Longitudinal Magnetic Resonance Imaging of Pseudotumors Following Metal-on-Metal Total Hip Arthroplasty

被引：24
作者：
Hasegawa, Masahiro [1 ]
Miyamoto, Noriki [1 ]
Miyazaki, Shinichi [1 ]
Wakabayashi, Hiroki [1 ]
Sudo, Akihiro [1 ]
机构：
[1] Mie Univ, Grad Sch Med, Dept Orthopaed Surg, Tsu, Mie 5148507, Japan
来源：
JOURNAL OF ARTHROPLASTY | 2014年 / 29卷 / 12期
基金：
日本学术振兴会;
关键词：
total hip arthroplasty; metal-on-metal; pseudotumor; magnetic resonance imaging; complications; ASYMPTOMATIC PATIENTS; PREVALENCE; BEARINGS; FAILURE; COHORT; COMMON;
D O I：
10.1016/j.arth.2014.05.006
中图分类号：
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学（修复外科学）];
学科分类号：
摘要：
The purpose of the study was to determine the natural history of pseudotumors following metal-on-metal total hip arthroplasty (THA) using magnetic resonance imaging (MRI). Initial MRI was conducted at a mean of 36 months postoperatively. Follow-up MRI was performed at a mean of 20 months after the detection of 24 asymptomatic pseudotumors. Pseudotumor size was determined on MRI. The mean pseudotumor size changed from 729 mm(2) to 877 mm(2). Pseudotumors increased in size in eight and decreased in six. Ten hips showed no changes. The bigger the pseudotumor size, the more likely the size would increase. In conclusion, pseudotumors frequently change in size. A single MRI study in the clinical decision-making process should be avoided and a longitudinal study should be performed. (C) 2014 Elsevier Inc. All rights reserved.
引用
收藏
页码：2236 / 2238
页数：3
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