TY - JOUR
T1 - Diagnosis of periprosthetic joint infection after unicompartmental knee arthroplasty
AU - Schwartz, Adam J.
AU - Wetters, Nathan
AU - Moric, Mario
AU - Berend, Keith R.
AU - Lombardi, Adolph V.
AU - Gehrke, Thorsten
AU - Kendoff, Daniel
AU - Sierra, Rafael J.
AU - Kassel, Cale
AU - Berend, Michael E.
AU - Valle, Craig J.Della
PY - 2012/9
Y1 - 2012/9
N2 - The purpose of this multicenter study is to determine the utility of the erythrocyte sedimentation rate, C-reactive protein, and synovial fluid white blood cell (WBC) count and differential for evaluating periprosthetic joint infection (PJI) in patients with a failed unicompartmental knee arthroplasty (UKA). A total of 259 patients undergoing revision of a failed UKA were reviewed; 28 (10.8%) met the study criteria for PJI. The optimal cutoff values were 27 mm/h for the erythrocyte sedimentation rate, 14 mg/L for the C-reactive protein, 6200/. μL for the synovial fluid WBC count, and 60% for the differential. These tests are useful for diagnosing PJI after UKA with optimal cutoff values that are similar to those used for total knee arthroplasty; however, the optimal synovial WBC count was found to be somewhat higher, which may be related to the unresurfaced compartments. In addition, we found that nearly half of patients had suboptimal evaluation for PJI.
AB - The purpose of this multicenter study is to determine the utility of the erythrocyte sedimentation rate, C-reactive protein, and synovial fluid white blood cell (WBC) count and differential for evaluating periprosthetic joint infection (PJI) in patients with a failed unicompartmental knee arthroplasty (UKA). A total of 259 patients undergoing revision of a failed UKA were reviewed; 28 (10.8%) met the study criteria for PJI. The optimal cutoff values were 27 mm/h for the erythrocyte sedimentation rate, 14 mg/L for the C-reactive protein, 6200/. μL for the synovial fluid WBC count, and 60% for the differential. These tests are useful for diagnosing PJI after UKA with optimal cutoff values that are similar to those used for total knee arthroplasty; however, the optimal synovial WBC count was found to be somewhat higher, which may be related to the unresurfaced compartments. In addition, we found that nearly half of patients had suboptimal evaluation for PJI.
KW - Periprosthetic joint infection
KW - Total joint arthroplasty
KW - Unicompartmental knee arthroplasty
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U2 - 10.1016/j.arth.2012.03.033
DO - 10.1016/j.arth.2012.03.033
M3 - Article
C2 - 22841381
AN - SCOPUS:84865354689
SN - 0883-5403
VL - 27
SP - 46
EP - 50
JO - Journal of Arthroplasty
JF - Journal of Arthroplasty
IS - 8 SUPPL.
ER -