Document Detail

Significance of C-reactive protein in osteoarthritis and total knee arthroplasty outcomes.
MedLine Citation:
PMID:  23024709     Owner:  NLM     Status:  PubMed-not-MEDLINE    
BACKGROUND: The relationship between systemic inflammatory processes to total knee arthroplasty (TKA) outcomes remains unclear. This study investigates the relationship between serum high-sensitivity C-reactive protein (hs-CRP) and functional outcomes post-TKA.
METHODS: A total of 31 patients with osteoarthritis (OA) who underwent TKA were enrolled in the study; 15 with hs-CRP ≤1.0 mg/l (low hs-CRP group) and 16 subjects with hs-CRP ≥4.0 mg/l (high hs-CRP group). During surgery, synovium and bone sections were sequestered, formalin-fixed, and paraffin embedded for slide preparation. Tissue sections were stained with hematoxylin and eosin and analyzed using a light microscope. A total of 12 cytokines were measured in synovial fluid samples from the knee joint at time of surgery and analyzed using the Luminex Multi-Analyte Profiling System. Relationships between cytokines and hs-CRP were assessed using Spearman correlation coefficients. Student's t-tests were used to compare Short Form health outcomes survey (SF-12) health outcomes between high and low hs-CRP, and presurgical and postsurgical visits.
RESULTS: Mean ± standard deviation (SD) baseline and 1-year hs-CRP values for the low hs-CRP group were 0.55 ± 0.23 mg/l and 1.22 ± 1.32 mg/l, respectively (n = 15; p = 0.051) and for the high hs-CRP group were 7.86 ± 5.98 mg/l and 14.11 ± 38.9 mg/l, respectively (n = 13; p = 0.54). Lymphocytes were present in 10 synovium and one bone sample (all but one from high hs-CRP group). Interleukin (IL)-5 and IL-10 were significantly correlated with hs-CRP (p = 0.0137 and p = 0.0029, respectively). The low hs-CRP group exhibited significant improvement in the physical component of SF-12 at 6 and 12 months compared with baseline, whereas the high hs-CRP group exhibited significant improvement only at 6 months. Body mass index (BMI) had a significant positive correlation with presurgical hs-CRP.
CONCLUSIONS: The results of this study provide support for inflammatory mechanisms contributing to the OA progression, with hs-CRP being a possible predictive variable, combined with BMI and other comorbidities, of post-TKA function.
Jessica W Smith; Thomas B Martins; Evelyn Gopez; Troy Johnson; Harry R Hill; Thomas D Rosenberg
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Therapeutic advances in musculoskeletal disease     Volume:  4     ISSN:  1759-7218     ISO Abbreviation:  Ther Adv Musculoskelet Dis     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-01     Completed Date:  2012-10-02     Revised Date:  2013-05-30    
Medline Journal Info:
Nlm Unique ID:  101517322     Medline TA:  Ther Adv Musculoskelet Dis     Country:  England    
Other Details:
Languages:  eng     Pagination:  315-25     Citation Subset:  -    
Department of Bioengineering, University of Utah, 3223 Sorenson Molecular Biotechnology Building, Salt Lake City, UT 84112, USA.
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