Table 4.

Diagnosis of periprosthetic joint infection in patients with negative cultures

Patient number	Age (years)	Sex	BMI (kg/m2)	Comorbidities	Prior hip surgery	Diagnosis of periprosthetic joint infection	Outcome
4	69	Male	39	Smoker, hypertension, diabetes, hyperlipidemia, Sleep apnea	Primary metal-on-metal THA	Elevated ESR, elevated CRP, elevated synovial WBC, elevated synovial PMN%, gross purulence	Success
8	73	Female	33	Hypertension, heart murmur, hyperlipidemia, history of acute renal insufficiency (resolved)	Primary metal-on-polyethylene THA	Elevated ESR, elevated CRP, elevated synovial WBC, elevated synovial PMN%, gross purulence	Success
12	45	Male	31	Anxiety, shortness of breath with mild exertion	Second revision THA	Elevated ESR, elevated CRP, elevated synovial WBC, elevated synovial PMN%, gross purulence	Success
14	72	Male	32	History of peptic ulcers, hypertension, gastroesophageal reflux disease, hyperlipidemia, sleep apnea	Primary metal-on-metal THA	Elevated ESR, elevated CRP, elevated synovial WBC, elevated synovial PMN%, gross purulence	Success

BMI = body mass index; ESR = erythrocyte sedimentation rate; CRP = C-reactive protein; WBC = white blood cell count; PMN% = percentage of polymorphonuclear lymphocytes.