The AAOS Registry Analytics Institute® (RAI) project pipeline is detailed below. This list encompasses the topics currently in the RAI project queue, undergoing data analysis, and awaiting publication. To facilitate efficient project management and avoid redundancy, we request that all prospective submitters carefully review the following information before proposing new RAI projects.

Ongoing Projects (Alphabetically Ordered)

Please note that ongoing projects may be at any stage in the pipeline, from in the analysis queue to awaiting manuscript publication or presentation acceptance.

• A Comparison of Aseptic Loosening and All-Cause Revision Between Anatomic Taper-Slip and Double versus Triple-Tapered Femoral Stems in Cemented Primary Total Hip Arthroplasty: An American Joint Replacement Registry Analysis
  
  
• Bearing Constraint Level and Associated Risk of Revision after Revision Total Knee Arthroplasty: An Analysis from the American Joint Replacement Registry
  
  
• Comparison between Robotic Systems for Total Hip Arthroplasty: an Analysis using the AAOS American Joint Replacement Registry
  
  
• Comparison between Robotic Systems for Total Knee Arthroplasty: an Analysis using the AAOS American Joint Replacement Registry
  
  
• Does Cement Viscosity or Addition of Antibiotics Influence Implant Survivorship after Total Hip and Knee Arthroplasty? An Analysis from the American Joint Replacement Registry (AJRR)
• Does Fluted Tapered Femoral Stem Design Influence Revision Risk in Revision Total Hip Arthroplasty?
  
  
• Examining Survivorship of Large Femoral Heads with Thin Polyethylene Liners: An Analysis from the American Joint Replacement Registry
  
  
• Factors affecting community penetration and patient access to robotic total knee arthroplasty
  
  
• Impact of Gender Discordance between Surgeon and Patient on Outcomes following Total Hip and Knee Arthroplasty
  
  
• Impact of Institutional Surgical Volume on the Operative Learning Curve for Robotic Assisted Total Joint Arthroplasty: An Analysis from the American Joint Replacement Registry
  
  
• Is inflammatory arthritis an absolute indication for patellar resurfacing in total knee arthroplasty?
  
  
• Is Robotic-assisted Total Hip Arthroplasty Associated with Decreased Rates of Two-year Implant Failure? An analysis of the American Joint Replacement Registry
  
  
• Leveraging PROs to Predict Outcomes in Total Joint Arthroplasty Patients
  
  
• Regional trends of patellar resurfacing in primary TKA and subsequent revision rates
  
  
• Revision surgery in Varus-Valgus Constrained Primary TKA: comparison of stemmed and non-stemmed implants
  
  
• Substantial Clinical Benefit and Minimal Clinically Important Difference Following Primary Total Knee Arthroplasty: An Analysis Using the American Joint Replacement Registry (2018–2023)
  
  
• Survivorship of Large Femoral Heads with and without Titanium Sleeves in Primary Total Hip Arthroplasty: An Analysis from the American Joint Replacement Registry
  
  
• Survivorship of Revision Total Knee Arthroplasty Based on Implant Design and Fixation Construct: Analysis from the American Joint Replacement Registry (AJRR)
  
  
• The Area Deprivation Index and Revision Rates for Perioperative Joint Infection Following Primary Total Knee Arthroplasty
  
  
• The national outcomes of the first revision THA
  
  
• Trends in dual mobility implants and dislocation rates for total hip arthroplasty after femoral neck fracture
  
  
• Use of Prophylactic Cerclage Cables to Mitigate Risk of Periprosthetic Fracture and Revision in Cementless Femoral Stem Fixation for Femoral Neck Fracture
  
  
• Variation in the Use of Cemented vs Uncemented Hemiarthroplasty in the United States
  
  

Last Updated 6/5/2025