Evaluation of thirty eight cemented pegged glenoid components with variable backside curvature: two-year minimum follow-up

• Published in: International orthopaedics 2017-11, Vol.41 (11), p.2353-2360
• Main Authors: Dauzère, Florence, Arboucalot, Marine, Lebon, Julie, Elia, Fanny, Bonnevialle, Nicolas, Mansat, Pierre
• Format: Article
• Language: English
• Subjects: Adult; Aged; Arthroplasty, Replacement, Shoulder - adverse effects; Arthroplasty, Replacement, Shoulder - methods; Bone Cements - adverse effects; Female; Follow-Up Studies; Human health and pathology; Humans; Life Sciences; Male; Medicine; Medicine & Public Health; Middle Aged; Original Paper; Orthopedics; Osteoarthritis - surgery; Prosthesis Design; Range of Motion, Articular; Reoperation - statistics & numerical data; Retrospective Studies; Scapula - surgery; Shoulder Joint - diagnostic imaging; Shoulder Joint - surgery; Shoulder Prosthesis - adverse effects; Treatment Outcome
• ISSN: 0341-2695; 1432-5195
• DOI: 10.1007/s00264-017-3635-7

Background The PERFORM™ pegged glenoid system has been used for shoulder arthroplasty since 2012. This system offers multiple backside curvatures per size to better match variable patient anatomy. As a result, less reaming is required and subchondral bone is preserved—a critical factor in preventing glenoid migration and loosening, thus enhancing implant longevity. Purpose The purpose of this study was to analyze all radiographic modifications around this new glenoid implant. Method Thirty-eight shoulders which received the PERFORM™ pegged glenoid component between June 2012 and January 2014 for primary or secondary osteoarthritis were reviewed at two-years minimum follow-up. There were 13 men and 22 women with an average age of 67 years. Humeral components were an uncemented short stem implant in nine (23%) and a resurfacing implant in 29 (77%). Results At 27-months average follow-up (24–41), Constant score improved from 30 to 65 points. Range of motion improved significantly at follow-up from 100° to 142° for the anterior elevation, and from 15 to 40° for the external rotation. Radiographic lucent lines (RLL) were observed post-operatively in eight cases (21%), and in 16 cases (42%) at the last follow-up with an increase of the RLL score from 0.36 ± 0.8 to 1.3 ± 2 ( p   12). One revision has been performed after anterior shoulder dislocation, rotator cuff tear and glenoid component migration. RLL score was not correlated with dominant side, sex, age, or Constant score. Discussion-Conclusion The cemented pegged glenoid component with multiple backside curvatures gave satisfactory results at two-years minimum follow-up for up to three years with a low RLL score. Long-term studies are mandatory to confirm these results.