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Revista Brasileira de Ortopedia

versão impressa ISSN 0102-3616versão On-line ISSN 1982-4378


MIYAZAKI, Alberto Naoki et al. Hill–Sachs lesion measurement with tridimensional models in anterior shoulder instability. Rev. bras. ortop. [online]. 2018, vol.53, n.3, pp.357-363. ISSN 0102-3616.


To evaluate the reproducibility and repeatability of Hill–Sachs lesion measurement from computed tomography images, with computer software and tridimensional prototype.


Three-dimensional models were made from computed tomography images from 14 patients with anterior shoulder instability, using InVesalius 3.0® software. Hill–Sachs lesions were measured with Rhinocerus 5.0® software with pre-determined position. Mid-lateral distance, perpendicular to humeral shaft, cranial-caudal distance, parallel to humeral shaft, and the longitudinal distance of the lesion were measured. Using the Printer-ZP 310 three-dimensional printer, plaster models were made. To measure the Hill–Sachs lesion, a calibrated universal digital caliper was used in the same way as the software.


There was intra-observer and inter-observer variability for measurement of the same model. Observers did not perform the measurements in a similar way, showing difficulty to use the method (p < 0.05). Using the software to measure the mid-lateral distance, as well as in the measurement with the caliper, the model type influenced the measurements for each of the observers, rendering the method invalid (p < 0.05).


There was no reproducibility and repeatability for Hill–Sachs lesion measurement between plaster models and software models.

Palavras-chave : Shoulder dislocation; Shoulder joint; Joint instability; Printing, three-dimensional printing; X-ray computed tomography.

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