AS=Academic surgeon; CS=Community surgeon; ID=Infectious disease specialist; MSIS=Musculoskeletal Infection Society; AD=Alpha-defensin; ESR=Erythrocyte sedimentation rate; CRP=C-reactive protein; SF-WBC=Synovial fluid white blood cells; SF-PMN%=synovial fluid polymorphonuclear cell %. This evidence concerns the gene CRP and infectious disease.