alexa Effects of Spinopelvic Balance on Acetabular Version in Total Hip Arthroplasty
ISSN: 2161-0533

Orthopedic & Muscular System: Current Research
Open Access

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Effects of Spinopelvic Balance on Acetabular Version in Total Hip Arthroplasty

Won Yong Shon*

Orthopedic Surgery, Korea University, South Korea

*Corresponding Author:
Won Yong Shon
Orthopedic Surgery
Korea University, South Korea
Tel/Fax: 412-359-8850
E-mail: [email protected]

Received Date: January 17, 2014; Accepted Date: March 20, 2014; Published Date: March 26, 2014

Citation: Won Yong Shon (2014) Effects of Spinopelvic Balance on Acetabular Version in Total Hip Arthroplasty. Orthop Muscul Syst 3: 146. doi: 10.4172/2161-0533.1000146

Copyright: © 2014 Shon WY, This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



The orientation of acetabular component is influenced by pelvic tilt, body position and individual variation in pelvic
parameters. Most adverse events attribute to improper positioning of the acetabular component in the functional
position. There is evidence that the orientation of the pelvis changes from the supine to standing position,
consequently changing the orientation of acetabular cup version. This article substantiates the influence of pelvic tilt,
incurred from a sagittal deformity of spine, on the dynamic orientation of the acetabular cup which was positioned in
accordance with the anatomic landmarks alone. If the reference is only the bony architecture and the dynamic
positions of the pelvis are not taken into account, improper functional orientation of the acetabular cup can result in
sitting and standing positions. These can induce instability even in anatomically appropriately oriented acetabular
component. The sagittal position of pelvis being a key factor in impingement and dislocation after total hip
arthroplasty, its tilting affects the position of acetabular component in the sagittal plane of the body as compared
with its anatomic position in the pelvis. Therefore we suggest a preoperative lateral view of spine-pelvis, in upright
and supine position for evaluation of a corrective adaptation of the acetabular cup accordingly with pelvic balance.

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