Imaging Update on Developmental Dysplasia of the Hip With the Role of MRI

Starr, Vanessa; Ha, Bo Yoon

doi:10.2214/ajr.13.12449

Cited by 63 publications

(42 citation statements)

References 33 publications

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“…3B, D). The α angle should not be determined as the average angle, but rather as the largest angle [2]. …”

Section: Developmental Dysplasia Of the Hipmentioning

confidence: 99%

“…A Graf β angle greater than 55° is abnormal. With superolateral femoral head displacement, the labrum is elevated, thereby increasing the β angle [2,8]. …”

Section: Developmental Dysplasia Of the Hipmentioning

confidence: 99%

“…Multiple risk factors have been described, including breech positioning in utero , being the first-born child, oligohydramnios, family history, female sex, and deformities (postural or structural) of the foot and torticollis. In addition, increased joint laxity in the setting of exposure to maternal estrogens during the perinatal period may play a role in the development of DDH, and the left hip is more frequently affected than the right [2,3]. …”

Section: Introductionmentioning

confidence: 99%

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Ultrasonography of the pediatric hip and spine

Kang

Koo

2017

Ultrasonography

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Ultrasonography (US) is a useful screening method for the diagnosis of developmental dysplasia of the hip (DDH) and congenital spinal anomalies in infants. In addition, US is a useful, noninvasive imaging modality for the diagnosis of transient synovitis in children. The early detection of DDH leads to a better prognosis without surgical intervention. Moreover, spinal US allows the detection of congenital malformations and can also demonstrate normal anatomy and normal variants that may resemble disorders. Therefore, radiologists should be familiar with the sonographic anatomy of the normal infant hip, scanning and measurement techniques for DDH, the US features of transient synovitis in children, spinal US techniques, and the US features of normal anatomical structures, normal variants, and congenital spinal anomalies.

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“…3B, D). The α angle should not be determined as the average angle, but rather as the largest angle [2]. …”

Section: Developmental Dysplasia Of the Hipmentioning

confidence: 99%

“…A Graf β angle greater than 55° is abnormal. With superolateral femoral head displacement, the labrum is elevated, thereby increasing the β angle [2,8]. …”

Section: Developmental Dysplasia Of the Hipmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ultrasonography of the pediatric hip and spine

Kang

Koo

2017

Ultrasonography

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“…The modified Graf grading classification (four types listed in ►Table 2) is based on the α angle and degree of acetabular roof coverage. 12,13 When monitoring is performed in the Pavlik harness, the infant is left in the harness, and only static images are obtained. 14 Color Doppler imaging may be used to evaluate perfusion to the proximal femoral epiphysis, although there is little published on this topic.…”

Section: Congenital/developmentalmentioning

confidence: 99%

Update on Pediatric Hip Imaging

Herregods

Vanhoenacker

Jaremko

et al. 2017

Semin Musculoskelet Radiol

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Hip disorders are common in children. Prompt diagnosis and treatment are important because of the potential complications. Symptoms are frequently nonspecific, and clinical examination can be difficult and unreliable, especially in smaller children. Therefore, imaging can be valuable. Radiography and ultrasound remain the initial imaging modalities of choice. Increasingly, magnetic resonance imaging is obtained for assessing the pediatric hip, although the long imaging time and need for sedation may limit its use in daily practice. Because of the exposure to ionizing radiation, the use of computed tomography and bone scintigraphy in children is limited to selected cases. Pediatric hip pathology varies depending on patient age. This article provides an overview of common hip pathologies in children including congenital and developmental pathologies, trauma, infectious processes, inflammatory disease, and neoplasm. The age of the child, history, and clinical examination are essential to narrow down the differential diagnosis and subsequent selection of the appropriate imaging modality.

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“…It provides superior soft tissue resolution in cross-sectional imaging pro les without ionizing radiation and has been advocated for the assessment of acetabular morphology and growth disturbance or de ciencies of the capital femoral epiphysis, the discrimination of ossi ed and unossi ed components, especially the identi cation of joint congruity and obstacles to prevent the reduction of hip dislocation, and the detection of unexpected complications after surgical reduction. [8] However, there is few studies to systematically explore the abilities of MRI in DDH to detect the various obstacles, including thickened brofatty pulvinar tissue, joint effusion, thickened ligamentum teres, inversion of the labrum, hypertrophy of the cartilage of the acetabular roof, and iliopsoas muscle atrophy, to concentric reductions, which is the treatment goal of DDH and critical for better prognosis.. [9,10] The present study aimed to evaluate the capability of MRI for precisely detecting the irreducible mechanisms preventing concentric hip reduction in DDH before surgery, and its applicability in guiding clinical treatment.…”

Section: Introductionmentioning

confidence: 99%

Assessment of irreducible aspects in developmental hip dysplasia by magnetic resonance imaging

Jia

Wang

Chang

et al. 2020

Preprint

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We aimed to assess the diagnostic capability of magnetic resonance imaging (MRI) for irreducible aspects preventing hip reduction in developmental dysplasia of the hip(DDH). With pathological results or intraoperative findings as the gold standard, the sensitivity and specificity of MRI were 90.3% and 83.3% for the affected labrum, 92% and 83.3% for thickening of the round ligament, 90.0% and 91.3% for atrophy of the iliopsoas muscle, and 100% and 100% for fibrofatty pulvinar tissue and joint effusion, respectively. The MRI showed an extraordinary capability of detecting these irreducible factors and helped surgeon choose the appropriate treatment strategies.

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Imaging Update on Developmental Dysplasia of the Hip With the Role of MRI

Cited by 63 publications

References 33 publications

Ultrasonography of the pediatric hip and spine

Ultrasonography of the pediatric hip and spine

Update on Pediatric Hip Imaging

Assessment of irreducible aspects in developmental hip dysplasia by magnetic resonance imaging

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