The methodology of proximal femoral geometry measurement - a comparative study
Date Issued
2008
Date
2008
Author(s)
Chou, Po-Yen
Abstract
Topic 1: Measurement of canine femoral neck anteversion: a comparison of 3 methods under three-dimensional computed tomographyarious methods measuring canine femoral neck anteversion have been proposed in literatures. In this article, 3 conventional methods under computed tomography simulation were evaluated. 18 client-owned dogs, including 8 Golden retrievers and 10 Labrador retrievers clinically and radiologically free of orthopedic diseases were examined. 16-slices computed tomographic images were obtained from all dogs and analyzed on a desktop computer. Simulated anatomic, axial radiographic, and biplanar radiographic methods were used for the measurement of femoral anteversion. A total of 36 femurs were examined, the average femoral anteversion obtained by simulated anatomic, axial radiography and biplanar radiography methods were 24.00°±4.03°, 36.37°±5.23° and 32.52°±3.34°, respectively. No significant difference was detected within and between observers in each method. However, significant differences among different methods were found (p<0.05). The study suggested that the measurement of femoral neck anteversion using any of the conventional methods under three-dimensional computed tomography simulation is feasible in the dog. However, results from different methods must be interpretated cautiously.opic 2: The comparative study of 4 veterinary methods in the measurement of human femoral inclinationemoral inclination is clinically important for its relationship to the prognosis of various hip joint diseases. In the measurement of human inclination angle, subjective visual recognition of femoral neck and shaft axis was regularly used. The purpose of this study is to evaluate 4 methods developed in veterinary medicine in the measurement of human femoral inclination and to compare them with the conventional direct visual method. 15 volunteers were examined in this study. The subjects were all clinically and radiologically free of orthopedic diseases. Anterior-posterior radiographs were taken with the femur under 15° internal rotations. Femoral inclination was calculated using direct visual measurement and the result was compared with 4 techniques modified from veterinary studies. Intra-observer reliability was good in all 5 methods. The results of this study showned that the methods proposed in veterinary studies may be used in human clinical settings. However; each method has its inherited features and disadvantages, the selection of method still depends on the nature of patient conditions.
Subjects
femoral anteversion
computed tomography
dog
femoral inclination
human
radiology
SDGs
Type
thesis
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