Long‐Term Results of Anatomic Stemless Shoulder Prosthesis in Patients With Primary Osteoarthritis
Kevin Knappe, Franziska Becker, Raphael Trefzer, Mustafa Hariri, Anna‐Katharina Nolte, Matthias Bülhoff · 2026
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Description
Kevin Knappe and team give long-term results for a stemless anatomic shoulder implant in primary osteoarthritis. Their 2026 look-back single-site study trailed 27 shoulders in 24 people, mean age 75, worked on from 2009 to 2011, with mean follow-up of 142 months. Shaft-fixed implants have long been the norm, but bone-saving stemless designs are gaining ground, and long-term data have been thin.
Constant-Murley scores rose a lot after surgery, and range of motion rose markedly in flexion, abduction, and external rotation. Overall, 85% were pleased or very pleased. Four new surgeries took place: two swaps to other care and two in the same system for loosening and infection. Ten- and twelve-year survival rates were 89% and 85%. Loosening risk was 30%, though no socket loosening took place and arm bone loosening showed in one case. The team calls long-term results fair and on par with other stemless designs.
Catalog record
| CREATOR | Kevin Knappe, Franziska Becker, Raphael Trefzer, Mustafa Hariri, Anna‐Katharina Nolte, Matthias Bülhoff |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 24 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |