Vailas J C, Hurwitz S, Wiesel S W
Department of Orthopaedic Surgery, George Washington University Medical Center, Washington, DC 20037.
J Trauma. 1989 Nov;29(11):1494-6.
In acetabular fractures, the size of a significant posterior wall fragment remains undefined as it affects joint stability. The purpose of this study was to quantitatively evaluate fragment size and hip stability in cadaveric specimens after serial osteotomies. Also, the role of the posterior capsule, in the various osteotomies, was evaluated for changes in hip stability. We found that fragments involving 25% or less of the acetabulum are insignificant, i.e., do not affect joint stability, while fragments involving 50% or more are significant. The significance of transitional fragments (25-50% of the acetabulum) is determined by the posterior capsule.
在髋臼骨折中，由于会影响关节稳定性，较大后壁骨折块的大小尚无明确界定。本研究的目的是在尸体标本上进行系列截骨术后，定量评估骨折块大小和髋关节稳定性。此外，还评估了后关节囊在各种截骨术中对髋关节稳定性变化的作用。我们发现，累及髋臼25%或更少的骨折块不显著，即不影响关节稳定性，而累及50%或更多的骨折块则较为显著。过渡性骨折块（占髋臼的25%-50%）的显著性由后关节囊决定。
