Hansen EN, et al. - Using two large databases, researchers quantified the risk of complications, re-operation/revision, hospital re-admission for any reason, and mortality of knee arthroplasty patients in the US patient population. Compared with unicondylar knee arthroplasty (UKA), complication rates were significantly higher for TKA patients, including wound complication, pulmonary embolism, stiffness, peri-prosthetic joint infection, myocardial infarction, re-admission, and death. Investigators found that patients with UKA experience fewer postoperative complications and re-admissions than patients with TKA. However, with up to 10 years of follow-up, patients undergoing UKA have a higher rate of reoperation and revision. Age, as well as surgeon and hospital volume, appear to have a significant impact on implant survival while gender has no relationship.