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May 9, 2026Spine Surgery and Related ResearchOpen Access

Tension Chord Four-Rod (TC4) Technique: A Simple, Adjustable Method for Reliable Lumbar Lordosis Restoration in Adult Spinal Deformity Surgery—Preliminary Clinical Results with a Minimum 1-Year Follow-Up

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Authors

BOBungo OtsukiTSTakashi SonoTSTakayoshi Shimizu

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Overview

Preliminary clinical results demonstrate effective lumbar lordosis restoration in adults using a novel four-rod technique, suggesting improved alignment control.

Key Points

  • The research aims to evaluate the effectiveness of the TC4 technique for restoring lumbar lordosis in adults undergoing spinal deformity surgery.
  • Developed the Tension Chord Four-Rod technique for lumbar alignment adjustment post-rod placement.
  • Evaluated clinical results with a minimum follow-up of one year, focusing on lumbar lordosis restoration.
  • Assessed implications for mechanical complications and alignment control during surgery.
  • Preliminary results indicate significant improvement in lumbar lordosis following TC4 technique application.
  • Participants experienced fewer mechanical complications compared to traditional methods.
  • Controlled adjustments post-fixation led to better alignment outcomes.

Cite This Study

Otsuki et al. (2026) studied this question.

synapsesocial.com/papers/69fed008b9154b0b82877129https://doi.org/10.22603/ssrr.2026-0067
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