An imaging study on establishing radial volar portals using the Kiss-in method in wrist arthroscopy - Summary - MDSpire

An imaging study on establishing radial volar portals using the Kiss-in method in wrist arthroscopy

  • By

  • Leining Wang

  • Jinhao Zhang

  • Bo Chen

  • Zhuolin Yuan

  • Bing Wang

  • Kunpeng Song

  • Gaoming Gong

  • Zhihui Huang

  • Rongzhang Qiu

  • July 1, 2026

  • 0 min

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Objective:

To evaluate the feasibility and safety of the Kiss-in method for VRMC and VRRC portals in wrist arthroscopy using 3D CT reconstructions.

Approach:
  • Study Design: A retrospective imaging study analyzing 64 adults (32M/32F) using 3D CT imaging to quantify anatomical parameters and identify gender-specific risks.
Key Findings:
  • No statistically significant differences were found between most parameters of the two portals, except for dTP and dTF.
  • Female dTP values were less than the trocar's length of 45 mm, while male values exceeded 45 mm in a significant number of cases.
  • The frequency of the 'risky zone' was significantly higher in the VRRC portals.
Interpretation:

The study supports the theoretical feasibility of the Kiss-in method for establishing radial volar portals, suggesting potential safety benefits for the VRRC portal and indicating that the standard trocar length may be more adequate for female patients.

Limitations:
  • The study is based on an anatomical simulation model, and conclusions are theoretical.
  • The cohort was limited to individuals with right-hand dominance and specific inclusion criteria.
Conclusion:

The determination of aTTR and aSTR has significance for the practical application of the Kiss-in method.

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