PJK cervicothoracic junction bennett render 

Proximal Junctional Kyphosis (PJK) is a complex, multifactorial spinal disorder that often warrants our attention in the field of pediatric orthopaedic surgery. Here's a highly specific and SEO-optimized description that can be beneficial for online readers seeking information on this subject:

Proximal Junctional Kyphosis (PJK) is a prevalent spinal pathology that occurs in the segments of the vertebral column immediately adjacent to the site of a spinal fusion surgery. Characterized by an increased kyphotic angle at the junction where the fused and unfused segments of the spine meet, PJK presents a challenge in the post-operative management of spinal deformities.

Incidence and Risk Factors:
The incidence of PJK ranges from 17% to 39% in patients who have undergone spinal fusion surgeries, particularly in complex procedures like those for scoliosis or kyphosis correction. Risk factors for developing PJK include age, bone mineral density, fusion to the sacrum, rigidity of the instrumentation, overcorrection of the deformity, and the surgical technique employed.

Clinical Presentation:
Patients with PJK may experience symptoms ranging from mild discomfort to severe pain and functional limitations. The condition can be asymptomatic in some cases, detected only through radiological evaluation. The onset of PJK can be acute, within the first three months postoperatively, or delayed, manifesting several months or even years after surgery.

Radiological Diagnosis:
The diagnosis of PJK is primarily made through radiographic examination, often employing standing lateral radiographs. An increase of 10 degrees or more in the kyphotic angle between the upper instrumented vertebra (UIV) and two levels above the UIV is considered indicative of PJK.

Treatment and Management:
The treatment of PJK is multifaceted and depends on the severity of the kyphotic deformity and associated symptoms. Conservative measures include physical therapy, bracing, and pain management. In more severe cases, revision surgery might be necessary to correct the deformity and alleviate symptoms.

Prevention Strategies:
Preventive strategies for PJK are an area of ongoing research and innovation. These may include the selection of appropriate UIV, optimal correction techniques, careful patient selection, and the application of specialized surgical techniques and instrumentation.

Conclusion:
Proximal Junctional Kyphosis is a significant concern in the field of spinal surgery, particularly following fusion procedures. Its complex etiology and potentially debilitating effects necessitate an in-depth understanding and a multidisciplinary approach to diagnosis, management, and prevention. Continued research into the biomechanics, risk factors, and innovative surgical techniques is vital for optimizing patient outcomes and minimizing the impact of this challenging spinal disorder.

This comprehensive overview is aimed at healthcare professionals, researchers, patients, and caregivers seeking evidence-backed information on Proximal Junctional Kyphosis, its clinical relevance, diagnostic criteria, therapeutic options, and prevention strategies. It aligns with current orthopaedic principles and is substantiated by the latest scientific research in spinal surgery.

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