Schleifenbaum Stefan, Prietzel Torsten, Hädrich Carsten, Möbius Robert, Sichting Freddy, Hammer Niels
Department of Anatomy, University of Otago, Dunedin, New Zealand; Department of Orthopedics, Trauma and Plastic Surgery, University of Leipzig, Leipzig, Germany.
Department of Orthopedics, Trauma and Plastic Surgery, University of Leipzig, Leipzig, Germany; Department of Orthopedics and Trauma Surgery, HELIOS Clinic Blankenhain, Blankenhain, Germany.
J Biomech. 2016 Oct 3;49(14):3437-3443. doi: 10.1016/j.jbiomech.2016.09.001. Epub 2016 Sep 17.
Hip joint stability is maintained by the surrounding ligaments, muscles, and the atmospheric pressure exerted via these structures. It is unclear whether the ligaments are capable of preventing dislocation solely due to their tensile properties, and to what extent they undergo age-related changes. This study aimed to obtain stress-strain data of the hip ligaments over a large age range.
Stress-strain data of the iliofemoral (IL), ischiofemoral (IS) and pubofemoral ligament (PF) were obtained from cadavers ranging between 14 and 93 years using a highly standardized setting. Maximum strains were compared to the distances required for dislocation.
Elastic modulus was 24.4 (IL), 22.4 (IS) and 24.9N/mm (PF) respectively. Maximum strain was 84.5%, 86.1%, 72.4% and ultimate stress 10.0, 7.7 and 6.5N/mm for the IL, IS and PF respectively. None of these values varied significantly between ligaments or sides. The IS' elastic modulus was higher and maximum strain lower in males. Lower elastic moduli of the PF and higher maximum strains for the IS and PF were revealed in the ≥55 compared to the <55 population. Maximum strain exceeded the dislocation distance of the IS without external hip joint rotation in females, and of the IS and cranial IL under external rotation in both genders.
Tensile and failure load properties of the hip joint ligaments are largely variable. The IS and PF change age-dependently. Though the hip ligaments contribute to hip stability, the IS and cranial IL may not prevent dislocation due to their elasticity.
髋关节的稳定性由周围的韧带、肌肉以及通过这些结构施加的大气压力维持。目前尚不清楚韧带是否仅因其拉伸特性就能防止脱位，以及它们在多大程度上会发生与年龄相关的变化。本研究旨在获取大年龄范围内髋关节韧带的应力-应变数据。
使用高度标准化的设置，从14至93岁的尸体中获取髂股韧带（IL）、坐骨股韧带（IS）和耻骨股韧带（PF）的应力-应变数据。将最大应变与脱位所需的距离进行比较。
弹性模量分别为IL 24.4、IS 22.4和PF 24.9N/mm²。IL、IS和PF的最大应变分别为84.5%、86.1%、72.4%，极限应力分别为10.0、7.7和6.5N/mm²。这些值在韧带或两侧之间均无显著差异。男性的IS弹性模量较高，最大应变较低。与＜55岁人群相比，≥55岁人群的PF弹性模量较低，IS和PF的最大应变较高。在女性中，IS在无髋关节外旋时的最大应变超过脱位距离，在两性中，IS和颅侧IL在有外旋时的最大应变超过脱位距离。
髋关节韧带的拉伸和破坏载荷特性差异很大。IS和PF随年龄变化。尽管髋关节韧带有助于髋关节稳定，但由于其弹性，IS和颅侧IL可能无法防止脱位。
