/s12178-016-9369-0.

    PMID: 27613709
  14. 14

    Developmental dysplasia of the hip: update of management.

    Vaquero-Picado A, González-Morán G, Garay EG, Moraleda L

    EFORT open reviews 2019; (4(9)):548-556 doi:10.1302/2058-5241.4.180019.

    PMID: 31598333
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    Relationship of self-reported pain, degree of hip dysplasia, and behavioral health diagnosis.

    Richard HM, Strub DR, Tulchin-Francis K, et al.

    Journal of hip preservation surgery 2026; (13(3)):268-272 doi:10.1093/jhps/hnaf071.

    PMID: 42859503
  16. 16

    Family History of Developmental Dysplasia of the Hip is a Risk Factor for the Progression of Hip Osteoarthritis.

    Yoshino S, Yamaguchi R, Tanaka H, et al.

    The Journal of arthroplasty 2024; (39(2)):393-397.e1 doi:10.1016/j.arth.2023.08.026.

    PMID: 37586594
  17. 17

    Fifty percent of patients undergoing periacetabular osteotomy for hip dysplasia showed normal findings upon neonatal ultrasound screening : Symptomatic hip dysplasia in adulthood despite inconspicuous neonatal hip ultrasound.

    Haertlé M, Hawi H, Windhagen H, et al.

    Orthopadie (Heidelberg, Germany) 2023; (52(4)):313-319 doi:10.1007/s00132-023-04357-7.

    PMID: 36930261

This page explains long-term monitoring after DDH treatment for educational purposes only and does not replace medical advice. Your child's orthopedic team should interpret X-rays and set the follow-up plan for your child.

Guide contents developmental dysplasia of the hip
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