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August 27, 2025Open Access

Indications for Additional Pedicle Subtraction Osteotomy in Iatrogenic Flatback After Short-Segment Fusion Surgery

Sung-Min Kim In‐Seok Son Yong‐Chan Kim Xiongjie Li Maolin Jin

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Key Points

Group B demonstrated greater C7 sagittal vertical axis and its correction compared to Group A.
A significant number of patients in Group A experienced excessive anterior disc height distraction post-surgery.
Preoperative kyphotic fused segment angle was notably higher in Group B than in Group A.
ACR combined with PSO is recommended for patients with specific preoperative parameters indicating iatrogenic flatback.

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Implication

Observational analysis determines indications for pedicle subtraction osteotomy in iatrogenic flatback, suggesting optimal criteria for surgery.

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Cite This Study

Kim et al. (2025) studied this question.

synapsesocial.com/papers/68bb42142b87ece8dc958429 https://doi.org/10.20944/preprints202508.1824.v1

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Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

1Indications for Additional Pedicle Subtraction Osteotomy in Iatrogenic Flatback After Short-Segment Fusion Surgery2025 · 1 citations
2Effect of L2 and L3 pedicle subtraction osteotomy on radiological and clini̇cal outcomes in ankylosing spondylitis-associated thoracolumbar kyphosis wi̇th similar sagittal alignment2025
3Fracture morphology–driven surgical strategy in ankylosing spondylitis: when does sagittal imbalance mandate pedicle subtraction osteotomy?Review · 2026
4Determining the vertebra for pedicle subtraction osteotomy in surgical correction for ankylosing spondylitis with thoracolumbar kyphosis2024 · 2 citations
5A Reliable Prediction Method for the Pedicle Subtraction Osteotomy Angle in Ankylosing Spondylitis-Related Thoracolumbar Kyphosis: A Comparative Analysis with Existing ApproachesOriginal Research · 2026

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