Influence of PEEK Coating on Hip Implant Stress Shielding: A Finite Element Analysis

Table 2

Coating thickness [m]	Proximal zone cancellous bone volume		Mid zone cancellous bone volume		Tip zone cancellous bone volume		Complete cancellous bone volume
	Average stress [MPa]	Change coated versus uncoated [%]	Average stress [MPa]	Change coated versus uncoated [%]	Average stress [MPa]	Change coated versus uncoated [%]	Average stress [MPa]	Change coated versus uncoated [%]
Uncoated	1.83	—	0.71	—	2.32	—	1.32	—
100	2.69	47	2.06	190	2.69	16%	2.39	81%
200	2.76	51	2.09	194	2.69	16%	2.43	84%
300	2.84	55	2.13	200	2.72	17%	2.48	88%
400	2.94	60	2.16	204	2.72	17%	2.54	92%

Note: effective von Misses stress.