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The rotation of the humeral head does not alter radiographic evaluation of the head-shaft angle

Malavolta, Eduardo A., PhD ; Assunção, Jorge H., MD ; Pagotto, Raphaella A., MD ; Avelino, Rafael L., MD ; Gracitelli, Mauro E.C., MD ; Pereira, Cesar A.M., MSc ; Jacomo, Alfredo L., PhD ; Ferreira Neto, Arnaldo A., PhD

Journal of shoulder and elbow surgery, 2016-04, Vol.25 (4), p.543-547 [Periódico revisado por pares]

United States: Elsevier Inc

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Título:
The rotation of the humeral head does not alter radiographic evaluation of the head-shaft angle
Autor: Malavolta, Eduardo A., PhD ; Assunção, Jorge H., MD ; Pagotto, Raphaella A., MD ; Avelino, Rafael L., MD ; Gracitelli, Mauro E.C., MD ; Pereira, Cesar A.M., MSc ; Jacomo, Alfredo L., PhD ; Ferreira Neto, Arnaldo A., PhD
Assuntos: Adult ; Body Weights and Measures ; Cadaver ; Female ; Humans ; Humeral Head - diagnostic imaging ; humeral head retroversion ; humeral torsion ; Humerus - diagnostic imaging ; humerus morphology ; Male ; Observer Variation ; Orthopedics ; proximal humerus fracture ; Reproducibility of Results ; Rotation ; shoulder arthroplasty ; Shoulder morphology
É parte de: Journal of shoulder and elbow surgery, 2016-04, Vol.25 (4), p.543-547
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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Descrição: Background The head-shaft angle is used to plan osteotomies and arthroplasties and to assess the radiographic outcomes of surgical treatment for proximal humerus fractures. There are no published data showing whether different degrees of arm rotation interfere with the evaluation of this angle. Methods Eighteen humeri from adult cadavers were used. Radiographs were taken with the specimens initially placed in a true anteroposterior position and then subsequently positioned with internal and external rotations of 10°, 20°, and 30°. All radiographs were evaluated by 3 shoulder and elbow surgeons at 2 different times 3 months apart. The head-shaft angle was measured using a picture archiving and communication system. Results For the humerus in the neutral position, the head-shaft angle was 137° ± 4°. With the anatomic specimen positioned with increasing external and internal rotations, there was a maximum difference of 2° compared with the value observed in the neutral position, which was not a significant difference ( P = .911). Measurements of the head-shaft angle showed a good interobserver correlation coefficient, with a value of 0.788 (0.728-0.839) for all measurements. The intraobserver correlation coefficient ranged from moderate to excellent (0.536-0.938). Conclusion The head-shaft angle did not change significantly with varying degrees of humeral rotation. The interobserver correlation coefficient showed good reliability, and the intraobserver correlation was moderate to excellent.
Editor: United States: Elsevier Inc
Idioma: Inglês

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The rotation of the humeral head does not alter radiographic evaluation of the head-shaft angle

Malavolta, Eduardo A., PhD ; Assunção, Jorge H., MD ; Pagotto, Raphaella A., MD ; Avelino, Rafael L., MD ; Gracitelli, Mauro E.C., MD ; Pereira, Cesar A.M., MSc ; Jacomo, Alfredo L., PhD ; Ferreira Neto, Arnaldo A., PhD

United States: Elsevier Inc

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