TABLE 2

Infecting microorganisms in prosthetic joint infections in hips and knees

MicroorganismNo. of organisms found in culturea (n = 39)No. of organisms determined by 16S rRNA sequencing (n = 33)
TotalSubgroup
Polymicrobial115
Staphylococcus spp.1416
    S. aureus7
    S. epidermidis2
    S. lugdunensis3
    S. capitis1
CoNS, others1
Streptococcus spp.46
    Hemolytic streptococcus group Cb2
    Hemolytic streptococcus group Gb2
Enterococcus faecalis32
Escherichia coli2
Pseudomonas aeruginosa1
Salmonella serovar Dublin11
Propionibacterium spp.22
    P. acnes2
Finegoldia magna11
  • a Culturing showed positive results in 39 cases, and sequencing showed positive results in 33 cases. Due to the limited resolution in the 16S rRNA sequencing results, it was not possible to differentiate between species within the genera Staphylococcus, Streptococcus, and Propionibacterium.

  • b The hemolytic streptococci all were identified in culture as Streptococcus dysgalactiae.