Fondren Orthopedic Group, Texas Orthopedic Hospital, Houston, TX 77030, USA.
J Shoulder Elbow Surg. 2010 Mar;19(2):251-7. doi: 10.1016/j.jse.2009.10.013.
Modern cementing techniques have improved glenoid fixation, reduced glenoid lucency seen with keeled components, and may eliminate differences attributable to glenoid design. The purpose of this study was to determine the effect of glenoid design on immediate and follow-up radiographic lucency of pegged and keeled glenoid components, using modern cementing techniques.
Fifty-three total shoulder arthroplasties were performed in patients with primary glenohumeral osteoarthritis. Patients were randomized prospectively to receive either a pegged or keeled glenoid component. Three raters graded radiographic glenoid lucencies.
On immediate radiographs, there was no significant difference in the rate of glenoid lucency between pegged (0%) and keeled (15%) glenoid components (P = .128). However, after an average of 26 months, the rate of glenoid lucency was significantly higher in patients with keeled components (46%) compared to patients with pegged components (15%) (P = .003).
Even with modern cementing techniques, pegged glenoid components remain radiographically superior to keeled glenoid components.
现代的骨水泥技术改善了肩胛盂的固定，减少了有翼状肩胛盂假体的肩胛盂透光，可能消除了由于肩胛盂设计导致的差异。本研究的目的是确定在使用现代骨水泥技术时，肩胛盂设计对带钉和有翼状肩胛盂假体即刻和随访时的影像学透光的影响。
对 53 例原发性肩关节炎患者进行了全肩关节置换术。患者前瞻性随机分为带钉或有翼状肩胛盂假体组。3 位评估者对肩胛盂的影像学透光进行分级。
即刻影像学检查时，带钉（0%）和有翼状（15%）肩胛盂假体的肩胛盂透光率无显著差异（P =.128）。然而，平均随访 26 个月后，有翼状肩胛盂假体组（46%）的肩胛盂透光率明显高于带钉肩胛盂假体组（15%）（P =.003）。
即使使用现代骨水泥技术，带钉肩胛盂假体在影像学上仍优于有翼状肩胛盂假体。
