Measuring Acetabular Version after Total Hip Arthroplasty: A Comparison of Two Radiographic Methods.
Revista brasileira de ortopedia(2021)
摘要
The objective of the present work was to compare the measurement of acetabular component version on anteroposterior (AP) and on cross-table radiographs after total hip arthroplasty (THA). Radiographs of 60 hips with a primary THA were selected. Version was calculated on the AP radiograph using the Lewinnek method and, on the cross-table, using the Woo and Morrey direct method. Mean and standard deviation (SD) were different on both radiographs, being 9.7° ± 5.5° on the AP, whereas in the cross-table the measurements were 20.6° ± 8.4° ( < 0.001). Minding our aim of 10°, the cross-table measurements were statistically different from it ( < 0.001), while the AP measurement did not differ ( = 0.716). The present study showed that the best way to correctly evaluate the acetabular component positioning following a THA is by measuring anteversion and abduction on an AP radiograph after confirming, in a cross-table radiograph, that the component is not retroverted.
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关键词
acetabulum,arthroplasty, replacement, hip,radiography
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