The Effect of Stem Design on the Prevalence of Squeaking Following Ceramic-on-Ceramic Bearing Total Hip

Arthroplasty

by Camilo Restrepo, Zachary D. Post, Brandon Kai, and William J. Hozack

J Bone Joint Surg AmVolume 92(3):550-557

March 1, 2010

©2010 by The Journal of Bone and Joint Surgery, Inc.

The Omnifit stem, made of titanium-aluminum-vanadium alloy.

Camilo Restrepo et al. J Bone Joint Surg Am 2010;92:550-557

©2010 by The Journal of Bone and Joint Surgery, Inc.

The Trident cup is made of titanium-aluminum-vanadium alloy and accepts a ceramic liner within a commercially pure titanium sleeve.

Camilo Restrepo et al. J Bone Joint Surg Am 2010;92:550-557

©2010 by The Journal of Bone and Joint Surgery, Inc.

The Accolade stem is made of a titanium-molybdenum-zirconium-iron alloy.

Camilo Restrepo et al. J Bone Joint Surg Am 2010;92:550-557

©2010 by The Journal of Bone and Joint Surgery, Inc.

Close-up photograph showing the neck geometry of the Omnifit (A) on the left and the Accolade (B) on the right.

Camilo Restrepo et al. J Bone Joint Surg Am 2010;92:550-557

©2010 by The Journal of Bone and Joint Surgery, Inc.

A: Photograph showing stripe wear on an explanted alumina ceramic head.

Camilo Restrepo et al. J Bone Joint Surg Am 2010;92:550-557

©2010 by The Journal of Bone and Joint Surgery, Inc.