ArticleThe archives of bone and joint surgery2024
Internal Rotation Measurements: Correlation between Vertebral Body Level and Goniometer Measurements on Functional Outcome Scores.
Article in The archives of bone and joint surgery, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- The effect of Area Deprivation Index on clinical outcomes after total shoulder arthroplasty.Journal of shoulder and elbow arthroplasty · 2026Article
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Authors and funding
6 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Objectives: Reverse total shoulder arthroplasty (rTSA) has shown success in the treatment of end-stage glenohumeral pathology. However, one major shortcoming has been the lack of internal rotation (IR), which can have significant functional consequences. Much research has been conducted to maximize IR after rTSA, but the literature is unclear which measurement of IR represents the "gold standard" between vertebral level and goniometer-based measurements. Methods: Patients were prospectively enrolled into one of three groups: postoperative from rTSA, subacromial pain (SA), and normal. IR measurements were obtained either by the vertebral body level, by which radiographic markers indicated the highest level that the patient was able to reach on the body midline; or by using a goniometer while the shoulder was in 90-degree abduction as the patient stood upright. Results: Comparisons between the radiographic vertebral level and goniometer IR measurements showed significant correlations within the normal (r = - 0.43, P = 0.02) and SA pain groups (r = - 0.44, P = 0.02). The rTSA group did not quite reach statistical significance (P = 0.11), but had a moderate correlation coefficient (r = - 0.33). Accuracy of visual IR measurements was also significant. All rTSA group vertebral level measurements were within two vertebral levels, while only 84.6% of IR measurements by goniometer were within 15 degrees. Visual vertebral level measurements were found to be more accurate for the SA pain group (86.2 vs 66.7%). Conclusion: A comparison of the two primary IR measurement methods for shoulders was shown to have a correlation. This would allow for direct comparison of different literature using only one measurement method. While the correlation is not yet strong enough to allow for conversion between the two measurement types, creating a matched cohort taking into account other factors may lead to the correlation reaching this point.
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