Spine and Scoliosis Surgery, College of Physicians and Surgeons, NewYork-Presbyterian, The Allen Hospital, Columbia University, 5141 Broadway, New York, NY, 3FW, USA.
Hospital for Special Surgery, New York, NY, USA.
Spine Deform. 2021 May;9(3):635-644. doi: 10.1007/s43390-020-00278-z. Epub 2021 Jan 15.
Proximal junctional kyphosis (PJK) is a common problem that may occur following the surgical treatment of adult patients with spinal deformity. It is defined as the proximal junctional sagittal angle from the UIV and UVI + 2 of at least 10° AND at least 10° greater than the preop measurement. The reported incidence of radiographic PJK in the literature varies between 17 and 46%. A smaller subset of these patients may need revision surgery and are defined as proximal junctional failure (PJF), which can be associated with vertebral fracture, vertebral subluxation, failure of instrumentation, and neurological deficits. Several risk factors for development of PJK have been proposed. However, large-scale prospective studies are needed to better identify strategies to reduce the incidence of PJK.
近端交界性后凸（PJK）是一种常见的问题，可能发生在脊柱畸形的成年患者接受手术治疗后。它被定义为 UIV 和 UVI+2 的近端交界矢状角至少为 10°，并且比术前测量值至少大 10°。文献中报道的放射学 PJK 的发生率在 17%至 46%之间。其中一小部分患者可能需要接受翻修手术，这些患者被定义为近端交界失败（PJF），可能与椎体骨折、椎体半脱位、器械失败和神经功能缺损有关。已经提出了一些与 PJK 发生相关的危险因素。然而，需要进行大规模的前瞻性研究，以更好地确定降低 PJK 发生率的策略。
