Evaluation of ultrasonographic angle and linear parameters in the diagnosis of developmental dysplasia of the hip

Irha, Ernest; Vrdoljak, Javor; Vrdoljak, Ozren

doi:10.1097/00009957-200401000-00002

Cited by 5 publications

(8 citation statements)

References 12 publications

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“…Sonographic measurements of anatomical specimens in a water bath demonstrated comparable reproducibility for the two methods [23] but only a few clinical studies have been published to date [24-26]. Czubak [25] and Falliner [24] found a significant correlation (p < 0.01) between the α-angle and the FHC.…”

Section: Discussionmentioning

confidence: 99%

Reproducibility of different screening classifications in ultrasonography of the newborn hip

et al. 2010

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BackgroundUltrasonography of the hip has gained wide acceptance as a primary method for diagnosis, screening and treatment monitoring of developmental hip dysplasia in infants. The aim of the study was to examine the degree of concordance of two objective classifications of hip morphology and subjective parameters by three investigators with different levels of experience.MethodsIn 207 consecutive newborns (101 boys; 106 girls) the following parameters were assessed: bony roof angle (α-angle) and cartilage roof angle (β-angle) according to Graf's basic standard method, "femoral head coverage" (FHC) as described by Terjesen, shape of the bony roof and position of the cartilaginous roof. Both hips were measured twice by each investigator with a 7.5 MHz linear transducer (SONOLINE G60S® ultrasound system, SIEMENS, Erlangen, Germany).ResultsMean kappa-coefficients for the subjective parameters shape of the bony roof (0.97) and position of the cartilaginous roof (1.0) demonstrated high intra-observer reproducibility. Best results were achieved for α-angle, followed by β-angle and finally FHC. With respect to limits of agreement, inter-observer reproducibility was calculated less precisely.ConclusionsHigher measurement differences were evaluated more in objective scorings. Those variations were observed by every investigator irrespective of level of experience.

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Section: Discussionmentioning

confidence: 99%

Reproducibility of different screening classifications in ultrasonography of the newborn hip

et al. 2010

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“…6,7 Next to Graf’s method of quantification other methods and techniques have been published, however, there is no consensus about the most adequate method for quantification and classification of DDH. 4,8 The most commonly used methods for evaluation and quantification are the methods according to Graf and Morin and Terjesen. 7-10 Graf’s method focuses on acetabular morphology, measuring the angle of acetabular inclination (α-angle) and the acetabular roof angle (β-angle).…”

Section: Introductionmentioning

confidence: 99%

Correlation between ultrasonic and radiographic imaging of developmental dysplasia of the hip

Spaans

Beek

Uiterwaal

et al. 2019

Journal of Children's Orthopaedics

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Purpose The correlation between the degree of developmental hip dysplasia (DDH) measured on ultrasound images compared with that measured on radiographs is not clear. Most studies have compared ultrasonography (US) and radiographic images made at different times of follow-up. In this study the correlation between US images and radiographs of the hip made on the same day was evaluated. Methods US images and radiographs of both hips of 74 infants, who were treated for stable DDH, were reviewed in a retrospective study. Only infants who had an US examination and a radiograph on the same day were included. Results The correlation between α-angle of Graf and femoral head coverage on US was strong (p ≤ 0.0001). Weak correlations were found between the acetabular index of Tönnis on radiographs and α-angle of Graf on US (p = 0.049) and between acetabular index of Tönnis on radiographs and femoral head coverage of Morin on US (p = 0.100). Conclusion This study reports on the correlation between US and radiographic imaging outcomes, both made on the same day in patients for treatment and follow-up of DDH. Level of Evidence IV

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“…The acetabular cartilage complex lays down a cartilaginous template that becomes ossified. 16 We measured the coverage of the femoral head by the cartilaginous acetabular mass with an inclination angle that was similar to osseous acetabulum measurement by the a-angle. [9][10][11] Angular parameters that determine the relationship between the osseous and cartilaginous part of the acetabulum are more suitable for screening acetabular development.…”

Section: Discussionmentioning

confidence: 99%

A New Measurement Method in Graf Technique

Yavuz

Uraş

Taşbaş³

et al. 2014

Journal of Pediatric Orthopaedics

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Evaluation of ultrasonographic angle and linear parameters in the diagnosis of developmental dysplasia of the hip

Cited by 5 publications

References 12 publications

Reproducibility of different screening classifications in ultrasonography of the newborn hip

Reproducibility of different screening classifications in ultrasonography of the newborn hip

Correlation between ultrasonic and radiographic imaging of developmental dysplasia of the hip

A New Measurement Method in Graf Technique

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