1.

Principal Investigator: Mechanical Stability of Tibial Rods in Total Knee Arthroplasty Employing a Cavitary Defect Model.

2.

Principal Investigator: Development of Clinical Staging System for Periprosthetic Joint Infections.

3.

Principal Investigator: Clinical Outcome Study of Infected Total Knee Utilizing USC Staging System.

4.

Principal Investigator: Clinical Outcome Study of Infected Total Hip Utilizing USC Staging System.

5.

Principal Investigator: Measurement of Sagittal and Coronal Plane Tibial Offset Relevant to Prosthetic Total Knee Design. Development of an Offset Tibial Keel.

6.

Principal Investigator: Use of a Mechanical Sensing Device to Objectively Measure Patellofemoral Crepitation after Total Knee Arthroplasty.

7.

Principal Investigator: Genetics Institute: Protocol C9731-11: A Dose Finding and Safety Study of Recombinant Human Bone Morphogenetic Protein 2 (rhBMP-2) (Absorbable Collagen Sponge (ACS) as an Adjuvant Therapy to Core Decompression in Patients with Stage I and II Osteonecrosis of the Femoral Head.

8.

Principal Investigator: Gait Kinematics and Kinetics in Patients with Reimplantation Total Knee Arthroplasty using a Medial Gastrocnemius Rotational Flap. A Pilot Study.

9.

Principal Investigator: Location of Positive Intraoperative Cultures in Infected Total Knee Arthroplasty: A Retrospective Review of Fifty Patients.

10.

Co-Investigator: An Open-Label, Randomized, Parallel-Group Study Comparing the Perioperative Administration of Procrit (Epoetin Alfa) to the Standard of Care in Blood Conservation for Revision Total Hip Reconstruction.

11.

Principal Investigator. Biomet Ceramic on Ceramic Acetabular Clinical Investigation. To compare the safety and effectiveness of the primary and secondary study endpoints.

12.

Principal Investigator. Clinical Outcome Study of Patients with Infected Total Hip Arthroplasty.

13.

Principal Investigator. Location of Positive Cultures in Infected Total Knee Replacement.

14.

Principal Investigator. Extensor Mechanism Reconstruction in Revision Total Knee Arthroplasty: The Achilles Tendon/Medial Gastrocnemius Composite Autograft.

15.

Principal Investigator. Comparison of Articulated and Static Spacers in the Treatment of Infected Total Knee Arthroplasty.

16.

Principal Investigator: Biomet M 2 A 38 Metal on Metal Hip System Multi-Center Prospective Study.

17.

Principal Investigator: Biomet Maxim PS and Maxim PS RPG Knee System Comparative Multi-Center Prospective Study.

18.

Co-Investigator: The Effects of Kinesiotex Taping on Edema in Individuals Immediately Following Total Knee Arthroplasty.

19.

Co-Investigator: A Radiographic Study of Proximal Radius Anatomy, With Implications in Radial Head Replacement.