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Blood cobalt ion level in patients with different sizes of cobalt/chrome femoral head with the Accolade TMZF stem.
Ishii, Seiya; Homma, Yasuhiro; Matsukawa, Takehisa; Baba, Tomonori; Kaneko, Kazuo; Ishijima, Muneaki.
Afiliação
  • Ishii S; Department of Orthopaedic Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
  • Homma Y; Department of Orthopaedic Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan. yhomma@juntendo.ac.jp.
  • Matsukawa T; Department of Epidemiology and Environmental Health, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
  • Baba T; Department of Forensic Medicine, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
  • Kaneko K; Department of Orthopaedic Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
  • Ishijima M; Department of Orthopaedic Surgery, Juntendo University Faculty of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan.
Int Orthop ; 46(10): 2205-2212, 2022 10.
Article em En | MEDLINE | ID: mdl-35840813
ABSTRACT

BACKGROUND:

Corrosion of stem-cobalt/chromium (Co/Cr) head interface and subsequent systemic Co ion complication have been a clinical concern after total hip arthroplasty (THA). The aim of this study is to investigate correlation between type of femoral head and blood Co ion level.

METHODS:

One hundred four patients with THA using accolade TMZF and Co/Cr femoral head (32-mm; 55 cases, 36-mm; 20 cases, dual mobility system (DM) with 22.2 or 28-mm inner head; 29 cases) participated in this study, and blood Co ion concentration test was performed in patients a minimum of four years after THA.

RESULTS:

DM group was significantly older than 32-mm and 36-mm group (DM 73.9 ± 4.6, 32-mm 63.3 ± 8.5, 36-mm 66.8 ± 10.5). The median (interquartile range) blood Co concentration of each group was 32-mm group 0.26 µg/L (0.69), 36-mm group; 0.21 µg/L (0.30); and DM group 0.21 µg/L (0.13). There was a significant difference of Co concentration between DM and 32-mm group (p = 0.023). Abnormal values of the blood Co concentration (> 1 µg/L) were observed in the 32-mm group; 12 cases (21.8%), 36-mm group; 2 cases (10.0%); and DM group; 0 case (0%) (p = 0.018).

CONCLUSIONS:

Co blood concentration differed among the different sizes of Co/Cr femoral head. THA using DM is a safe option with low risk of complication from cobalt ion if it is used for elderly patients.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Cobalto / Prótese de Quadril Idioma: En Ano de publicação: 2022 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Cobalto / Prótese de Quadril Idioma: En Ano de publicação: 2022 Tipo de documento: Article