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Related Experiment Video

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Customized bilaminar resorbable mesh with BMP-2 promotes cranial bone defect healing.

Emil Kohan1, Jason Roostaeian, Joyce T Yuan

  • 1From the Division of Plastic and Reconstructive Surgery, University of California, Los Angeles (UCLA), David Geffen School of Medicine, Los Angeles, CA.

Annals of Plastic Surgery
|April 16, 2015
PubMed
Summary

A novel bilaminar resorbable construct with bone morphogenetic protein-2 (BMP-2) offers a superior solution for skull defect repair. This method improves bone healing and reduces complications compared to traditional techniques.

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Area of Science:

  • Biomaterials Science
  • Regenerative Medicine
  • Neurosurgery

Background:

  • Cranial vault reconstruction faces challenges with alloplastic and autogenous techniques, including complications like infection, nonhealing, and donor-site morbidity.
  • Bone morphogenetic protein-2 (BMP-2) shows promise for bone defect repair, offering a potential alternative to traditional methods.
  • A novel bilaminar resorbable construct, utilizing CAD/CAM and CT scan technology with BMP-2, was developed to provide structural support and promote bone healing without permanent foreign materials.

Purpose of the Study:

  • To evaluate the efficacy of a novel bilaminar resorbable construct combined with BMP-2 for cranial vault reconstruction.
  • To compare the outcomes of this new construct against traditional methods, including alloplastic materials and autogenous bone grafts.
  • To assess operating room time, blood loss, complications, reoperations, and bone healing rates.

Main Methods:

  • A retrospective study of 69 adult patients with critical-sized cranial vault defects undergoing reconstruction between 1999 and 2010.
  • Reconstructive options included titanium mesh, cryopreserved bone, patient-specific implants, autogenous split calvarial bone, and the novel BMP-2 loaded bilaminar resorbable construct.
  • Outcomes were compared based on surgical metrics and radiographic evidence of bone healing via 3D CT scans.

Main Results:

  • The BMP-2 construct group demonstrated significantly less operating room time and blood loss compared to the autogenous bone group.
  • Perioperative complications and reoperation rates were lower for both the autogenous bone and BMP-2 construct groups (5-14%) than for alloplastic groups (22-36%).
  • Bone healing rates were superior with the BMP-2 construct (85%) and autogenous bone (90%) compared to cryopreserved bone (18%) and alloplastic materials.

Conclusions:

  • A customized bilaminar resorbable construct with BMP-2 provides improved bone healing and fewer complications than alloplastic options for cranial vault defects.
  • This technique avoids the morbidity and blood loss associated with autogenous bone grafting.
  • Successful correction of critically sized adult calvarial defects was achieved with no residual foreign body, offering a promising alternative in reconstructive surgery.