Safety and efficacy of additive manufactured porous implants is a growing concern due to several, recent recalls. The safety of bone implants depends on the effects of implantation and partial bone ingrowth on stress and strain. Finite element analysis, using two new algorithms to simulate bone ingrowth, was verified against histology results for an ovine condylar critical sized defect model. Implants were manufactured from Ti6Al4V using selective laser sintering. Results showed that partial bone formation reduces stress concentrations to safe levels, improving the long-term fatigue resistance. Higher bone ingrowth was predicted for implants made from lower modulus Titanium-tantalum alloy.
|Title of host publication||Proc. SPIE 11381, Health Monitoring of Structural and Biological Systems XIV, 113812V|
|Editors||Paul Fromme, Zhongqing Su|
|Publication status||Published - 22 Apr 2020|
|Event||SPIE Smart Structures + Nondestructive Evaluation: Health Monitoring of Structural and Biological Systems XIV - California, United States|
Duration: 27 Apr 2020 → 8 May 2020
|Conference||SPIE Smart Structures + Nondestructive Evaluation|
|Period||27/04/20 → 8/05/20|