Comparative validation of the radiographic and tomographic measurement of patellar height

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• 作者：Marco Antonio Schueda ; Diego Costa Astur ; Gustavo Gon莽alves Arliani ; Gilberto Hornburg ; Ricardo Serpa ; Walter Heinig Neto ; Camila Cohen Kaleka ; Mois茅s Cohen
• 关键词：Joint instability ; Patella ; Radiography ; Tomography
• 刊名：Revista Brasileira de Ortopedia (English Edition)
• 出版年：September-October, 2013
• 年：2013
• 卷：48
• 期：5
• 页码：397-401
• 全文大小：731 K

文摘

Objective

To evaluate and validate the radiographic measurement of patellar height with computerized tomography scans.

Methods

Measured the patellar height through the lateral radiographic image supported by one foot and sagittal tomographic view of the knee in extension, flexion of 20掳, and quadriceps contraction of 40 patients (80 knees), asymptomatic and no history of knee injuries using Insall-Salvati index. There were 20 adult females and 20 adult males.

Results

The height patellar index was higher in women of all images taken, in proportion. There was no statistical difference of patellar height index between the radiographics and tomographics images.

Conclusion

The Insall-Salvati index in females was higher in all cases evaluated. Furthermore, it is possible to measure the patellar height index during tomographic study without distorting the results obtained, using to define the presence of patella alta or patella baja.