ACR and AAHKS released “the Optimal Timing of Elective Hip or Knee Arthroplasty for Patients with Symptomatic Moderate to Severe Osteoarthritis or Osteonecrosis Who Have Failed Nonoperative Therapy.”
For selected patients unicompartmental (or "partial") knee arthroplasty (UKA) shortens the recovery time for two key measures of physical function, as compared with total knee arthroplasty.