Optomizing the Design of Two-piece Peek Implants in Orbito-zygomatic Reconstruction - The Jigsaw Technique
Polyetheretherketone (PEEK) is derived from the Polyaryletherketone family of linear aromatic polymers. The implantable grade of PEEK demonstrates a number of similarities to bone and has been available for some time as a patient specific implant in maxillofacial reconstruction.
Method
Patient specific implants are created on a virtual stereo lithographic model produced following CT scan carried out using a prescribed protocol (SYNTHES, UK). The implant is designed via digital subtraction to match the opposite side and discussed and modified to match the clinical scenario via planning webinar. In this poster we demonstrate some of the defects, planning techniques and solutions using various designs of modified “jigsaw piece” to facilitate insertion and fixation in the use of two piece PEEK implants to reconstruct the orbital rim, floor and zygomatic complex.
We present the results of 10 sequential cases where the "jigsaw design" technique has been sucessfully used for large volume maxillary and orbital defects.
Results
The relative ease of insertion and fixation, together with the precise anatomical fit and correction of the volume defect provide reduced operating time, improved patient acceptance and accuracy at the initial surgery. This has lead to increased patient satisfaction.
Conclusion
We have demonstrated a novel approach to facilitate inserting relatively large PEEK implants to correct significant post-traumatic deformity through minimal and familiar approaches to the facial skeleton.
References
1. Kim MM, Kofi D, Boahene O, Byrne PJ. Use of Customized Polyetheretherketone (PEEK) Implants in the Reconstruction of Complex Maxillofacial Defects. Arch Facial Plast Surg 2009; 11: (1) 53-57
2. Schlegel J and Green S. Polyetheretherketones (PEEK)- A Biocompaticble high performance plastic. Medical Plastics 2000; 14: 12.1-12.10
3. Jarman-Smith M. Evolving uses for implantable PEEK and PEEK based compounds. Med Device Technol 2008 Oct;19 (6) 12-15