Standing radiological analysis with a low-dose biplanar imaging system (EOS system) of the position of the components in total hip arthroplasty using an anterior approach

Morvan, Antoine; Moreau, S.; Combourieu, B.; Pansard, E.; Marmorat, J.-L.; Carlier, Robert; Judet, T.; Lonjon, Guillaume

doi:10.1302/0301-620x.98b3.36289

Cited by 19 publications

(7 citation statements)

References 38 publications

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“…Recently, researchers have used a standing radiological method with low-dose biplanar radiography (EOS) to evaluate functional CA. Morvan et al used the EOS system to evaluate the component version in THA performed using an anterior surgical approach; however, they did not introduce the specific measurement methods and did not evaluate the consistency between radiographic CA and CT-CA ( 37 ). Esposito et al reported that the mean differences in CA measurements obtained from EOS compared with those obtained from CT were 3°±2° for AA and 4°±4° for FA, which were larger than those obtained in our study ( 38 ).…”

Section: Discussionmentioning

confidence: 99%

Reliability and validity of the functional combined anteversion measurement method using standing lateral radiography after total hip arthroplasty

Zhang¹,

Deng²,

Xu³

et al. 2023

Ann Transl Med

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Background: The functional safe zone of combined anteversion (CA) shows a superior predictive value for dislocation after total hip arthroplasty (THA) compared to that of the Lewinnek safe zone. Thus, it is necessary to establish a feasible and accurate method for assessing CA for the evaluation of dislocation risk.We aimed to evaluate the reliability and validity of using standing lateral (SL) radiographs for determining CA.Methods: Sixty-seven patients who underwent SL radiography and computed tomography (CT) scans after THA were included. Radiographic CA values were obtained via the calculation of the sum of the acetabular cup and femoral stem anteversion (FSA) measurements as obtained from the SL radiographs. Acetabular cup anteversion (AA) was measured based on the tangential line to the face of the cup, whereas FSA was calculated using the developed formula based on the neck-shaft angle. The intra-observer and inter-observer reliabilities for each measurement were examined. Radiological CA values were compared with the CT scan measurements to evaluate their validity. Results:The intra-observer and inter-observer agreements of the SL radiography were excellent [intraclass correlation coefficient (ICC) ≥0.90]. The radiographic measurements correlated well with the CT scan measurements (r=0.869, P<0.001). The mean difference between the radiographic and CT scan measurements was −0.55°±4.68° and ranged from 0.3° to 2.2° in terms of the 95% confidence interval (CI).Conclusions: SL radiography is a reliable and valid imaging tool for the assessment of functional CA.

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Section: Discussionmentioning

confidence: 99%

Reliability and validity of the functional combined anteversion measurement method using standing lateral radiography after total hip arthroplasty

Zhang¹,

Deng²,

Xu³

et al. 2023

Ann Transl Med

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“…Patient selection differed largely between the included articles. All patients were retrospectively selected and there was a large heterogeneity between patients regarding age, comorbidity and indication for THA, all confounders for dislocation according to the literature [ 39 ]. The preferred surgical approach of the studies included, was not taken into consideration.…”

Section: Discussionmentioning

confidence: 99%

The role of the femoral component orientation on dislocations in THA: a systematic review

Erp

Snijders

Weinans

et al. 2021

Arch Orthop Trauma Surg

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Introduction Dislocation remains a major complication in total hip arthroplasty (THA), in which femoral component orientation is considered a key parameter. New imaging modalities and definitions on femoral component orientation have been introduced, describing orientation in different planes. This study aims to systematically review the relevance of the different orientation parameters on implant stability. Methods A systematic review was performed according to the PRISMA guidelines to identify articles in the PubMed and EMBASE databases that study the relation between any femoral component orientation parameters and implant stability in primary THA. Results After screening for inclusion and exclusion criteria and quality assessment, nine articles were included. Definitions to describe the femoral component orientation and methodologies to assess its relevance for implant stability differed greatly, with lack of consensus. Seven retrospective case–control studies reported on the relevance of the transversal plane orientation: Low femoral- or low combined femoral and acetabular anteversion was statistical significantly related with more posterior dislocations, and high femoral- or combined femoral and acetabular anteversion with anterior dislocations in two studies. There were insufficient data on sagittal and coronal component orientation in relation to implant stability. Conclusion Because of incomparable definitions, limited quality and heterogeneity in methodology of the included studies, there is only weak evidence that the degree of transverse component version is related with implant stability in primary THA. Recommendations about the optimal orientation of the femoral component in all three anatomical planes cannot be provided. Future studies should uniformly define the three-dimensional orientation of the femoral component and systematically describe implant stability.

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“…The system has been validated over many years of study for the evaluation of spinal alignment and THA parameters including acetabular anteversion, femoral component anteversion, and pelvic tilt. 17…”

Section: Weight-bearing Imaging and Stereoradiographymentioning

confidence: 99%

Utility of Upright Weight-bearing Imaging in Total Hip Arthroplasty

DelSole

Mercuri

2019

Semin Musculoskelet Radiol

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Planning for total hip arthroplasty (THA) has traditionally been performed using static supine anteroposterior radiographs of the pelvis. Recent advances in imaging technology and the understanding of human spinopelvic kinematics have made weight-bearing radiography an important adjunct to supine imaging. Hip surgeons can use weight-bearing imaging to optimize THA component position to prevent hip instability and early component wear. The goal of this narrative review is to delineate the fundamentals of spinopelvic kinematics, the benefits of surgical planning using weight-bearing radiography, and the underpinnings of upright full-body stereoradiography as a useful adjunct to traditional supine radiographs.

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Standing radiological analysis with a low-dose biplanar imaging system (EOS system) of the position of the components in total hip arthroplasty using an anterior approach

Abstract: EOS imaging system is helpful in the pre-operative and post-operative radiological analysis of total hip arthroplasty.

Cited by 19 publications

References 38 publications

Reliability and validity of the functional combined anteversion measurement method using standing lateral radiography after total hip arthroplasty

Reliability and validity of the functional combined anteversion measurement method using standing lateral radiography after total hip arthroplasty

The role of the femoral component orientation on dislocations in THA: a systematic review

Utility of Upright Weight-bearing Imaging in Total Hip Arthroplasty

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