Proximal Junctional Kyphosis (PJK) is a common radiographic finding that can occur after extensive spinal fusion procedures. It is characterized by progression of kyphosis at the proximal end of a spinal construct, with the kyphotic angle exceeding 10° and potentially leading to decompensation in the sagittal plane, revision surgery, and neurological deterioration. PJK can result from a variety of factors, including patient-related, radiographic, and surgical influences.

A comprehensive understanding of PJK is essential as it can have significant clinical implications for individuals who undergo long-segment posterior instrumented fusions for adult spinal deformity. Studies have been conducted to investigate the causes, risk factors, and strategies for both prevention and treatment of PJK. Much of the existing literature emphasizes the need for preventive measures to minimize the occurrence and progression of PJK, given its potential clinical and economic impact.

It is critical for healthcare professionals and researchers to develop effective strategies for preventing and managing PJK in patients undergoing spinal fusion procedures to mitigate the associated clinical and financial burdens.

RESOURCES

Duvvuri P, Lafage R, Bannwarth M, et al. The Shape of the Fused Spine is Associated With Acute Proximal Junctional Kyphosis in Adult Spinal Deformity: An Assessment Based on Vertebral Pelvic Angles. Glob Spine J. Epub ahead of print 2023. DOI: 10.1177/21925682221150770. Read more...

Lovecchio F, Lafage R, Line B, et al. Optimizing the Definition of Proximal Junctional Kyphosis: A Sensitivity Analysis. Spine (Phila Pa 1976) 2023;48:414–20. Read more...

Passias PG, Alas H, Naessig S, et al. Timing of conversion to cervical malalignment and proximal junctional kyphosis following surgical correction of adult spinal deformity: A 3-year radiographic analysis. J Neurosurg Spine 2021;34:830–8. Read more...

Hart RA, McCarthy I, Ames CP, et al. Proximal Junctional Kyphosis and Proximal Junctional Failure. Neurosurg Clin N Am 2013;24:213–8. Read more...

For additional research on Proximal Junctional Kyphosis, visit https://issgf.org/researches