The acromiohumeral centre edge angle: A new radiographic measurement and its association with rotator cuff pathology

We report a case of Klippel-Trenaunay-Weber syndrome in a 31-year-old woman who presented with hypertrophy of the left leg. She had severe osteoarthritic changes in the left hip joint secondary to the lack of acetabular coverage of the femoral head as the result of lateral inclination of the pelvis owing to leg-length discrepancy of 4 cm. The centre-edge angle (coverage ratio of the acetabulum to the femoral head) was improved from 15° to 33° after a foot lift. She underwent osteotomy and lengthening of the normal contralateral tibia using a Taylor spatial frame. Hip arthroplasty could be avoided as osteoarthritic changes of the hip joint had improved.

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Correlation between full-thickness degenerative supraspinatus tear and radiographic parameters including the acromiohumeral centre edge angle and the greater tuberosity angle

BMC Musculoskeletal Disorders ◽

10.1186/s12891-021-04489-x ◽

2021 ◽

Vol 22 (1) ◽

Author(s):

Chaiyanun Vijittrakarnrung ◽

Praman Fuangfa ◽

Suphaneewan Jaovisidha ◽

Chusak Kijkunasathian

Keyword(s):

Regression Analysis ◽

Multivariate Regression ◽

Multivariate Regression Analysis ◽

Control Group ◽

Full Thickness ◽

Greater Tuberosity ◽

Edge Angle ◽

Centre Edge Angle ◽

Radiographic Parameters ◽

Supraspinatus Tear

Abstract Background Many radiographic parameters associated with the extrinsic cause of supraspinatus tears have been proposed. The aim of this study was to assess the relationship between a full-thickness degenerative supraspinatus tear (FTDST) and the patient’s radiographic parameters, including the acromiohumeral centre edge angle (ACEA) and the greater tuberosity angle (GTA). Methods A retrospective study was conducted. We included 116 patients who underwent shoulder arthroscopic surgery at our institute. The case group included FTDST patients, whereas the control group also included patients without evidence of supraspinatus tears. In each patient, the ACEA and GTA values were measured and analyzed by two independent observers. Intra- and interobserver reliabilities were assessed. Multivariate regression analysis was performed. Results The ACEA values were significantly increased in the FTDST group with a mean of 26.44° ± 9.83° compared with 16.81° ± 7.72° in the control group (P < 0.001). Multivariate regression analysis also showed that higher ACEA values were associated with an FTDST (odds ratio 1.16 per degree, P = 0.01). For GTA values, a statistically significant difference was found with a mean of 70.92° ± 6.64 compared with 67.84° ± 5.56 in the control group (P = 0.02). However, stepwise regression analysis did not indicate that GTA was a predictor of FTDST. Conclusions Our study demonstrated that the presence of increased ACEA values is an independent significant risk factor for the presence of FTDSTs. Consequently, GTA values may be less helpful in assessing the risk of FTDST, especially in this specific population.

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Do Acromiohumeral Centre Edge Angle and Greater Tuberosity Angle Correlate With the Full-Thickness Degenerative Supraspinatus Tear?

10.21203/rs.3.rs-156307/v1 ◽

2021 ◽

Author(s):

Chaiyanun Vijittrakarnrung ◽

Praman Fuangfa ◽

Suphaneewan Jaovisidha ◽

Chusak Kijkunasathian

Keyword(s):

Regression Analysis ◽

Multivariate Regression ◽

Multivariate Regression Analysis ◽

Control Group ◽

Full Thickness ◽

Greater Tuberosity ◽

Edge Angle ◽

Centre Edge Angle ◽

Radiographic Parameters ◽

Supraspinatus Tear

Abstract Background: Many radiographic parameters associated with the extrinsic cause of supraspinatus tear have been proposed. The aim of this study was to correlate the relationship between full-thickness degenerative supraspinatus tear (FTDST) and the patient’s radiographic parameters, including the acromiohumeral centre edge angle (ACEA) and the greater tuberosity angle (GTA).Methods: A retrospective study was conducted. We included 116 patients who had undergone shoulder arthroscopic surgery at our institute. The case group included FTDST patients, while the control group also included patients without evidence of supraspinatus tear. In each patient, the ACEA and GTA values were measured and analysed by two independent observers. Intra-inter observer reliability was assessed. Multivariate regression analysis was performed.Results: The ACEA values were significantly higher in FTDST, with a mean of 26.44°± 9.83° compared with 16.81° ± 7.72° in the control group (P < 0.001). Multivariate regression analysis also showed that higher ACEA values were associated with a FTDST (odds ratio 1.16 per degree, P = 0.01). Meanwhile, for GTA values, a statistically significant difference was found with a mean of 70.92° ± 6.64 compared with 67.84° ± 5.56 in the control group (P = 0.02). However, Stepwise regression analysis rejected GTA as a predictor for FTDST.Conclusions: Our study demonstrated that the presence of higher ACEA values is an independent significant risk factor for the presence of FTDST. Consequently, GTA values may be less helpful in assessing the risk of FTDST, especially in this specific population.

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THE CENTRE-EDGE ANGLE OF WIBERG IN THE ADULT INDIAN POPULATION

Journal of Bone and Joint Surgery - British Volume ◽

10.1302/0301-620x.78b2.0780320 ◽

1996 ◽

Vol 78-B (2) ◽

pp. 320-321 ◽

Cited By ~ 5

Author(s):

S. Mandal ◽

S. Bhan

Keyword(s):

Indian Population ◽

Edge Angle ◽

Centre Edge Angle

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Transpositional Periacetabular Osteotomy with Allografting in Patients with Severe Dysplasia: Mid-Term Results

Hip International ◽

10.5301/hipint.5000417 ◽

2016 ◽

Vol 27 (1) ◽

pp. 35-41 ◽

Cited By ~ 2

Author(s):

Motoki Sonohata ◽

Yutaka Yonekura ◽

Masaru Kitajima ◽

Syunsuke Kawano ◽

Masaaki Mawatari

Keyword(s):

Acetabular Dysplasia ◽

Periacetabular Osteotomy ◽

Clinical Results ◽

Harris Hip Score ◽

Acetabular Roof ◽

Allogenic Bone ◽

Edge Angle ◽

Centre Edge Angle ◽

Acetabular Head Index

Aim The purpose of this study was to analyse the extent of surgical correction and the early clinical results obtained using periacetabular osteotomy with allogenic bone grafting in patients with severe acetabular dysplasia. Methods 44 hips in 38 patients were confirmed to have severe acetabular dysplasia and underwent this procedure. The mean follow-up period was 4.2 (range 1.5-8.2) years. Severe acetabular dysplasia was defined as a centre-edge angle less than 0°, an acetabular-head index less than 50% and an acetabular roof obliquity greater than 30°. Periacetabular osteotomy was performed with transpositional osteotomy of the acetabulum. The patients were divided into 2 groups according to the radiographic appearance: 34 hips in the early stage group and 10 hips in the advanced stage group. Postoperatively, the hips were radiographically assessed for dysplasia correction. The clinical results and hip function were measured using the Harris Hip Score. Results The average pre-operative Harris Hip Score improved from 70 to 91 points at the latest follow-up. The average centre-edge angle, acetabular-head index and acetabular roof obliquity improved from −9° to 36°, 41% to 91% and 31° to 2°, respectively. Continuity of the Shenton line improved from 15 to 35 hips. No instances of nonunion or of transported segment collapse were encountered in this series; however, a grafted allogenic bone was absorbed in 1 case. Conclusions The usage of allogenic bone grafting combined with periacetabular osteotomy is an effective technique for treating severe acetabular dysplasia. In this series, the early clinical and radiographic results were excellent.

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Do acetabular parameters measured on 2D imaging correlate with CT, and can lateral centre-edge angle predict femoral head coverage?

Bone & Joint Open ◽

10.1302/2633-1462.31.bjo-2021-0130.r1 ◽

2022 ◽

Vol 3 (1) ◽

pp. 12-19

Author(s):

Saif Salih ◽

George Grammatopoulos ◽

Sophia Burns ◽

Margaret Hall-Craggs ◽

Johan Witt

Keyword(s):

Femoral Head ◽

Linear Regression ◽

Hip Pain ◽

3D Analysis ◽

3D Ct ◽

Edge Angle ◽

Centre Edge Angle ◽

Ct Measurements ◽

Lateral Centre Edge Angle ◽

The Relationship

Aims The lateral centre-edge angle (LCEA) is a plain radiological measure of superolateral cover of the femoral head. This study aims to establish the correlation between 2D radiological and 3D CT measurements of acetabular morphology, and to describe the relationship between LCEA and femoral head cover (FHC). Methods This retrospective study included 353 periacetabular osteotomies (PAOs) performed between January 2014 and December 2017. Overall, 97 hips in 75 patients had 3D analysis by Clinical Graphics, giving measurements for LCEA, acetabular index (AI), and FHC. Roentgenographical LCEA, AI, posterior wall index (PWI), and anterior wall index (AWI) were measured from supine AP pelvis radiographs. The correlation between CT and roentgenographical measurements was calculated. Sequential multiple linear regression was performed to determine the relationship between roentgenographical measurements and CT FHC. Results CT-measured LCEA and AI correlated strongly with roentgenographical LCEA ( r = 0.92; p < 0.001) and AI ( r = 0.83; p < 0.001). Radiological LCEA correlated very strongly with CT FHC ( r = 0.92; p < 0.001). The sum of AWI and PWI also correlated strongly with CTFHC ( r = 0.73; p < 0.001). CT measurements of LCEA and AI were 3.4° less and 2.3° greater than radiological LCEA and AI measures. There was a linear relation between radiological LCEA and CT FHC. The linear regression model statistically significantly predicted FHC from LCEA, F(1,96) = 545.1 (p < 0.001), adjusted R2 = 85.0%, with the prediction equation: CT FHC(%) = 42.1 + 0.77(XRLCEA) Conclusion CT and roentgenographical measurement of acetabular parameters are comparable. Currently, a radiological LCEA greater than 25° is considered normal. This study demonstrates that those with hip pain and normal radiological acetabular parameters may still have deficiencies in FHC. More sophisticated imaging techniques such as 3D CT should be considered for those with hip pain to identify deficiencies in FHC. Cite this article: Bone Jt Open 2022;3(1):12–19.

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