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Updated: Jun 7, 2026

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Published on: February 17, 2023

Image-based quantitative osteotomy planning for congenital proximal radioulnar synostosis: plan-execution discrepancy

Yi-Chih Chen¹, Hua-Ju Shih², Chia-Hsieh Chang³

¹Department of Biomedical Engineering, National Taiwan University, Taipei, Taiwan; Department of Orthopedics, Cathay General Hospital, Taipei, Taiwan.

Journal of Shoulder and Elbow Surgery

|June 5, 2026

Summary

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This summary is machine-generated.

This study introduces an image-based planning tool for congenital proximal radioulnar synostosis surgery, aiming to improve forearm rotation and reduce subjective planning. Results suggest quantitative modeling can aid surgical decisions, though further validation is needed.

Area of Science:

Pediatric Orthopedics
Biomechanical Engineering
Medical Imaging Analysis

Background:

Congenital proximal radioulnar synostosis is a rare condition limiting forearm rotation and daily function.
Current surgical planning for radial osteotomy is subjective, relying on surgeon experience.
Objective, quantitative planning methods are needed to improve surgical outcomes.

Purpose of the Study:

To evaluate an image-based quantitative planning framework for congenital proximal radioulnar synostosis.
To provide objective geometric parameters for radial osteotomy planning.
To assess the framework's impact on surgical decision-making and patient outcomes.

Main Methods:

Retrospective analysis of eight unilateral cases with congenital proximal radioulnar synostosis.

Keywords:

Proximal radioulnar synostosis computational modeling forearm rotation image-based modeling osteotomy pediatric orthopedics radiographic outcomes surgical planning

Related Experiment Videos

Last Updated: Jun 7, 2026

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy

Published on: February 17, 2023

Preoperative radiographs were used to reconstruct 3D geometry and derive planning parameters.

An algorithm utilizing polynomial fitting and calculus-based minimization identified osteotomy points and predicted shortening.

Main Results:

Seven of eight forearms demonstrated improved rotational range post-surgery.
Discrepancies between model-estimated and surgeon-applied bone shortening correlated with radial head alignment.
Suboptimal radial head alignment occurred in cases with larger discrepancies in shortening.

Conclusions:

Quantitative, image-based modeling shows potential for objective osteotomy planning in congenital proximal radioulnar synostosis.
This approach may reduce variability in surgical decision-making.
Further prospective validation is required due to study limitations (small sample size, retrospective design).