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14 Results Found

  • Article
  • Open Access
13 Citations
5,085 Views
10 Pages

4 June 2023

Background and Objectives: In this retrospective cohort study, we investigate associations between the Hounsfield units (HU) value of upper instrumented vertebra (UIV) and proximal junctional kyphosis (PJK) after adult spinal deformity (ASD) surgery....

  • Article
  • Open Access
2 Citations
3,484 Views
10 Pages

A Novel Method for Predicting Ideal Postoperative Upper Instrumented Vertebra Tilt to Prevent Lateral Shoulder Imbalance after Scoliosis Correction Surgery

  • Wen Zhang,
  • Mengmeng Xu,
  • Weimin Zhang,
  • Tao Li,
  • Yudong Lai,
  • Fei Chen,
  • Mingtong Sun,
  • Haoyu Wang,
  • Jianmin Sun and
  • Zhensong Jiang
  • + 1 author

23 February 2023

Lateral shoulder imbalance (LSI) is reflected radiologically by the clavicle angle (CA). How to achieve postoperative lateral shoulder balance (LSB) after scoliosis correction surgery remains unclear. In the current study, by using the preoperative u...

  • Article
  • Open Access
771 Views
10 Pages

How Much Variance Exists Among Published Definitions of Proximal Junctional Kyphosis? A Retrospective Cohort Study of Adult Spinal Deformity

  • Tim T. Bui,
  • Karan Joseph,
  • Alexander T. Yahanda,
  • Samuel Vogl,
  • Miguel Ruiz-Cardozo and
  • Camilo A. Molina

4 August 2025

Background/Objectives: We sought to characterize the variance and overlap among definitions of Proximal Junctional Kyphosis (PJK) used in the adult spinal deformity (ASD) literature. PJK is defined as excess in PJK angle, a Cobb angle between the upp...

  • Article
  • Open Access
2 Citations
1,242 Views
17 Pages

The Paraspinal Sarcopenia at the Upper Instrumented Vertebra Is a Predictor of Discoligamentous but Not Bony Proximal Junctional Kyphosis

  • Zach Pennington,
  • Anthony L. Mikula,
  • Abdelrahman Hamouda,
  • Maria Astudillo Potes,
  • Ahmad Nassr,
  • Brett A. Freedman,
  • Arjun S. Sebastian,
  • Jeremy L. Fogelson and
  • Benjamin D. Elder

12 February 2025

Background/Objectives: Both poor bone quality and paraspinal sarcopenia have been suggested as risk factors for proximal junctional kyphosis (PJK) at the upper instrumented vertebra (UIV) following long-segment thoracolumbar fusion. Methods: Adults &...

  • Article
  • Open Access
2,333 Views
15 Pages

25 March 2024

Back pain is regularly associated with biomechanical changes in the spine. The traditional methods to assess spine biomechanics use ionising radiation. Vertebral Metrics (VM) is a non-invasive instrument developed by the authors in previous research...

  • Article
  • Open Access
3 Citations
2,547 Views
14 Pages

Distal Junctional Failure: A Feared Complication of Multilevel Posterior Spinal Fusions

  • Soufiane Ghailane,
  • Houssam Bouloussa,
  • Manuel Fernandes Marques,
  • Jean-Etienne Castelain,
  • Vincent Challier,
  • Matthieu Campana,
  • Clément Jacquemin,
  • Jean-Marc Vital and
  • Olivier Gille

23 August 2024

Objectives: Distal junctional failure (DJF) is less commonly described than proximal junctional failure following posterior spinal fusion, and particularly adult spinal deformity (ASD) surgery. We describe a case series of patients with DJF, taking i...

  • Feature Paper
  • Article
  • Open Access
4 Citations
3,604 Views
11 Pages

Comparative Analysis of Outcomes in Adult Spinal Deformity Patients with Proximal Junctional Kyphosis or Failure Initially Fused to Upper Versus Lower Thoracic Spine

  • Oluwatobi O. Onafowokan,
  • Renaud Lafage,
  • Peter Tretiakov,
  • Justin S. Smith,
  • Breton G. Line,
  • Bassel G. Diebo,
  • Alan H. Daniels,
  • Jeffrey L. Gum,
  • Themistocles S. Protopsaltis and
  • Peter G. Passias
  • + 25 authors

18 December 2024

Background: Patients with proximal junctional kyphosis (PJK) or failure (PJF) may demonstrate disparate outcomes and recovery when fused to the upper (UT) versus lower (LT) thoracic spine. Few studies have distinguished the reoperation and recovery a...

  • Article
  • Open Access
1 Citations
1,802 Views
12 Pages

Biomechanical Changes in Kyphotic Cervical Spine After Anterior Cervical Discectomy and Fusion with Different Degrees of Correction

  • Hongyu Chen,
  • Xu Ma,
  • Shengfa Pan,
  • Li Zhang,
  • Yanbin Zhao,
  • Xin Chen,
  • Yu Sun and
  • Feifei Zhou

Cervical kyphosis is a debilitating disease, and its surgical treatment involves correction to restore sagittal alignment. Few studies have explored the appropriate degree of correction, and the biomechanical impact of correction on the cervical spin...

  • Case Report
  • Open Access
1 Citations
2,516 Views
7 Pages

Posterior Occipitocervical Fixation and Intrathecal Baclofen Therapy for the Treatment of Basilar Invagination with Klippel–Feil Syndrome: A Case Report

  • Hitoshi Tonomura,
  • Masateru Nagae,
  • Hidenobu Ishibashi,
  • Kunihiko Hosoi,
  • Takumi Ikeda,
  • Yasuo Mikami and
  • Kenji Takahashi

Klippel–Feil syndrome (KFS) is characterized by the congenital fusion of the cervical vertebrae and is sometimes accompanied by anomalies in the craniocervical junction. In basilar invagination (BI), which is a dislocation of the dens in an upp...

  • Article
  • Open Access
9 Citations
2,041 Views
8 Pages

Perioperative Predictive Factors for Positive Outcomes in Spine Fusion for Adult Deformity Correction

  • Alice Baroncini,
  • Filippo Migliorini,
  • Francesco Langella,
  • Paolo Barletta,
  • Per Trobisch,
  • Riccardo Cecchinato,
  • Marco Damilano,
  • Emanuele Quarto,
  • Claudio Lamartina and
  • Pedro Berjano

28 December 2021

Purpose: Identifying perioperative factors that may influence the outcomes of long spine fusion for the treatment of adult deformity is key for tailored surgical planning and targeted informed consent. The aim of this study was to analyze the associa...

  • Article
  • Open Access
1 Citations
1,855 Views
14 Pages

New Effective Intraoperative Techniques for the Prevention of Coronal Imbalance after Circumferential Minimally Invasive Correction Surgery for Adult Spinal Deformity

  • Masayuki Ishihara,
  • Shinichirou Taniguchi,
  • Naoto Ono,
  • Takashi Adachi,
  • Yoichi Tani,
  • Masaaki Paku,
  • Koki Kawashima,
  • Muneharu Ando and
  • Takanori Saito

31 August 2023

This study aimed to devise measures and investigate their effect on coronal imbalance (CI) after circumferential minimally invasive correction surgery (CMIS) with lateral lumbar interbody fusion and percutaneous pedicle screw for adult spinal deformi...

  • Article
  • Open Access
1 Citations
1,218 Views
12 Pages

Background: Multilevel posterior spinal fusion to T10 often encounters complications such as screw loosening and proximal junctional kyphosis. Cement augmentation or prophylactic vertebroplasty is used to prevent these, but their biomechanical effect...

  • Article
  • Open Access
11 Citations
5,234 Views
12 Pages

Return to Sport after Adolescent Idiopathic Scoliosis (AIS) Correction Surgery: A Retrospective Data Analysis

  • Wojciech Pepke,
  • Abhilash Madathinakam,
  • Tom Bruckner,
  • Tobias Renkawitz,
  • Stefan Hemmer and
  • Michael Akbar

16 February 2023

Sports are relevant to younger populations in society. Adolescent idiopathic scoliosis (AIS) patients who undergo surgical correction of the spine are often intensively involved in sports. For that, returning to the sport is often an important concer...

  • Article
  • Open Access
1,756 Views
14 Pages

Risk Factor Analysis for Proximal Junctional Kyphosis in Neuromuscular Scoliosis: A Single-Center Study

  • Tobias Lange,
  • Kathrin Boeckenfoerde,
  • Georg Gosheger,
  • Sebastian Bockholt and
  • Albert Schulze Bövingloh

22 May 2025

Background/Objectives: Proximal junctional kyphosis (PJK) is one of the most frequently discussed complications following corrective surgery in patients with neuromuscular scoliosis (NMS). Despite its clinical relevance, the etiology of PJK remains i...