Endo Yusuke, Takemura Masahiro, Monma Masahiko, Mutsuzaki Hirotaka, Mizukami Masafumi
Doctoral Program in Health Sciences, Graduate School of Health Sciences, Ibaraki Prefectural University of Health Sciences, Japan.
Department of Physical Therapy, Faculty of Health Science, Health Science University, Japan.
Asia Pac J Sports Med Arthrosc Rehabil Technol. 2020 Nov 17;23:8-12. doi: 10.1016/j.asmart.2020.09.002. eCollection 2021 Jan.
BACKGROUND/OBJECTIVE: Anterior cruciate ligament injuries are prone to re-injury, and it is crucial to prevent the primary injury. One of the anatomical risk factors for anterior cruciate ligament injury is the posterior tibial slope angle. Investigating the characteristics of healthy individuals with respect to the posterior tibial slope angle is important to elucidate the risk of developing anterior cruciate ligament injuries. The purpose of this study was to determine the characteristics related to sex and of the posterior tibial slope angle in healthy Japanese subjects, and the effect of the dominant lower extremity.
Sixty-two knees of 31 healthy Japanese college students (15 males and 16 females) were included in this study. Magnetic resonance images of both knee joints of the subjects were measured using a 0.3 T scanner. The medial and lateral posterior tibial slope angles were measured from the obtained magnetic resonance images. Magnetic resonance images of the knee joint of the dominant lower extremity were used to compare differences in sexes between the medial and lateral posterior tibial slope angles. Bilateral knee joint magnetic resonance images were used to compare the dominant and non-dominant lower extremities. Independent t-tests were used to compare the differences regarding sex in the medial and lateral posterior tibial slope angles and to compare the dominant and non-dominant lower extremities.
A comparison of the mean lateral posterior tibial slope angle showed that males had a 8.8 ± 1.7° angle, while females had a 10.3 ± 2.2° angle, which was significantly greater (p = 0.047). There was no significant difference comparing the posterior tibial slope angle between the dominant and non-dominant lower extremities (p = 0.430).
From the result of this study, the lateral posterior tibial slope angle was significantly higher in the female group than in the male group. However, both the medial and lateral posterior tibial slope angles were found to be unaffected by the dominant lower extremity.
背景/目的：前交叉韧带损伤容易再次受伤，预防初次损伤至关重要。胫骨后倾角度是前交叉韧带损伤的解剖学危险因素之一。研究健康个体胫骨后倾角度的特征对于阐明前交叉韧带损伤的发生风险很重要。本研究的目的是确定健康日本受试者中与性别相关的胫骨后倾角度特征以及优势下肢的影响。
本研究纳入了31名健康日本大学生（15名男性和16名女性）的62个膝关节。使用0.3T扫描仪测量受试者双膝关节的磁共振图像。从获得的磁共振图像中测量胫骨内侧和外侧后倾角度。使用优势下肢膝关节的磁共振图像比较内侧和外侧胫骨后倾角度的性别差异。使用双侧膝关节磁共振图像比较优势下肢和非优势下肢。采用独立t检验比较内侧和外侧胫骨后倾角度的性别差异以及优势下肢和非优势下肢的差异。
平均外侧胫骨后倾角度比较显示，男性角度为8.8±1.7°，女性角度为10.3±2.2°，女性角度显著更大（p = 0.047）。优势下肢和非优势下肢的胫骨后倾角度比较无显著差异（p = 0.430）。
从本研究结果来看，女性组的外侧胫骨后倾角度显著高于男性组。然而，发现胫骨内侧和外侧后倾角度均不受优势下肢的影响。
