Revision total hip arthroplasty in hip joints with metallosis: a single-center experience with 31 cases.
Clinical and radiographic findings of metallosis in relation to the clinical outcome of revision total hip arthroplasty were analyzed for 31 hips. Causes of metallosis were dissociation of polyethylene liner in 24 hips, catastrophic wear in 6, and the screw used for stem fixation in 1. Metallosis was grade I in 12 hips, grade II in 7, and grade III in 12. Osteolysis around the acetabular cup was observed in 24 (77.4%) of 31 hips. At the time of final follow-up evaluation, none of the hips showed osteolysis, acetabular cup migration, or any change in inclination. Although metallosis could not be completely eradicated in severe cases, the clinical outcome for these hips was favorable. This study demonstrates that metallosis frequently causes osteolysis and that complete elimination of it is not a prerequisite for the success of revision total hip arthroplasty.
Chang
Jun-Dong
JD
Department of Orthopaedic Surgery, Hangang Sacred Heart Hospital, Hallym University College of Medicine, Youngdungpo-gu, Seoul, Republic of Korea.
Lee
Sang-Soo
SS
Hur
Mina
M
Seo
Eun-Min
EM
Chung
Yung-Khee
YK
Lee
Chang-Ju
CJ
D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000473:pathology*; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008670:Metals; D008875:Middle Aged; D010014:Osteolysis / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation
D008670:Metals