Michael Hachadorian, Mihir Sheth, Ermyas Kahsai, Anastasia Whitson, Corey Schiffman, Frederick Matsen, Jason Hsu
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引用次数: 0
Abstract
Purpose: In shoulder arthroplasty, three-dimensional computed tomography (3D CT) has become the gold standard for preoperative version assessment. Meanwhile, postoperative version is usually evaluated using radiographs (XR), in particular an axillary view, in which the view of the scapular body is often truncated, preventing the scapular plane from being used as a reference. This study introduces the posterolateral acromion-to-coracoid (PLAC) line, which can be assessed on a standard truncated axillary radiograph.
Materials and methods: Forty-six shoulders were studied. Four angles were measured including 3D CT (CT Version), 3D CT PLAC line to glenoid face angle (CT PLAC-GFA), 2) radiographic PLAC line to glenoid face angle (XR PLAC-GFA), and 3) the radiographic glenoid vault line to glenoid face angle (XR GV-GFA). Variation and linear relationship between these angles were calculated.
Results: The mean difference between CT PLAC-GFA and XR PLAC-GFA was 1.0º (95% CI -0.7 to 2.8)(IQR = 8.5º, -3.0º to 5.4º), with a strong correlation on linear regression (R2 = 0.76, p < 0.001). XR PLAC-GFA and XR GV-GFA demonstrated strong correlations with CT measured version (R2 = 0.72 and 0.70, respectively; p < 0.001). Inter-rater reliability was excellent for all metrics (ICC ≥ 0.93).
Conclusions: The PLAC and the glenoid vault lines are highly reproducible references on truncated axillary views. These alternative reference lines allow accurate comparison of preoperative and postoperative glenoid orientation using standard axillary radiographs.
期刊介绍：
International Orthopaedics, the Official Journal of the Société Internationale de Chirurgie Orthopédique et de Traumatologie (SICOT) , publishes original papers from all over the world. The articles deal with clinical orthopaedic surgery or basic research directly connected with orthopaedic surgery. International Orthopaedics will also link all the members of SICOT by means of an insert that will be concerned with SICOT matters.
Finally, it is expected that news and information regarding all aspects of orthopaedic surgery, including meetings, panels, instructional courses, etc. will be brought to the attention of the readers.
Manuscripts submitted for publication must contain a statement to the effect that all human studies have been approved by the appropriate ethics committee and have therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki. It should also be stated clearly in the text that all persons gave their informed consent prior to their inclusion in the study. Details that might disclose the identity of the subjects under study should be omitted.
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The editors reserve the right to reject manuscripts that do not comply with the above-mentioned requirements. The author will be held responsible for false statements or for failure to fulfil the above-mentioned requirements.
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