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Related Experiment Video

Updated: Feb 22, 2026

Three-Dimensional Reconstruction of Orbital Fractures
08:18

Three-Dimensional Reconstruction of Orbital Fractures

Published on: May 16, 2025

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Medial Wall Orbital Reconstruction using Unsintered Hydroxyapatite Particles/Poly L-Lactide Composite Implants.

Hojin Park1, Hyon-Surk Kim1, Byung-Il Lee1

  • 1Department of Plastic Surgery, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea.

Archives of Craniofacial Surgery
|September 16, 2017
PubMed
Summary

This study found that hydroxyapatite/poly-L-lactide (u-HA/PLLA) implants are safe and effective for orbital medial wall reconstruction, offering rigidity and radiopacity. However, their handling difficulty limits use in complex 3D defects.

Keywords:
Absorbable implantsOrbital fracturesOrbital implants

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Area of Science:

  • Biomaterials Science
  • Ophthalmic Surgery
  • Medical Device Engineering

Background:

  • Absorbable materials often suffer from radiolucency and insufficient implant strength.
  • Hydroxyapatite/poly-L-lactide (u-HA/PLLA) composites aim to enhance properties of traditional absorbable materials.

Purpose of the Study:

  • To evaluate the clinical utility of u-HA/PLLA material for reconstructing orbital medial wall defects.
  • To assess the safety, efficacy, and handling characteristics of u-HA/PLLA implants in orbital fracture repair.

Main Methods:

  • A cohort of 10 patients with pure medial wall blow-out fractures underwent surgical repair using u-HA/PLLA implants.
  • Pre- and post-operative plain radiographs and computed tomography scans were utilized for evaluation.
  • Assessment included ease of manipulation, implant stability, rigidity, and complication monitoring.

Main Results:

  • No postoperative complications such as infection or enophthalmos were observed in any patients.
  • u-HA/PLLA implants demonstrated adequate rigidity, durability, and maintained stable positions.
  • Implants required an average of 3.4 thawing cycles and 14 minutes of handling time per case.

Conclusions:

  • u-HA/PLLA implants are a safe, reliable, radiopaque, and cost-effective option for orbital medial wall reconstruction.
  • The rigidity and thin profile of these implants are advantageous in challenging surgical sites.
  • The material's manipulation difficulty restricts its application in complex, three-dimensional orbital defects.