Publications by authors named "Patrick Yep"
Background: Infection following total knee arthroplasty (TKA) remains a challenging clinical problem. Using American Joint Replacement Registry data, this study examined factors related to the incidence and timing of infection.
Methods: Primary TKAs performed from January 2012 through December 2018 among patients ≥65 years of age at surgery were queried from the American Joint Replacement Registry and merged with Medicare data to enhance capture of revisions for infection.
Article Synopsis
- Patients with a history of lumbar spine fusion (LSF) face higher dislocation risks after total hip arthroplasty (THA), prompting a study to analyze dislocation rates between dual mobility (DM) and non-DM constructs.
- A total of 15,572 patients were evaluated, revealing that the 90-day dislocation rates were significantly lower for DM constructs (0.68%) compared to non-DM constructs (1.17%).
- The findings suggest that utilizing DM constructs in high-risk patients with stiff spines can help reduce the likelihood of hip dislocation after THA, indicating a potential benefit for these individuals.
Background: Mobile-bearing (MB) total knee arthroplasty (TKA) may reduce wear and improve patellar tracking but may increase revision risk due to tibial component design, balance complexity, and bearing dislocation. We utilized the American Joint Replacement Registry to examine risk of revision with MB compared to fixed-bearing (FB) designs.
Methods: An analysis of primary TKA in patients over 65 years was performed with American Joint Replacement Registry data linked to Centers for Medicare and Medicaid Services data from 2012 to 2019.
Background: Highly cross-linked polyethylene (HXLPE) can improve wear properties in TKA, but it can also lead to decreased mechanical properties. Antioxidants were added to HXLPE to improve its mechanical properties while retaining the improved wear characteristics. However, it remains unclear whether these modifications to conventional polytheylene used in TKA have resulted in a change in the revision risk.
View Article and Find Full Text PDFBackground: Polyethylene bearing design may influence the risk of revision after total knee arthroplasty (TKA). Previous investigations from outside of the United States have suggested the potential for an increased risk of all-cause revision and revision for infection with the use of posterior-stabilized bearings. We examine the risk of revision based on the polyethylene bearing design selection for primary TKA.
View Article and Find Full Text PDFBackground: Advances in polyethylene bearing characteristics have led to various options for total knee arthroplasty. We examine trends in use of polyethylene in the United States.
Methods: An analysis of American Joint Replacement Registry data from 2012 to 2019 for primary total knee arthroplasty procedures was conducted.
Background: Revision total hip arthroplasty (revTHA) is associated with higher rates of complications and greater costs than primary procedures. The aim of this study is to evaluate the effect of hospital size, teaching status, and indication for revTHA, on migration patterns in patients older than 65 years old.
Methods: All THAs and revTHAs reported to the American Joint Replacement Registry from 2012 to 2018 were included and merged with the Centers for Medicare and Medicaid Services database.
Objectives: The Center for Medicare & Medicaid Services (CMS) is actively testing bundled payments models. This study sought to identify relevant details for 90-day postdischarge emergency department (ED) visits of Medicare beneficiaries following total joint replacement (TJR) surgery meeting eligibility for a CMS bundled payment program.
Methods: The CMS research identifiable file for the State of Texas for 2011-2012 was used to identify patients who underwent TJR.