No relationship between critical shoulder angle and glenoid erosion after shoulder hemiarthroplasty: a comparative radiographic study.

Autor: Cerciello, S., Morris, B., Visonà, E., Corona, K., Edwards, T., Maffulli, N., Walch, G., Morris, B J, Visonà, E, Edwards, T B
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Zdroj: Archives of Orthopaedic & Trauma Surgery; Jul2017, Vol. 137 Issue 7, p919-923, 5p, 1 Diagram, 2 Charts
Abstrakt: Introduction: Symptomatic glenoid erosion is one of the most common causes of functional impairment after shoulder hemiarthroplasty. A decrease in the critical shoulder angle (CSA) has been associated with the development of shoulder arthritis. The inter-observer reliability of the CSA and the relationship between CSA and symptomatic glenoid erosion after shoulder hemiarthroplasty were investigated.Materials and Methods: Twenty-eight patients with symptomatic glenoid erosion after anatomic hemiarthroplasty were compared to a control group of 30 patients with no signs of symptomatic glenoid erosion. The CSA was measured by two blinded shoulder surgeons at a mean follow-up of 105.2 and 54.7 months, respectively. The inter-observer reliability was calculated.Results: The mean CSA in the control group in neutral, internal, and external rotations was 34°, 33°, and 33°, respectively. The corresponding values in the study group were 33°, 33°, and 33° (<0.01). The interclass correlation coefficient between the two examiners was 0.917 (P < 0.01), 0.924 (P < 0.01), and 0.948 (P < 0.01), respectively. The Mann-Whitney test between the control group and the study group were, respectively, 0.907, 0.932, and 0.602.Conclusion: There were no significant differences of CSA values between the two groups. Good inter-observer reliability was found for the CSA method. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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