Mark E. Morrey, M.D.

Closed for Enrollment

• A Prospective, Randomized Study Comparing the Outcome of Large-Diameter versus Small-Diameter Glenospheres in Primary Reverse Shoulder Arthroplasty Using the Reunion System Rochester, Minn.

  The purpose of this study is to compare the outcome of primary reverse shoulder arthroplasty using the Stryker ReUnion System with the implantation of either a large (40 mm) or a small (36 mm) glenosphere (shoulder to arm, ball shaped joint).

• Long-Term Clinical and Functional Outcomes of Total Claviculectomy Versus Clavicle Non-Union on Shoulder Girdle Function Rochester, Minn.

  The purpose of this study is to determine the clinical effects of claviculectomy on shoulder range of motion, to assess the functional outcomes of patients undergoing claviculectomy, and to compare those results to patients with clavicle non-unions.

• Randomized Clinical Trial Comparing the Outcome of Cemented All-Polyethylene Pegged vs. Keeled Components through a Subscapularis Tenotomy or a Subscapularis Peel Rochester, Minn.

  The purpose of this study is to compare the outcome of primary anatomic shoulder arthroplasty using the Stryker ReUnion system with implantation of either a peg or keel glenoid construction.