Inter- and intra-observer agreement of femoroacetabular impingement (FAI) parameters comparing plain radiographs and advanced, 3D computed tomographic (CT)-generated hip models in a surgical patient cohort

Cadet, Edwin R.; Babatunde, Oladapo M.; Gorroochurn, Prakash; Chan, Andrew K.; Stancato-Pasik, Agata; Brown, Mindy; Johnson, Skylar; Kaiser, Philip; Gardner, Thomas R.; Ayeni, Olufemi R.

doi:10.1007/s00167-014-3315-8

Cited by 24 publications

(22 citation statements)

References 21 publications

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“… 15 , 23 Although originally measured on MRI, a previous study showed little benefit over plain radiographs in improving inter-observer agreement in cam-type FAI morphology. 59 Nevertheless, it remains an important measure of cam-type FAI as adequate correction has been correlated with positive outcome following FAI surgery. 60 …”

Section: Discussionmentioning

confidence: 99%

Surgical treatment of femoroacetabular impingement following slipped capital femoral epiphysis

Oduwole

Kay

et al. 2017

Bone & Joint Research

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ObjectivesThe purpose of this study was to evaluate the existing literature from 2005 to 2016 reporting on the efficacy of surgical management of patients with femoroacetabular impingement (FAI) secondary to slipped capital femoral epiphysis (SCFE).MethodsThe electronic databases MEDLINE, EMBASE, and PubMed were searched and screened in duplicate. Data such as patient demographics, surgical technique, surgical outcomes and complications were retrieved from eligible studies.ResultsFifteen eligible level IV studies were included in this review comprising 261 patients (266 hips). Treatment groups included arthroscopic osteochondroplasty, surgical hip dislocation, and traditional open osteotomy. The mean alpha angle corrections were 32.14° (standard deviation (sd) 7.02°), 41.45° (sd 10.5°) and 6.0° (sd 5.21°), for arthroscopy, surgical hip dislocation, and open osteotomy groups, respectively (p < 0.05). Each group demonstrated satisfactory clinical outcomes across their respective scoring systems. Major complication rates were 1.6%, 10.7%, and 6.7%, for arthroscopy, surgical dislocation and osteotomy treatments, respectively.ConclusionIn the context of SCFE-related FAI, surgical hip dislocation demonstrated improved correction of the alpha angle, albeit at higher complication and revision rates than both arthroscopic and open osteotomy treatments. Further investigation, including high-quality trials with standardised radiological and clinical outcome measures for young patients, is warranted to clarify treatment approaches and safety.Cite this article: K. O. Oduwole, D. de Sa, J. Kay, F. Findakli, A. Duong, N. Simunovic, Y. Yi-Meng, O. R. Ayeni. Surgical treatment of femoroacetabular impingement following slipped capital femoral epiphysis: A systematic review. Bone Joint Res 2017;6:472–480. DOI: 10.1302/2046-3758.68.BJR-2017-0018.R1.

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Section: Discussionmentioning

confidence: 99%

Surgical treatment of femoroacetabular impingement following slipped capital femoral epiphysis

Oduwole

Kay

et al. 2017

Bone & Joint Research

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“…Strengths of this study include its prospective study design, large sample size relative to previously published studies and inclusion of a wide variety of hip pathologies [ 6 , 7 ]. However, we acknowledge the following limitations.…”

Section: Discussionmentioning

confidence: 99%

“…Although measurement of the LCEA was initially established and validated using standard anteroposterior pelvic (AP) radiography, recent trends have favored its measurement on computed tomography (CT) [ 6–8 ]. The increasing popularity of CT is, in part, attributed to its improved accuracy for visualization of bony morphology and preoperative planning relative to other imaging modalities in patients undergoing hip surgery [ 7 , 9–11 ].…”

Section: Introductionmentioning

confidence: 99%

Measurement of lateral acetabular coverage: a comparison between CT and plain radiography

Chadayammuri

Garabekyan²,

Jesse

et al. 2015

J Hip Preserv Surg

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We prospectively evaluated the degree of absolute agreement between measurements of lateral center-edge angle (LCEA) on plain radiography (XR) and computed tomography (CT) in a consecutive cohort of 205 patients (410 hips) undergoing hip arthroscopy. Preoperative measurements of the LCEA were performed bilaterally utilizing standardized anteroposterior radiographs and coronal reformatted CT scans. Demographic variables including age, gender, height, weight, BMI and clinical diagnosis were recorded for all patients. Overall, measured values of the LCEA were 2.1° larger on CT compared with XR (32.9° versus 30.8°, P < 0.001). Subgroup analysis revealed the highest mean difference in hips with acetabular dysplasia and concomitant cam-type femoroacetabular impingement (FAI) [mean difference (CT–XR) 5.5°, 95% confidence interval (CI) 3.7°–7.3°, P = 0.011], followed by hips with isolated acetabular dysplasia (mean difference [CT–XR] 4.9°, 95% CI 2.7°–7.0°, P < 0.001). In contrast, 119 (29.0%) of the hips demonstrated larger measurements of the LCEA on 25 XR relative to CT. Of these hips, 20 (16.8%) had pincer-FAI and 25 had cam-FAI (21.0%), representing a significantly higher proportion compared with all other clinical subgroups (P = 0.045 and 0.036, respectively). Our study demonstrates measured values of the LCEA are consistently inflated on CT relative to XR for a wide variety of hip pathologies, highlighting the need for standardization and validation of CT-based measurements to improve the quality of clinical decision making.Level of Evidence: Diagnostic Level II.

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“…Greater alpha angles are associated with athletic‐related groin pain, chondral defects, and cam decompression . The most common threshold is 55° . The beta angle of Beaule is clinically used to determine posterior impingement, which is an indication for surgery.…”

Section: Introductionmentioning

confidence: 99%

“…Acetabular dysplasia (AD) affects both sides of the joint and refers specifically to an acetabulum that is either shallow or underdeveloped. Previous studies have compared radiographic and CT imaging for select parameters of FAI and AD but have not comprehensively investigated the intermodality, interrater, and intrarater consistencies of lateral center edge, Tonnis, alpha, and beta angles in prearthritic hips. The primary objective of this study was to determine whether radiographs with an AP pelvis view and 45° Dunn lateral view reliably correlate with CT in the context of lateral center edge, Tonnis, alpha, and beta angle measurements for the diagnosis of FAI or AD.…”

Section: Introductionmentioning

confidence: 99%

Correlation of Measurements of the Prearthritic Hip Between Plain Radiography and Computed Tomography

Air

Harrison

Nguyen

et al. 2019

PM&R

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Inter- and intra-observer agreement of femoroacetabular impingement (FAI) parameters comparing plain radiographs and advanced, 3D computed tomographic (CT)-generated hip models in a surgical patient cohort

Abstract: III.

Cited by 24 publications

References 21 publications

Surgical treatment of femoroacetabular impingement following slipped capital femoral epiphysis

Surgical treatment of femoroacetabular impingement following slipped capital femoral epiphysis

Measurement of lateral acetabular coverage: a comparison between CT and plain radiography

Correlation of Measurements of the Prearthritic Hip Between Plain Radiography and Computed Tomography

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