Magnetic Resonance Imaging Features of Preserved vs Divided and Repaired Piriformis During Total Hip Arthroplasty

2012 ◽  
Vol 27 (4) ◽  
pp. 551-558 ◽  
Author(s):  
Riaz J.K. Khan ◽  
Li On Lam ◽  
William Breidahl ◽  
William G. Blakeney
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Imaging Features ◽  
Resonance Imaging ◽  
Total Hip

The Utility of MRI With Multiacquisition Variable-Resonance Image Combination (MAVRIC) in Diagnosing Deep Total Hip Arthroplasty Infection

2021 ◽  
pp. 155633162110092
Author(s):  
Ashley E. Levack ◽  
Chelsea Koch ◽  
Harold G. Moore ◽  
Michael B. Cross
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
False Positive ◽  
False Positive Rate ◽  
Positive Finding ◽  
Resonance Imaging ◽  
Total Hip ◽  
Positive Rate

Background: The 2010 American Academy of Orthopaedic Surgeons Clinical Practice Guidelines report insufficient evidence to address the diagnostic efficacy of magnetic resonance imaging (MRI) for periprosthetic joint infection (PJI). Questions/Purposes: The purpose of this study was to determine the utility of MRI with multiacquisition variable-resonance image combination (MAVRIC) metal artifact suppression techniques in diagnosing PJI in the setting of total hip arthroplasty (THA). Methods: Multiacquisition variable-resonance image combination MRIs obtained of THAs between November 2012 and November 2016 were queried. Radiology reports were classified as positive (suspicious for infection), negative (no features of infection), or inconclusive (infection cannot be excluded or correlation with aspiration suggested if clinically concerned). Chart review identified cases of deep PJI according to the modified Musculoskeletal Infection Society criteria. Results: Of 2156 MRIs of THAs included, MRI was concerning for infection in 1.8% (n = 39), inconclusive in 1.2% (n = 26), and negative in 97.0% (n = 2091). Deep PJI was identified in 53 (2.5%) patients, 30 of whom (56.6%) had conclusively positive finding on MRI (false-negative rate: 43.4%, sensitivity: 56.6%). Of 2103 aseptic THAs, only 9 (0.4%) MRIs were read as suspicious for infection (false-positive rate: 0.4%; specificity: 99.6%). Conclusion: Magnetic resonance imaging with MAVRIC is a highly specific test for PJI with a low false-positive rate. This indicates that when clinicians are provided with an MRI that unexpectedly suggests infection, a formal evaluation for infection is indicated. In patients with otherwise equivocal diagnostic findings, MRI may help confirm, but not refute, a diagnosis of PJI. Prospective study with more experienced image reviewers may further support the use of MRI in PJI.

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

2014 ◽  
Vol 29 (12) ◽  
pp. 2236-2238 ◽  
Author(s):  
Masahiro Hasegawa ◽  
Noriki Miyamoto ◽  
Shinichi Miyazaki ◽  
Hiroki Wakabayashi ◽  
Akihiro Sudo
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Resonance Imaging ◽  
Total Hip ◽  
Metal On Metal

MAGNETIC RESONANCE IMAGING AFTER TOTAL HIP ARTHROPLASTY

2004 ◽  
Vol 86 (9) ◽  
pp. 1947-1954 ◽  
Author(s):  
HOLLIS G. POTTER ◽  
BRYAN J. NESTOR ◽  
CAROLYN M. SOFKA ◽  
STEPHANIE T. HO ◽  
LANCE E. PETERS ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Resonance Imaging ◽  
Total Hip

Magnetic Resonance Imaging in the Diagnosis and Management of Hip Pain After Total Hip Arthroplasty

2009 ◽  
Vol 24 (5) ◽  
pp. 661-667 ◽  
Author(s):  
H. John Cooper ◽  
Amar S. Ranawat ◽  
Hollis G. Potter ◽  
Li Foong Foo ◽  
Shari T. Jawetz ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Total Hip Arthroplasty ◽  
Hip Arthroplasty ◽  
Hip Pain ◽  
Resonance Imaging ◽  
Total Hip ◽  
Diagnosis And Management
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