Objective To evaluate the effectiveness of reverse reconstruction of knee prosthesis using image method, by comparing the morphological parameters of bilateral knee joints. Methods This experiment designed a personalized prostheses insteading of defect data by matching and analyzing the morphological similarity of the bilateral knee joint. The experiment harvested 18 cases of bilateral tibias and 69 cases of bilateral femurs. Carried out three-dimensional reconstruction, calculated the volume and area of the bilateral knee joints, and then evaluated the difference of the morphological data of the bilateral knee joints. Results The results of deviation analysis showed that more than 85% regional differences were less than 1mm, and bilateral knee joints were highly similar. Before the optimization with geomagic, there was no significant difference between the bilateral femurs (P=0.197) and the tibias (P=0.798) in area. And the deviation interval of femur was 0.3427±0.9956 mm and tibia was 0.4165±1.0714 mm. Conclusions The analysis shows that there is a high similarity in the area of the knee joint surface. Areas with large differences are mainly distributed at the metaphysis. The mirror model of intact distal femur surface can be used to design personalize prosthesis.
XIE Yu-shan, LIN Ze-yu, XIE Pu-sheng, HUANG Wen-hua
. Discussion on the method of reverse engineering knee prosthesis with mirror data and the analysis of the matching degree[J]. Chinese Journal of Clinical Anatomy, 2020
, 38(3)
: 314
-320
.
DOI: 10.13418/j.issn.1001-165x.2020.03.014
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