Mid-term results of a metal-backed glenoid component in total shoulder replacement.
Total shoulder replacement is a successful procedure for degenerative or some inflammatory diseases of the shoulder. However, fixation of the glenoid seems to be the main weakness with a high rate of loosening. The results using all-polyethylene components have been better than those using metal-backed components. We describe our experience with 35 consecutive total shoulder replacements using a new metal-backed glenoid component with a mean follow-up of 75.4 months (48 to 154). Our implant differs from others because of its mechanism of fixation. It has a convex metal-backed bone interface and the main stabilising factor is a large hollow central peg. The patients were evaluated with standard radiographs and with the Constant Score, the Simple Shoulder Test and a visual analogue scale. All the scores improved and there was no loosening, no polyethylene-glenoid disassembly and no other implant-related complications. We conclude that a metal-backed glenoid component is a good option in total shoulder replacement with no worse results than of those using a cemented all-polyethylene prosthesis.
Castagna
A
A
Shoulder and Elbow Unit, IRCSS Istituto Clinico Humanitas, 56 Via Manzoni 20089, Rozzano, MI, Italy.
Randelli
M
M
Garofalo
R
R
Maradei
L
L
Giardella
A
A
Borroni
M
M
D000368:Aged; D001172:Arthritis, Rheumatoid / Q000601:surgery; D019643:Arthroplasty, Replacement / Q000295:instrumentation / Q000379:methods*; D002484:Cementation; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007595:Joint Prosthesis; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000601:surgery; D011474:Prosthesis Design; D011859:Radiography; D012785:Shoulder Joint / Q000000981:diagnostic imaging / Q000601:surgery*; D014025:Titanium; D016896:Treatment Outcome
D014025:Titanium