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Updated: Jun 15, 2026

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models

Published on: October 9, 2014

A new condyle repositionable plate for sagittal split ramus osteotomy.

Rong-Min Baek¹, Sang Woo Lee

¹Department of Plastic and Reconstructive Surgery, Seoul National University College of Medicine, Seoul, Korea.

The Journal of Craniofacial Surgery

|March 11, 2010

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A novel titanium plate for sagittal split ramus osteotomy (SSRO) allows proximal segment repositioning after surgery. This innovation minimizes early relapse and temporomandibular joint complications in SSRO setback procedures.

Area of Science:

Oral and Maxillofacial Surgery
Orthognathic Surgery
Biomaterials Engineering

Background:

Sagittal split ramus osteotomy (SSRO) aims to correct jaw deformities but faces challenges with proximal segment stability.
Maintaining anatomic position post-SSRO is crucial to prevent early relapse and condyle malposition.
Existing fixation methods have limitations in addressing postoperative condylar adjustments.

Purpose of the Study:

To introduce and evaluate a new titanium plate designed for SSRO surgery.
To assess the plate's ability to allow controlled postoperative mobility of the proximal segment.
To determine the efficacy of this plate in minimizing early relapse and condyle malposition.

Main Methods:

Development of a novel titanium plate featuring a sliding oval hole in the distal segment.

Related Experiment Videos

Last Updated: Jun 15, 2026

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models

Adjustable Stiffness, External Fixator for the Rat Femur Osteotomy and Segmental Bone Defect Models

Published on: October 9, 2014

Application of the new plate in 23 patients undergoing SSRO setback surgery.

Postoperative follow-up to monitor for complications, including relapse and temporomandibular joint issues.

Main Results:

The new titanium plate facilitated successful repositioning of the proximal segment post-SSRO.
No early relapse or temporomandibular joint complications were observed in the 23 treated patients.
The plate's design allowed for effective management of condyle position during intermaxillary fixation.

Conclusions:

The novel titanium plate offers a promising solution for improving outcomes in SSRO surgery.
This innovative fixation method effectively minimizes early relapse and avoids postoperative complications.
The plate's capacity for controlled proximal segment mobility enhances surgical predictability and patient safety.