Hill–Sachs lesion measurement with tridimensional models in anterior shoulder instability

• Autor(a) principal: Miyazaki,Alberto Naoki
• Data de Publicação: 2018
• Outros Autores: Silva,Luciana Andrade, Santos,Pedro Doneux, Sella,Guilherme do Val, Nagaya,Leonardo Hideto, Checchia,Sergio Luiz
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista Brasileira de Ortopedia (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-36162018000300357
• topic: Shoulder dislocation; Shoulder joint; Joint instability; Printing, three-dimensional printing; X-ray computed tomography

ABSTRACT Objective To evaluate the reproducibility and repeatability of Hill–Sachs lesion measurement from computed tomography images, with computer software and tridimensional prototype. Methods 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. Results 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). Conclusion There was no reproducibility and repeatability for Hill–Sachs lesion measurement between plaster models and software models.