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Factors affecting bony impingement in hip arthroplasty.

Abstract
Computer modeling of 10 patients' computed tomographic scans was used to study the variables affecting hip arthroplasty range of motion before bony impingement (ROMBI) including acetabular offset and height, femoral offset, height and anteversion, and osteophyte removal. The ROMBI was compared with the ROM before component impingement and the native hip ROM. The ROMBI decreased with decreased total offset and limb shortening. Acetabular offset and height had a greater effect on ROMBI than femoral offset and height. The ROMBI lost with decreased acetabular offset was not fully recoverable with an increase in femoral offset or osteophyte removal. Bony impingement increased and component impingement decreased with decreased acetabular offset and increased head diameter.
AuthorsWilliam B Kurtz, Timo M Ecker, William M Reichmann, Stephen B Murphy
JournalThe Journal of arthroplasty (J Arthroplasty) Vol. 25 Issue 4 Pg. 624-34.e1-2 (Jun 2010) ISSN: 1532-8406 [Electronic] United States
PMID19559561 (Publication Type: Journal Article)
CopyrightCopyright 2010 Elsevier Inc. All rights reserved.
Topics
  • Acetabulum (surgery)
  • Algorithms
  • Arthroplasty, Replacement, Hip (adverse effects)
  • Computer Simulation
  • Female
  • Femur Head (surgery)
  • Hip Prosthesis (adverse effects)
  • Humans
  • Male
  • Middle Aged
  • Osteoarthritis, Hip (complications, diagnostic imaging, surgery)
  • Osteophyte (diagnostic imaging, etiology, surgery)
  • Range of Motion, Articular
  • Tomography, X-Ray Computed

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