Comparative analysis of 2 glenoid version measurement methods in variable axial slices on 3-dimensionally reconstructed computed tomography scans

Cunningham, Grégory; Freebody, John; Smith, Margaret M.; Taha, Mohy E.; Young, Allan; Cass, Benjamin; Giuffrè, Bruno

doi:10.1016/j.jse.2018.03.016

Cited by 11 publications

(10 citation statements)

References 30 publications

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“…e Friedman method we used is known to be correlated with other current measurement methods [6,30]. e Friedman and the more recent vault methods present similar results in measuring the version at the middle and lower glenoid; however, the vault method is less reliable and displays more variability [13]. Our second limitation was the age range of 18-60 years.…”

Section: Discussionmentioning

confidence: 96%

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Assessment of the Glenoid Morphology Based on Demographic Data in the Turkish Population

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Dinçel

Günaydın

et al. 2020

BioMed Research International

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is properly cited.Purpose. In this study, our aim was to evaluate the glenoid version, height, and width measurements based on gender, side, age, height, and hand dominance in the Turkish population using computed tomography (CT) images. Methods. In our study, CT images of 140 patients (62 females and 78 males; mean age: 39.6 years) who had no shoulder complaints were evaluated retrospectively. Glenoid version (GV), AP diameter (width), and SI diameter (height) on both shoulders were measured on the CT images. Correlations between patient gender, side, age, height, and hand dominance and the GV and size were evaluated. Results. e right shoulder had a mean GV of − 0.93 ± 7.80 degrees and the left shoulder had a GV of − 0.88 ± 6.63 degrees (p > 0.05). e mean AP diameter of the glenoid was 26.57 ± 3.02 mm in the right shoulder and 26.33 ± 3.01 mm in the left shoulder (p > 0.05). e mean SI diameter of the glenoid was 31.8 ± 3.6 mm in the right and 31.7 ± 3.3 mm in the left shoulder (p > 0.05). When men and women were evaluated in two separate groups, the GV, AP, and SI values did not exhibit a statistically significant difference between the two shoulders in both genders (p > 0.05). ere was a positive correlation between the ages and heights of the patients and the glenoid size (p < 0.05). e mean AP diameter was approximately 28 mm and the SI diameter was 34 mm in males, whereas the mean AP diameter was 24 mm and the SI diameter was 30 mm in females (p < 0.05). e GV values of the dominant shoulders were significantly more retroverted (p < 0.05). ere was a positive correlation between the ages and heights of the patients and the glenoid size (p < 0.05). Conclusion. Hand dominance had an effect on the glenoid version, while patient gender, age, and height had an effect on the glenoid size. e glenoid width in the Turkish population was similar to that of the European and American populations, and the glenoid height was similar to that of the Asian population. Our GV values were similar to those of the Asian population and more anteverted compared to the Western population. We believe that our findings will be useful in preoperative planning and in the production of implants for our population.

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Section: Discussionmentioning

confidence: 96%

“…Understanding of the glenoid anatomy is still ongoing in our day [6,7,12,13]. Studies have shown that the GV and size vary among different ethnic groups [1,5,10,14,15].…”

Section: Discussionmentioning

confidence: 99%

Assessment of the Glenoid Morphology Based on Demographic Data in the Turkish Population

Sari

Dinçel

Günaydın

et al. 2020

BioMed Research International

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“…A recent comparison of the glenoid vault method and the traditional measurement by the Friedman line method was performed by Cunningham et al 19 This comparison was carried out with 3D CT scans in a database of patients with varying diagnoses including OA. The scapulas were oriented using the 3D reconstruction and then version measurements were taken with the scapulas reoriented in 5 different angles with respect to the coronal plane.…”

Section: Discussionmentioning

confidence: 99%

Magnetic Resonance Imaging Correlates With Computed Tomography for Glenoid Version Calculation Despite Lack of Visibility of Medial Scapula

Parada

Shaw

Antosh

et al. 2020

Arthroscopy: The Journal of Arthroscopic & Related Surgery

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“…Version may be measured in different parts of the glenoid and varies with the superior-inferior position of the selected axial glenoid slices. 5 , 15 , 21 , 35 Measurements of glenoid version on the same axial cross-sectional images are unlikely to be different whether the entire scapula or only a portion of the scapular is imaged when using our Robertson method whether or not there is pathology of the glenohumeral joint, but this may not be the case if there is pathology of the scapula body such as a fracture. Measure of glenoid version using the Friedman method is similar on both CT scans and MRI.…”

Section: Discussionmentioning

confidence: 99%

Glenoid Version Assessment When the CT Field of View Does Not Permit the Friedman Method: The Robertson Method

Robertson

Sharma

McMahon

et al. 2022

Orthopaedic Journal of Sports Medicine

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Background: To improve spatial resolution, current clinical shoulder cross-sectional imaging studies reduce the field of view of the shoulder, excluding the medial scapula border and preventing glenoid version measurement according to the Friedman method. Purpose: To evaluate a method to accurately and reliably measure glenoid version on cross-sectional shoulder images when the medial scapula border is not included in the field of view, and to establish measurements equivalent to the Friedman method. Study Design: Controlled laboratory study. Methods: Sixty-five scapulae underwent computed tomography (CT) scanning with an optimal shoulder CT-positioning protocol. Glenoid version was measured on CT images of the full scapula using the Friedman method. We developed a measurement method (named the Robertson method) based on the glenoid vault version from partial scapula images, with a correction angle subtracted from the articular-surface-glenoid vault measurement. Comparison with the Friedman method defined the accuracy of the Robertson method. Three observers tested inter- and intraobserver reliability of the Robertson method. Accuracy was statistically evaluated with t tests and reliability with the intraclass correlation coefficient (ICC). Results: The statistical distribution of glenoid version was similar to published data,–0.5° ± 3° [mean ± SD]. The initial measurement using the Robertson method resulted in a more retroverted angle compared with the Friedman method, and a correction angle of 7° was then applied. After this adjustment, the difference between the 2 methods was nonsignificant (0.1° ± 4°; P > .65). Reliability of the Robertson method was excellent, as the interrater ICC was 0.77, the standard error of measurement (SEM) was 1.1° with P < .001. The intrarater ICC ranged between 0.84 and 0.92, the SEM ranged between 0.9° and 1.2° with P < .01. Conclusion: A validated glenoid version measurement method is now available for current clinical shoulder CT protocols that reliably create Friedman-equivalent values. Clinical Relevance: Friedman-equivalent values may be made from common clinical CTs of the shoulder and compared with prior and future Friedman measurements of the scapula.

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Comparative analysis of 2 glenoid version measurement methods in variable axial slices on 3-dimensionally reconstructed computed tomography scans

Cited by 11 publications

References 30 publications

Assessment of the Glenoid Morphology Based on Demographic Data in the Turkish Population

Assessment of the Glenoid Morphology Based on Demographic Data in the Turkish Population

Magnetic Resonance Imaging Correlates With Computed Tomography for Glenoid Version Calculation Despite Lack of Visibility of Medial Scapula

Glenoid Version Assessment When the CT Field of View Does Not Permit the Friedman Method: The Robertson Method

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