Kumar Praganesh, Gupta Anil Kumar
Department of Orthopedics, GSVM Medical College, Kanpur, 208002 India.
Indian J Orthop. 2022 May 7;56(9):1547-1553. doi: 10.1007/s43465-022-00647-y. eCollection 2022 Sep.
Recreation of near normal posterior tibial slope is required for proper knee biomechanics after unicondylar as well as total knee arthroplasties. It is also required for proper functioning of anterior cruciate ligament after high tibial osteotomies. Researchers have found differences in values of posterior tibial slopes in individuals of different ethnicities. So far there is no study measuring the posterior slopes of medial and lateral tibial plateau separately in knees of healthy Indian population via three dimensional imaging modalities like computed tomography.
The aim of our study is to find out the slopes of medial and lateral tibial plateau separately through computed tomography (CT) scans.
CT-based measurements of posterior tibial slopes were done in 62 healthy knees. There were 55 males and 7 females.
Age groups were in the range of 17-45 years. Mean values of Posterior tibial slope of medial and lateral tibial plateau for combined sample were 8.60° ± 3.51° and 7.94° ± 3.91°. Mean values of medial and lateral tibial plateau for males were 8.33° ± 3.51° and 7.71° ± 4.07° respectively; while for females were 10.69° ± 2.86° and 9.77° ± 1.32°, respectively.In our study, there was a large range of slopes, extending from + 0.6° to 15.6° for medial tibial slope, from 0° to 15° for lateral tibial slope.
The minimum values of Medial tibial plateau slope are very low as compared to the previous study done in Asian population. Further CT based studies are required to measure values of posterior tibial slope for larger sample from Indian population. The implant design suitable and their implantation guidelines for western population may not be appropriate for Indian population.
单髁膝关节置换术和全膝关节置换术后，为实现正常的膝关节生物力学，需要重建接近正常的胫骨后倾角度。高位胫骨截骨术后，为使前交叉韧带正常发挥功能，同样需要重建该角度。研究人员发现，不同种族个体的胫骨后倾角度值存在差异。迄今为止，尚无研究通过计算机断层扫描等三维成像方式，分别测量健康印度人群膝关节内侧和外侧胫骨平台的后倾角度。
本研究旨在通过计算机断层扫描（CT）分别测量内侧和外侧胫骨平台的倾斜角度。
对62例健康膝关节进行基于CT的胫骨后倾角度测量。其中男性55例，女性7例。
年龄范围为17至45岁。联合样本中，内侧和外侧胫骨平台的胫骨后倾平均角度分别为8.60°±3.51°和7.94°±3.91°。男性内侧和外侧胫骨平台的平均角度分别为8.33°±3.51°和7.71°±4.07°；女性分别为10.69°±2.86°和9.77°±1.32°。在本研究中，倾斜角度范围较大，内侧胫骨倾斜角度从+0.6°至15.6°，外侧胫骨倾斜角度从0°至15°。
与此前针对亚洲人群的研究相比，本研究中内侧胫骨平台倾斜角度的最小值非常低。需要进一步开展基于CT的研究，以测量更多印度人群样本的胫骨后倾角度值。适用于西方人群的植入物设计及其植入指南可能不适用于印度人群。
