Inclusion Criteria:  Have a primary (first) total knee replacement scheduled in 8 weeks or more. ≥60 years of age Speak English Have access to the internet and a computer Able to travel to New York City (Upper East Side) for in-person data collection visits Low functional status defined as a Knee Injury and Osteoarthritis Outcome Score (KOOS) <45 We will prioritize the recruitment of subjects with low socioeconomic status defined as being a beneficiary of Medicaid or no insurance and an underrepresented racial/ethnic group (Hispanic/Black). Have at least one of these two factors: High level of anxiety as defined by the Generalized Anxiety Disorder Assessment (GAD-7) instrument (score ≥10) OR Depression, as assessed by Patient Health Questionnaire depression scale (PHQ-8) (score ≥ 10).  Exclusion Criteria:  Non-English speakers Planned total knee replacement is a result of a septic joint or revision (implant malfunction) Unable to exercise (e.g., bed bound) Have had contralateral total knee replacement or other joint replacement surgery (hip, shoulder) Have rheumatoid arthritis or other connective tissue disease: Lupus, ankylosing spondylitis, psoriatic arthritis, scleroderma, infectious arthritis, polymyalgia rheumatica.