Dr. David Dalury’s Tips and Tricks for Unicompartmental Knee Arthroplasty

    David F. Dalury, MD, says his happiest knee patients are the ones who undergo a unicompartmental knee arthroplasty (UKA).

    But UKA is much less common than total knee arthroplasty: 3.2% of knee arthroplasty procedures reported to the American Joint Replacement Registry (AJRR) between 2012 and 2017 were UKAs, and the data showed a downward trend during that period. Further, only 15% of surgeons who submitted cases to AJRR in 2017 performed UKAs. [1]

    To help bridge the gap in knowledge of and experience with UKA, Dr. Dalury, from Towson Orthopaedic Associates in Towson, Maryland, shared with attendees at ICJR’s Winter Hip & Knee Course the tried-and-true techniques he relies on for surgical management of his UKA patients.

    Patient selection is important to the success of UKA, Dr. Dalury said: Not every patient is the right candidate for the procedure. Here are some of his selection criteria:

    • Patients have to have realistic expectations. The procedure isn’t going to give them the knees of a 20-something.
    • Don’t operate too soon. Dr. Dalury waits until the patient has end-stage arthrosis, as evidenced by bone-on-bone contact.
    • The patient should have a correctable deformity of less than 10° to 15° for the best results.
    • Age, body mass index, and patellofemoral condition are less important to the outcome than previously thought, Dr. Dalury said.

    Click the image above to watch Dr. Dalury’s presentation and learn his tips, tricks, and techniques in the following areas:

    • Exposure
    • Tibial and femoral cuts
    • Femoral alignment
    • Cement technique
    • Implant alignment

    Disclosures: Dr. Dalury has disclosed that he receives royalties from and is a paid consultant for DePuy Synthes.


    1. Annual Report 2018: Fifth Annual AJRR Report on Hip and Knee Arthroplasty Data. American Joint Replacement Registry: Rosemont, Illinois, 2018.