Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
J Arthroplasty. 2013 Feb;28(2):279-285.e2. doi: 10.1016/j.arth.2012.06.005. Epub 2012 Jul 31.

Acetabular alignment and primary arc of motion for minus, skirtless, and skirted 28-, 32-, 36-, and 40-mm femoral heads.

Author information

  • 1Mount Sinai Hospital, Toronto, Ontario, Canada M5G 1X5.

Abstract

We examined the influence of acetabular cup alignment on the primary arc of motion (PAOM) for minus (-3.5), skirtless (+3.5), and skirted (+10.5) neck lengths with 28-, 32-, 36-, and 40-mm femoral heads. Total hip arthroplasty was performed in a pelvic saw bone model. The acetabulum was positioned in 30°/45°/60° abduction and 0°/15°/30° anteversion, respectively. The PAOM was determined using a digital inclinometer for each of the acetabular positions and 12 femoral heads mentioned above. Best PAOM was found in 45° abduction and 15° to 30° anteversion as well as 60° abduction and 0° anteversion. Combinations of excessive abduction and anteversion as well as horizontalization and retroversion resulted in the worst PAOM. Primary arc of motion is mainly determined by cup alignment even when using larger femoral heads.

Copyright © 2013 Elsevier Inc. All rights reserved.

PMID:
22854347
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk