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Whole blood metal Ion concentrations in correlation with activity level in three different metal-on-metal bearings

Christophe Pattyn (UGent) , Sophie Lauwagie (UGent) and René Verdonk (UGent)
(2011) JOURNAL OF ARTHROPLASTY. 26(1). p.58-64
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Abstract
Seventy consecutive osteoarthritis patients younger than 65 years undergoing a hip arthroplasty were included. Three different metal bearings were used (2 different resurfacing systems and one 28-mm metal bearing) and compared with a ceramic control group. Whole blood cobalt and chromium levels were analyzed preoperatively, at 3 months, 6 months, 1 year, and 2 years. Patients with steep cups (abduction >55 degrees) were excluded. No significant differences in functional scores and activity level were found between either groups. Ion levels were significantly lower with one type of resurfacing. No correlation was found between ion and activity level. In conclusion, although the current second-generation metal bearings may show differences in ion release, more attention should be paid to the correlation between ion release and implant positioning.
Keywords
hip resurfacing, metal-on-metal, hip arthroplasty, metal ion release, activity level, TOTAL HIP-REPLACEMENT, HIGH-CARBON CONTENT, IN-VIVO, COBALT, ARTHROPLASTY, CHROMIUM, INCLINATION, WEAR

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Citation

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Chicago
Pattyn, Christophe, Sophie Lauwagie, and René Verdonk. 2011. “Whole Blood Metal Ion Concentrations in Correlation with Activity Level in Three Different Metal-on-metal Bearings.” Journal of Arthroplasty 26 (1): 58–64.
APA
Pattyn, C., Lauwagie, S., & Verdonk, R. (2011). Whole blood metal Ion concentrations in correlation with activity level in three different metal-on-metal bearings. JOURNAL OF ARTHROPLASTY, 26(1), 58–64.
Vancouver
1.
Pattyn C, Lauwagie S, Verdonk R. Whole blood metal Ion concentrations in correlation with activity level in three different metal-on-metal bearings. JOURNAL OF ARTHROPLASTY. 2011;26(1):58–64.
MLA
Pattyn, Christophe, Sophie Lauwagie, and René Verdonk. “Whole Blood Metal Ion Concentrations in Correlation with Activity Level in Three Different Metal-on-metal Bearings.” JOURNAL OF ARTHROPLASTY 26.1 (2011): 58–64. Print.
@article{1191664,
  abstract     = {Seventy consecutive osteoarthritis patients younger than 65 years undergoing a hip arthroplasty were included. Three different metal bearings were used (2 different resurfacing systems and one 28-mm metal bearing) and compared with a ceramic control group. Whole blood cobalt and chromium levels were analyzed preoperatively, at 3 months, 6 months, 1 year, and 2 years. Patients with steep cups (abduction {\textrangle}55 degrees) were excluded. No significant differences in functional scores and activity level were found between either groups. Ion levels were significantly lower with one type of resurfacing. No correlation was found between ion and activity level. In conclusion, although the current second-generation metal bearings may show differences in ion release, more attention should be paid to the correlation between ion release and implant positioning.},
  author       = {Pattyn, Christophe and Lauwagie, Sophie and Verdonk, Ren{\'e}},
  issn         = {0883-5403},
  journal      = {JOURNAL OF ARTHROPLASTY},
  keyword      = {hip resurfacing,metal-on-metal,hip arthroplasty,metal ion release,activity level,TOTAL HIP-REPLACEMENT,HIGH-CARBON CONTENT,IN-VIVO,COBALT,ARTHROPLASTY,CHROMIUM,INCLINATION,WEAR},
  language     = {eng},
  number       = {1},
  pages        = {58--64},
  title        = {Whole blood metal Ion concentrations in correlation with activity level in three different metal-on-metal bearings},
  url          = {http://dx.doi.org/10.1016/j.arth.2009.11.007},
  volume       = {26},
  year         = {2011},
}

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