Clinical Publication Review: Day of Surgery Discharge after Unicompartmental Knee Arthroplasty: An Effective Perioperative Pathway


This recent study, published in the Journal of Arthoplasty by Gondusky et al1 reported that discharge on the same day as PKA allows for "efficient care of the appropriately selected patient" and a high level of patient satisfaction.

160 consecutive patients, with an average age of 65, were successfully discharged on the DOS (Day of Surgery) between January 2003 and February 2013. The majority (73.1%) of patients received an Oxford Partial Knee implant.

Important steps in the DOS discharge protocol include (but are not limited to):

  • Preoperative and postoperative patient education through counselling
  • A very simple perioperative pathway
  • Detailed instructions in a patient handbook
  • Strict patient selection criteria: patients must meet specific health criteria and are not only capable of complying with specific DOS discharge protocols, but also with PKA in general

This study shows that, when patients are carefully selected, DOS discharge after PKA allows for "efficient care of the appropriately selected patient" by using a very simple perioperative pathway. The following results were reported:

  • A low rate of perioperative complications (5 out of 160 patients)
  • High patient satisfaction: 92.8% were very or extremely satisfied at final follow up; average 2 years

Another study also found that significant cost savings can be achieved with DOS discharge ($7,000) versus a 3-4 day hospital stay (average cost of $16,000)2.

Not all partial knees in this study were Oxford Partial Knees. Biomet does not practice medicine or recommend any particular orthopaedic implant or a specific perioperative pathway for a patient. The surgeon who performs any implant procedure is responsible for determining the appropriate treatment plan and utilizing the appropriate techniques for implanting prosthesis in each individual patient.
  1. Gondusky JS, et al. Day of Surgery Discharge after Unicompartmental Knee Arthroplasty An Effective Perioperative Pathway. The Journal of Arthroplasty. 2014: Volume 29, Issue 3:516–519.
  2. Repicci JA, Eberle RW. Minimally invasive surgical technique for unicondylar knee arthroplasty. J South Orthop Assoc 1998;9(1):20