The surgeons at Jordan-Young Institute are active participants in multiple trials.


  • Zimmer Knee Creations Subchondroplasty Observational Cohort Follow-Up Study. -Sponsor: Zimmer; Investigator: Samuel P. Robinson 2015-current


  • The Efficacy of Intra-Articular Corticosteroid Injections for Adhesive Capsulitis Following Capsular Release: A prospective, Double-Blinded, Randomized Controlled Trial. -Sponsor: Investigator; Investigator: Kevin Bonner 2013-current


  • Outcomes of Knee Arthroplasty Using a DePuy Attune Primary Knee System. -Sponsor: DePuy; Investigator: James Dowd 2012-current


  • Regenerex Tibial Tray Multi-Center Data Collection. – Sponsor: Biomet; Investigator: Louis Jordan 2011 – current


  • Zimmer Knee Registry – Multicenter Registry of all Commerically available Zimmer Knee Components. – Sponsor: Zimmer; Investigator: Louis Jordan 2010 – current



  • Safety and Outcomes of Articular Cartilage Defects in knee treated with DeNovo NT. – Sponsor: Zimmer; Investigators: Kevin Bonner, Samuel Robinson 2011 – 2016
  • ECHO Hip System Prospective Data Collection. – Sponsor: Biomet; Investigator: Louis Jordan 2011 – 2015
  • Characterizing and Determining the Sensitivity and Specificity of the Wallet and Bra Signs for Adhesive Capsulitis. -Sponsor: Investigator; Investigator: Kevin Bonner 2013-2015
  • Subjective Outcomes of Biceps Tenotomy of the Shoulder. -Sponsor: Investigator; Investigator: Kevin Bonner 2013-2015
  • Prospective Post Market Clinical Follow-Up Study of the Continuum Metal on Polyethylene Acetabular System. – Sponsor: Zimmer; Investigator: Louis Jordan 2011-2014.
  • Exploratory Evaluation of the Potential for Long-Term Retention of Gadolinium in the Bones of Patients who have Received Gadolinium based Contrast Agents according to their medical history. -Sponser: Ecron Acunova; Investigators: Louis Jordan, James Dowd, Jack Siegel, Samuel Robinson 2013-2014.
  • Outcomes of Rotator Cuffs Utilizing Arthroscopic Surgery. -Sponsor: Investigator; Investigator: Kevin Bonner 2011-2013
  • Intraoperative Surgical Evaluation of Instrument Trials used in Primary Total Knee Arthroplasty. – Sponsor: DePuy; Investigator:  James Dowd 2010-2011
  • In Vivo Analysis of the “New” Low Contact Stress Rotating Platform Posterior Stabilizing TKA. – Sponsor: DePuy; Investigator: James Dowd 2008 – 2009
  • Outcomes of Anterior Cruciate Ligament Surgery Utilizing Anterior Tibialis Allograft. – Investigator: Kevin Bonner 2007 – 2008
  • A Prospective, Multicenter Clinical Investigation of the LCS Complete Posterior Stabilized Mobile-Bearing Total Knee System. – Sponsor: DePuy; Investigator: James Dowd 2006 – 2008
  • Open-Label Phase I/II Pilot Study to Evaluate Articular Cartilage Defects of the Knee with a Neocartilage Implant. – Sponsor: Zimmer; Investigator: Kevin Bonner 2006 – 2012
  • Dual-energy X-ray Absorptiometry (DEXA) Measurement of Bone Mineral Density Around a Porous-coated Cementless Total Hip Arthroplasty: A Comparison Study of Proximally versus Fully Porous Coated Femoral Stem Design. – Sponsor: Zimmer; Investigator: Louis Jordan 2005 – 2011
  • Total Shoulder Outcomes and LCS Complete Outcomes Study. – Sponsor: DePuy; Investigators: Jack Siegel, James Dowd 2005 – 2012
  • A Prospective, Comparative, Randomized Study of GVF vs. Cross-Linked Polyethylene using the PFC Sigma CoCr Tibial Tray in Cemented Total Knee Arthroplasty. – Sponsor: DePuy; Investigator: Kevin Bonner 2005 – 2013
  • Long Term Results and Complications of a Mobile Bearing Patella – Investigator: Louis Jordan 2005 – 2006
  • A Clinical Study of the DePuy Articular Surface Replacement (ASR) Hip Prosthesis System. – Sponsor: DePuy; Investigators: Jack Siegel, James Dowd 2004 – 2010
  • A Prospective, Non-Comparative Study to Evaluate the Performance of the DePuy Low Contact Stress (LCS) Complete Mobile Bearing Total Knee System. – Sponsor: DePuy; Investigator: James Dowd 2004 – 2006
  • A Multi-Center, Prospective Clinical Evaluation of Pinnacle Acetabuler Implants in Total Hip Arthroplasty. – Sponsor: DePuy; Investigator: Jack Siegel, James Dowd 2003 -2013
  • A Prospective, Non-Comparative Study to Evaluate the Performance of the DePuy Low Contact Stress (LCS) Complete Revision Mobile-Bearing Total Knee System and Surgical Instrumentation. – Sponsor: DePuy; Investigator: James Dowd 2003 – 2006
  • Epoch Hip Prosthesis – MultiCenter Study – Sponsor: Zimmer; Investigator: Louis Jordan 2002 – 2009
  • Performance of the Hedrocel Metal Bearing THR System in Primary Total Hip Arthroplasty – Sponsor: Implex; Investigator: Louis Jordan 2002 – 2006