Is radiograph glenopolar angle accurate for extraarticular scapular neck fractures?
| Autor: | Tarun Ahuja, Thin Hong, Ritwik Kejriwal |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
musculoskeletal diseases
medicine.medical_specialty Glenopolar angle Glenoid Cavity Intra-Articular Fractures Scapular spine Radiography Guidelines as Topic macromolecular substances Fractures Bone 03 medical and health sciences Imaging Three-Dimensional 0302 clinical medicine stomatognathic system Scapula Humans Medicine 030212 general & internal medicine Acromion Retrospective Studies General Environmental Science Orthodontics 030222 orthopedics Shoulder Fracture business.industry Reproducibility of Results musculoskeletal system medicine.anatomical_structure Scapular neck General Earth and Planetary Sciences Plain radiographs Radiology Tomography X-Ray Computed business New Zealand |
| Zdroj: | Injury. 47:2772-2776 |
| ISSN: | 0020-1383 |
| DOI: | 10.1016/j.injury.2016.10.001 |
| Popis: | Background Plain radiographs still play a role in management of extraarticular scapular neck fractures. Glenopolar angle (GPA) is one of the radiograph measurements that is used to determine the necessity for surgery. Our aim was to establish reliability of GPA on plain radiograph in patients with extraarticular scapular neck fractures. Methods We performed a multicentre retrospective study including all patients with extraarticular scapular neck fractures with available imaging between 2006 and 2012. We excluded intra-articular glenoid fractures, scapular blade fractures, acromion fractures, and scapular spine fractures. We compared GPA on plain radiograph with three dimensional computed tomography (3D CT) measurement, as well as contribution of radiograph rotational error, glenoid inclination, and medial shortening of glenoid fragment towards GPA measurement. Results One hundred patients met the inclusion criteria. The mean difference between the GPA measurements on radiographs and 3D CT was 6.1 ± 0.85° (95% confidence interval) as an absolute value. In terms of contribution to GPA values, GPA changed by one degree with ten degrees of radiograph rotational error, three degrees of glenoid inclination, and three millimetres of glenoid fragment medial shortening. Conclusion Plain radiograph can provide a clinician with a reasonable estimation of the GPA. Glenoid inclination has a greater influence on GPA compared to medial shortening. |
| Databáze: | OpenAIRE |
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