Purpose: For preserving the humeral bone stock, some surgeons proposed a stemless humeral prosthetic component. This study reports the functional and radiologic results of the stemless anatomic prosthesis Simpliciti*(Tornier, Wright, Stryker), with the hypothesis that it can achieve a good metaphyseal fixation.
Methods: 28 patients underwent 30 shoulder replacements with the Simpliciti* humeral prosthesis followed for an average of three years (2 months to 8 years). The clinical outcome used the Constant-Murley score and the Bankes resistance and force evaluation. The radiologic assessment looked after radiolucent lines, signs of implant migration, osteolysis or loosening.
Results: The Constant score improved from 19.03 preoperatively to 54.03 points post operatively. Radiographic analysis showed one early component loosening, and at the longer follow-up, one radiolucent line. All the other implants appeared well fixed.
Conclusion: This study verified the quality of the metaphyseal fixation of this stemless implant, with achieving a significant functional improvement.
Level Of Evidence: Level IV, Case Series, Treatment Study.
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