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

  • Park, Hojin (Department of Plastic Surgery, Korea University Anam Hospital, Korea University College of Medicine) ;
  • Kim, Hyon-Surk (Department of Plastic Surgery, Korea University Anam Hospital, Korea University College of Medicine) ;
  • Lee, Byung-Il (Department of Plastic Surgery, Korea University Anam Hospital, Korea University College of Medicine)
  • Received : 2015.06.23
  • Accepted : 2015.08.23
  • Published : 2015.12.09

Abstract

Background: Poly-L-lactide materials combined with hydroxyapatite (u-HA /PLLA) have been developed to overcome the drawbacks of absorbable materials, such as radiolucency and comparably less implant strength. This study was designed to evaluate the usefulness of u-HA/PLLA material in the repair of orbital medial wall defects. Methods: This study included 10 patients with pure medial wall blow-out fractures. The plain radiographs were taken preoperatively, immediately after, and 2 months after surgery. The computed tomography scans were performed preoperatively and 2 months after surgery. Patients were evaluated for ease of manipulation, implant immobility, rigidity and complications with radiologic studies. Results: None of the patients had postoperative complications, such as infection or enophthalmos. The u-HA/PLLA implants had adequate rigidity, durability, and stable position on follow-up radiographic studies. On average, implants were thawed 3.4 times and required 14 minutes of handling time. Conclusion: The u-HA/PLLA implants are safe and reliable for reconstruction of orbital medial wall in terms of rigidity, immobility, radiopacity, and cost-effectiveness. These thin yet rigid implants can be useful where wide periosteal dissection is difficult due to defect location or size. Since the u-HA/PLLA material is difficult to manipulate, these implants are not suitable for use in complex 3-dimensional defects.

Keywords

References

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  1. Analysis of Orbital Volume Measurements Following Reduction and Internal Fixation Using Absorbable Mesh Plates and Screws for Patients With Orbital Floor Blowout Fractures vol.28, pp.7, 2015, https://doi.org/10.1097/scs.0000000000003730
  2. Navigation-Assisted Orbital Trauma Reconstruction Using a Bioactive Osteoconductive/Bioresorbable u-HA/PLLA System vol.18, pp.3, 2019, https://doi.org/10.1007/s12663-019-01207-y
  3. Navigation-Assisted Isolated Medial Orbital Wall Fracture Reconstruction Using an U-HA/PLLA Sheet via a Transcaruncular Approach vol.33, pp.7, 2015, https://doi.org/10.1080/08941939.2018.1546353
  4. A Narrative Review of u-HA/PLLA, a Bioactive Resorbable Reconstruction Material: Applications in Oral and Maxillofacial Surgery vol.15, pp.1, 2022, https://doi.org/10.3390/ma15010150