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Optimizing the Spinal Interbody Implant: Current Advances in Material Modification and Surface Treatment Technologies
Paul J Park1, Ronald A Lehman2
1The Spine Hospital, NewYork-Presbyterian/Columbia University Irving Medical Center, 5141 Broadway, 3 Field West-022, New York, NY, 10034, USA. pp2396@cumc.columbia.edu.
Current Reviews in Musculoskeletal Medicine
|August 21, 2020
Summary
Recent innovations in spinal fusion surgery focus on optimizing interbody implants. Enhancements to titanium and polyetheretherketone (PEEK) materials aim to improve bone fusion rates.
Area of Science:
- Spinal surgery
- Biomaterials science
- Orthopedic implants
Background:
- Spinal fusion surgery rates are increasing.
- Interbody implants are crucial for spinal fusion.
- Optimizing implant mechanical and biologic properties is key for fusion.
Purpose of the Study:
- Review recent innovations in interbody implant materials and surface treatments.
- Focus on titanium alloy and polyetheretherketone (PEEK) implants.
- Maximize bony fusion rates in spinal surgery.
Main Methods:
- Review of recent literature on spinal interbody implant innovations.
- Analysis of material modification and surface treatment techniques.
- Comparison of titanium alloy and PEEK implant properties.
Main Results:
- Titanium offers better osseointegration than PEEK but has a higher elastic modulus.
- PEEK has an elastic modulus closer to bone but lacks inherent biologic advantages.
- Innovations include increasing porosity and surface roughness for titanium, and surface coating (titanium, hydroxyapatite) for PEEK.
Conclusions:
- Ongoing advancements in titanium and PEEK implants are essential for improving spinal fusion.
- Surface treatments and material modifications enhance implant performance.
- Future research may explore novel biomaterials for interbody fusion.
