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Related Experiment Video

Updated: Jun 17, 2026

C-arm-Free Simultaneous OLIF51 and Percutaneous Pedicle Screw Fixation in a Single Lateral Position

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Navigated scaphoid screw placement using customized scaphoid splint: an anatomical study.

Musa Citak¹, Padhraig F O'Loughlin, Daniel Kendoff

¹Trauma Department, Hannover Medical School, Germany. citak.musa@mh-hannover.de

Archives of Orthopaedic and Trauma Surgery

|January 16, 2010

Summary

This summary is machine-generated.

A novel Scaph-splint device improved accuracy for navigated scaphoid screw insertion. This tool stabilizes the wrist, enhancing precision in complex surgeries without direct scaphoid penetration.

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Area of Science:

Orthopedic surgery
Medical device innovation
Surgical navigation

Background:

Accurate placement of reference markers is crucial for navigated surgery.
Navigating small, complex anatomy like the scaphoid presents challenges for marker stability.
A customized "Scaph-splint" device with an integrated reference marker was developed.

Observation:

A cadaveric feasibility study used five upper extremity specimens.
The "Scaph-splint" secured the wrist, and 3D fluoroscopy guided scaphoid screw placement.
Drill canal accuracy was evaluated using a grading system (Grade 1-3).

Findings:

Scaphoid drilling accuracy was Grade 1 in 2 specimens, Grade 2 in 2, and Grade 3 in 1.
No repeat drilling was necessary, and no registration failures occurred.
The "Scaph-splint" facilitated stable marker fixation without direct scaphoid penetration.

Implications:

The "Scaph-splint" enhances precision for navigated scaphoid screw insertion.
This device improves surgical navigation in complex wrist anatomy.
Combined with 3D fluoroscopy, it offers a more accurate and stable approach.