Gondi G, Roberson J R, Ganey T M, Shahriari A, Hutton W C
Department of Orthopaedics, Georgia Baptist Medical Center and Emory University, Atlanta, USA.
J South Orthop Assoc. 1997 Winter;6(4):266-72.
This study was designed to define the relationship between different combinations of prosthetic head diameters, neck lengths, and acetabular containment angles, and range of motion before component impingement. Three cadaveric pelves with attached lower limbs were mounted in their correct anatomic position. Acetabular and modular femoral stems were inserted into each of the six hips. For each combination of femoral head diameter, neck length, and acetabular liner overhang, the range of motion to impingement was measured in flexion, extension, abduction, adduction, external rotation, internal rotation, and internal rotation with 90 degrees hip flexion. These experiments suggest that the maximum range of motion before impingement can be attained by increasing the prosthetic head diameter and avoiding longer neck lengths with skirts. Acetabular liners with greater overhang decrease motion in all planes except flexion when the overhang is positioned posteriorly.
本研究旨在确定假体头部直径、颈部长度和髋臼包容角的不同组合与部件撞击前的活动范围之间的关系。将三个带有下肢的尸体骨盆安装在正确的解剖位置。在六个髋关节中分别插入髋臼和模块化股骨柄。对于股骨头直径、颈部长度和髋臼内衬悬垂的每种组合，测量在屈曲、伸展、外展、内收、外旋、内旋以及髋关节屈曲90度时的内旋状态下至撞击时的活动范围。这些实验表明，通过增加假体头部直径并避免使用带裙边的较长颈部，可以实现撞击前的最大活动范围。当髋臼内衬悬垂位于后方时，除屈曲外，更大悬垂的髋臼内衬会减少所有平面的活动。
