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Media type:
E-Article
Title:
Cemented all-polyethylene glenoid with standard or individualized backside curvature : A retrospective comparative study
:
A retrospective comparative study
Contributor:
Schnetzke, Marc;
Sulzer, Susan;
Engelke, Jennifer;
Loew, Markus
Published:
Springer Science and Business Media LLC, 2021
Published in:
Obere Extremität, 16 (2021) 1, Seite 68-74
Description:
<jats:title>Abstract</jats:title><jats:sec>
<jats:title>Background</jats:title>
<jats:p>The clinical and radiographic results of an all-polyethylene glenoid with variable backside curvature adapted to the individual anatomy were compared with a standard all-polyethylene glenoid.</jats:p>
</jats:sec><jats:sec>
<jats:title>Methods</jats:title>
<jats:p>This retrospective study included 87 patients with primary glenohumeral osteoarthritis and anatomic shoulder replacement with a short-stem prosthesis and cemented all-polyethylene glenoid. In all, 42 patients with a mean age of 67 ± 8 years were treated with an all-polyethylene glenoid without variable curvature (group 1) and 45 patients with a mean age of 68 ± 10 years were treated with an all-polyethylene glenoid with individualized curvature (group 2). Clinical outcome was determined by range of motion, Constant Score (CS) age- and sex-adjusted Constant Score (CS%), and Subjective Shoulder Value (SSV). Radiographs were analyzed for the occurrence of radiolucent lines according to the method of Mole.</jats:p>
</jats:sec><jats:sec>
<jats:title>Results</jats:title>
<jats:p>After a mean follow-up of 31 months (range, 24–50) a significant improvement was achieved in all clinical parameters in both groups (<jats:italic>p</jats:italic> < 0.001). Immediately postoperatively, the radiolucent line score in group 1 was 0.8 ± 1.4 and in group 2 0.7 ± 1.1 (<jats:italic>p</jats:italic> = 0.713). At the final follow-up, the radiolucent line scores were 1.2 ± 2.0 in group 1 and 0.9 ± 1.1 in group 2 (<jats:italic>p</jats:italic> = 0.410). In five patients (12%) from group 1 and four patients from group 2 (9%), the radiolucent line score increased over time. One patient in group 1 (2%) exhibited radiographic glenoid loosening.</jats:p>
</jats:sec><jats:sec>
<jats:title>Conclusion</jats:title>
<jats:p>The all-polyethylene glenoid with individualized curvature showed promising short-term clinical and radiographic results. Further studies with a longer follow-up are necessary to evaluate whether the new all-polyethylene glenoid is superior to the standard all-polyethylene glenoid.</jats:p>
</jats:sec>