Prospective double-blind RCT of 39 patients (40 shoulders) randomized to cemented all-polyethylene versus uncemented metal-backed glenoid components in total shoulder arthroplasty for primary osteoarthritis, with minimum 3-year follow-up evaluating radiographic loosening, radiolucency, functional outcomes by Constant score, and revision rates.
When selecting a glenoid component for primary TSA, cemented all-polyethylene remains the standard: radiolucent lines are common but typically non-progressive and functionally silent, whereas metal-backed loosening leads to catastrophic osteolysis and often unsalvageable bone loss.
In type B (biconcave) glenoids with preoperative posterior humeral subluxation, be vigilant for recurrent subluxation even after anatomic reorientation — the authors recommend posterior capsulorrhaphy in severe cases to prevent eccentric wear.
Prospective double-blind RCT of 39 patients (40 shoulders) randomized to cemented all-polyethylene versus uncemented metal-backed glenoid components in total shoulder arthroplasty for primary osteoarthritis, with minimum 3-year follow-up evaluating radiographic loosening, radiolucency, functional outcomes by Constant score, and revision rates.
When selecting a glenoid component for primary TSA, cemented all-polyethylene remains the standard: radiolucent lines are common but typically non-progressive and functionally silent, whereas metal-backed loosening leads to catastrophic osteolysis and often unsalvageable bone loss.
In type B (biconcave) glenoids with preoperative posterior humeral subluxation, be vigilant for recurrent subluxation even after anatomic reorientation — the authors recommend posterior capsulorrhaphy in severe cases to prevent eccentric wear.