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Proximal Junctional Kyphosis and Failure: Strategies for Prevention
Neurosurgery Clinics of North America, 2023Proximal junctional kyphosis (PJK) and proximal junctional failure/fractures (PJF) are common complications following long-segment posterior instrumented fusions for adult spinal deformity. As progression to PJF involves clinical consequences for patients and requires costly revisions that may undermine the utility of surgery and are ultimately ...
Ayush, Arora +3 more
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Recurrent Proximal Junctional Kyphosis
Techniques in Orthopaedics, 2020Proximal junctional kyphosis (PJK) is one of the most common radiographic forms of adjacent segment degeneration with an incidence as high as 50% in adult spinal deformity surgery. It is a multifactorial problem with much still to be learned about the etiology and the most efficacious prevention methods. The challenge of addressing PJK can certainly be
Philip J. York, Han Jo Kim
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Optimizing the Definition of Proximal Junctional Kyphosis: A Sensitivity Analysis
Spine, 2022Study Design. Diagnostic binary threshold analysis. Objective. (1) Perform a sensitivity analysis demonstrating the test performance metrics for any combination of proximal junctional angle (PJA) magnitude and change; (2) Propose a new proximal junctional kyphosis (PJK) criteria.
Francis Lovecchio +14 more
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Osteotomies in proximal junctional kyphosis in the cervicothoracic area
European Spine Journal, 2014Proximal junctional kyphosis (PJK) of the cervicothoracic spine is a deformity that can affect patients who have undergone long thoracolumbar instrumented fusion. Preoperative hyperkyphosis of the thoracic spine and changes of more than 30° in lumbar lordosis are independent risk factors for the onset of PJK.When PJK occurs in the cervicothoracic spine,
Cecchinato, R +3 more
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JBJS Reviews, 2019
» Proximal junctional kyphosis, a complication associated with both pediatric and adult spinal deformity surgical procedures, is defined as a proximal junctional sagittal Cobb angle of ≥10° or a proximal junctional sagittal Cobb angle at least 10° greater than the preoperative measurement.» Several risk factors for the ...
Aleksander P. Mika +5 more
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» Proximal junctional kyphosis, a complication associated with both pediatric and adult spinal deformity surgical procedures, is defined as a proximal junctional sagittal Cobb angle of ≥10° or a proximal junctional sagittal Cobb angle at least 10° greater than the preoperative measurement.» Several risk factors for the ...
Aleksander P. Mika +5 more
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Economic Impact of Proximal Junctional Kyphosis
Techniques in Orthopaedics, 2020Proximal junctional kyphosis (PJK) is a common occurrence after posterior thoracolumbar instrumented spinal fusions for adult spinal deformity (ASD). Despite its relative frequency, PJK’s economic impact has only recently gained appreciation and attention.
Alekos A. Theologis +2 more
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World Neurosurgery, 2021
Proximal junctional kyphosis (PJK) is a well-recognized complication following surgery for adult spinal deformity (ASD); however, definitions for PJK and its clinical implications can significantly vary by study. This study compares multiple definitions of PJK and describes incidence and clinical significance by definition.From 2014 to 2019, patients ...
Andy, Ton +4 more
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Proximal junctional kyphosis (PJK) is a well-recognized complication following surgery for adult spinal deformity (ASD); however, definitions for PJK and its clinical implications can significantly vary by study. This study compares multiple definitions of PJK and describes incidence and clinical significance by definition.From 2014 to 2019, patients ...
Andy, Ton +4 more
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Techniques in Orthopaedics, 2020
The development of proximal junctional kyphosis is complex and cannot be attributed to any single factor. The following paragraphs discuss some patient-related factors that have been linked to the development of this condition.
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The development of proximal junctional kyphosis is complex and cannot be attributed to any single factor. The following paragraphs discuss some patient-related factors that have been linked to the development of this condition.
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Diagnosis and Classification of Proximal Junctional Kyphosis and Proximal Junctional Failure
2017Technical advancements have allowed the spinal deformity surgeon to achieve newfound abilities to correct severe spinal malalignment. However, proximal adjacent segment pathology (ASP) remains a significant issue. Examples include proximal junctional kyphosis (PJK) and proximal junctional failure (PJF).
Ngoc-Lam M. Nguyen +5 more
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Biomechanical analysis of proximal junctional kyphosis: preliminary results
2012Proximal junctional kyphosis (PJK) is a complication related to spinal instrumentation. Defined as a pathological kyphosis of levels above the upper instrumented vertebra, PJK is not yet fully understood although many studies have been conducted in this regard.
M, Cammarata +3 more
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