Magnetic resonance imaging findings in painful metal-on-metal hips: a prospective study.
Metal artifact reduction sequence magnetic resonance imaging findings are reported in a prospective series of 31 patients with unexplained painful metal-on-metal (MOM) hips. The abnormalities identified were fluid collection (20 patients), solid mass (2 patients), moderate to severe muscle atrophy (23 patients), and muscle edema (8 patients). In conclusion, soft tissue lesions and muscle atrophy appear to be prevalent in unexplained painful MOM hips. Metal artifact reduction sequence magnetic resonance imaging may be useful to diagnose and monitor at-risk hips but requires validation in well-functioning MOM hips before it can guide clinical decision making.
Imperial College London, London, UK.
Shiraz A
SA
Sabah
Adam W M
AW
Mitchell
Johann
J
Henckel
Ann
A
Sandison
John A
JA
Skinner
Alister J
AJ
Hart
D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D004487:Edema / Q000453:epidemiology / Q000209:etiology / Q000473:pathology*; D005260:Female; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008670:Metals; D008875:Middle Aged; D009133:Muscular Atrophy / Q000453:epidemiology / Q000209:etiology / Q000473:pathology*; D009135:Muscular Diseases / Q000453:epidemiology / Q000209:etiology / Q000473:pathology*; D015995:Prevalence; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012189:Retrospective Studies; D017695:Soft Tissue Injuries / Q000453:epidemiology / Q000209:etiology / Q000473:pathology*
D008670:Metals