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KMID : 1189320220160030440
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Asian Spine Journal
2022 Volume.16 No. 3 p.440 ~ p.450
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Proximal Junctional Kyphosis in Adult Spinal Deformity: Definition, Classification, Risk Factors, and Prevention Strategies
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Kim Hong-Jin
Yang Jae-Hyuk
Chang Dong-Gune
Suk Se-Il
Suh Seung-Woo
Kim Sang-Il
Song Kwang-Sup
Park Jong-Beom
Cho Woo-Jin
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Abstract
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Proximal junctional problems are among the potential complications of surgery for adult spinal deformity (ASD) and are associated with higher morbidity and increased rates of revision surgery. The diverse manifestations of proximal junctional problems range from proximal junctional kyphosis (PJK) to proximal junctional failure (PJF). Although there is no universally accepted definition for PJK, the most common is a proximal junctional angle greater than 10° that is at least 10° greater than the preoperative measurement. PJF represents a progression from PJK and is characterized by pain, gait disturbances, and neurological deficits. The risk factors for PJK can be classified according to patient-related, radiological, and surgical factors. Based on an understanding of the modifiable factors that contribute to reducing the risk of PJK, prevention strategies are critical for patients with ASD.
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KEYWORD
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Proximal junctional problems, Proximal junctional kyphosis, Proximal junctional failure, Adult spinal deformity, Prevention strategies
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