ALB and congestive heart failure: For example, the modifiable frailty index (MFI), congestive heart failure, albumin, renal failure on dialysis, dependence for daily living, elderly, and body mass index (CARDE-B), Hospital Frailty Risk Score (HFRS), Age Adjusted Modified Frailty Index (aamFI), and five-factor Modified Frailty Index (mFI-5) are all proven predictors of poor outcomes after revision arthroplasty (Table 1).