Comorbidity Burden Contributing to Racial Disparities in Outpatient Versus Inpatient Total Knee Arthroplasty.

Differences in indications for outpatient TKA between races/ethnicities seem to be highly associated with comorbidity burden and preoperative baseline differences, not race alone. Appropriate patient optimization for either outpatient or inpatient TKA may reduce disparities between groups in either care setting.