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Understanding Why Metal-on-Metal Hip Arthroplasties Fail by Alister J. Hart, Ashley Matthies, Johann Henckel, Kevin Ilo, John Skinner, and Philip C. Noble.

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Presentation on theme: "Understanding Why Metal-on-Metal Hip Arthroplasties Fail by Alister J. Hart, Ashley Matthies, Johann Henckel, Kevin Ilo, John Skinner, and Philip C. Noble."— Presentation transcript:

1 Understanding Why Metal-on-Metal Hip Arthroplasties Fail by Alister J. Hart, Ashley Matthies, Johann Henckel, Kevin Ilo, John Skinner, and Philip C. Noble J Bone Joint Surg Am Volume 94(4):e22 February 15, 2012 ©2012 by The Journal of Bone and Joint Surgery, Inc.

2 Graph showing the rank order (expressed as a percentage) of each patient according to acetabular cup inclination angle. Alister J. Hart et al. J Bone Joint Surg Am 2012;94:e22 ©2012 by The Journal of Bone and Joint Surgery, Inc.

3 Graph showing the rank order (expressed as a percentage) of each patient according to acetabular cup version angle. Alister J. Hart et al. J Bone Joint Surg Am 2012;94:e22 ©2012 by The Journal of Bone and Joint Surgery, Inc.

4 Scatter plot showing the orientation of each acetabular cup. Alister J. Hart et al. J Bone Joint Surg Am 2012;94:e22 ©2012 by The Journal of Bone and Joint Surgery, Inc.

5 Graph showing the rank order (expressed as a percentage) of each patient according to the whole blood (WB) metal ion levels. Alister J. Hart et al. J Bone Joint Surg Am 2012;94:e22 ©2012 by The Journal of Bone and Joint Surgery, Inc.

6 Graph showing the rank order (expressed as a percentage) of each patient in the revision group according to component wear rate. Alister J. Hart et al. J Bone Joint Surg Am 2012;94:e22 ©2012 by The Journal of Bone and Joint Surgery, Inc.

7 Scatter plot showing the logarithms of the metal ion levels and wear rate for each patient who underwent revision because of unexplained hip pain. Alister J. Hart et al. J Bone Joint Surg Am 2012;94:e22 ©2012 by The Journal of Bone and Joint Surgery, Inc.

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