Anthropometry of the medial tibial plateau in the Chinese population: the morphometric analysis and adaptability with Ox
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Anthropometry of the medial tibial plateau in the Chinese population: the morphometric analysis and adaptability with Oxford Phase III tibial components Feifan Lu1 · Qidong Zhang2 · Pei Liu2 · Wanshou Guo1,2 Received: 10 July 2019 / Accepted: 28 October 2019 © European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2019
Abstract Purpose The objective of this study was to measure resected surfaces of the medial tibial plateau and to provide accurate anatomical parameters for the Chinese population and improve the unicompartmental knee arthroplasty (UKA) component design in the future. Methods This study measured different dimensions of the medial tibial plateau on MRIs of 1000 consecutive healthy Chinese people without knee deformity. The anteroposterior (AP) dimension and mediolateral dimensions at defined points (recorded as WA, WB, WC) of the medial tibial plateau were measured. The aspect ratio (WB/AP, recorded as AR) was also recorded. The measured results were grouped to compare with the dimensions of the Oxford Phase III tibial component. An independent t test was used to compare the differences between the males and females. Results The Oxford Phase III tibial component showed mediolateral overhang or undersize for the whole range of measured anteroposterior dimensions of the resected medial tibial plateau. A total of 71.3% patients’ resected surface did not match the Oxford Phase III tibial component well. The study also found a decrease in the aspect ratio (WB/AP) with an increase in the AP dimension in the medial tibial plateau. Conclusions There is a difference between the morphology of the Chinese knee joint and the configuration of the Oxford Phase III tibial components. The results of this study provided accurate anatomical parameters for Chinese and guidelines for designing UKA components suitable for the Chinese population. Level of evidence Retrospective comparative study, Level III. Keywords Anthropometry · Tibial plateau · Oxford Phase III UKA tibial components · Chinese population
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00167-019-05777-9) contains supplementary material, which is available to authorized users. * Wanshou Guo [email protected] Feifan Lu [email protected] Qidong Zhang [email protected] Pei Liu [email protected] 1
China‑Japan Friendship School of Clinical Medicine, Peking University, 100029 Beijing, China
Department of Orthopedic Surgery, Beijing Key Lab Immune‑Mediated Inflammatory Diseases, China-Japan Friendship Hospital, 100029 Beijing, China
2
Introduction Unicompartmental knee arthroplasty (UKA) is an effective method for the treatment of advanced knee osteoarthritis and has received increasing application. The adaptability between the tibial component and the articular resected surface is an important factor affecting the success rate of UKA [10, 14, 16, 19]. However, most of the UKAs currently used in China are produced to fit the physique of Caucasians and man
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