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. 2024 Feb;34(2):1079-1086.
doi: 10.1007/s00590-023-03771-z. Epub 2023 Nov 7.

Length of treatment and ultrasound timing in infants with developmental dysplasia of the hip

Christos Georgios Dragonas  1 , Eleni Kottaridou  2 , Themistoklis Vampertzis  3   4 , Lina Abbakr  5 , Narmeen Taha  5 , Dimitrios Manoukian  5   3
Affiliations

Length of treatment and ultrasound timing in infants with developmental dysplasia of the hip

Christos Georgios Dragonas et al. Eur J Orthop Surg Traumatol. 2024 Feb.

Abstract

Purpose: Developmental dysplasia of the hip (DDH) joint is a complex condition that may lead to severe problems. Ultrasound scan (USS) in the first four-to-six weeks of life is considered the gold-standard for diagnosis while the Pavlik harness (PH) is a widely utilized method as first-line treatment. The purpose of this study is to compare clinical outcomes of infants with DDH in relation to the timing and frequency of USS following application of the PH.

Methods: Retrospective data were collected over a 5-year period from February 2017 to February 2022. We included patients who underwent the first USS post-diagnosis and PH application in two, three, four and six weeks. Two-hundred-twenty-five patients were included and divided in four groups according to timing of the first follow-up: week-2, n = 13; week-3, n = 66; week-4, n = 95; and week-6, n = 51. For every patient Graf classification, treatment length and number of follow-ups were documented.

Results: Week-3 and week-4 groups displayed a statistically significant shorter treatment length compared to week-6 group (p value < 0.001), while also demonstrating a lower number of sonographic follow-ups per patient compared to both week-6 (p value < 0.001) and week-2 (p value = 0.002 vs week-3; p value < 0.001 vs week 4). Week-4 group presented the highest treatment completion (56%) on first visit post-diagnosis. Conservative treatment with PH failed in 1.8% (4/225) and displayed no significant difference among all subgroups.

Conclusions: Differences in timing of first USS post-DDH diagnosis and initiation of treatment can lead to discrete outcomes with implications to the clinical outcome and cost effectiveness.

Keywords: Developmental dysplasia of the hip; Graf angle; Infant; Length of treatment; Pavlik harness; Ultrasound scan.

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