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The Bone & Joint Journal
Vol. 98-B, Issue 4 | Pages 504 - 511
1 Apr 2016
Histological evaluation of two designs of shoulder surface replacement implants
Ajami S Blunn GW Lambert S Alexander S Foxall Smith M Coathup MJ
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Aims

To assess the extent of osteointegration in two designs of shoulder resurfacing implants. Bony integration to the Copeland cylindrical central stem design and the Epoca RH conical-crown design were compared.

Patients and Methods

Implants retrieved from six patients in each group were pair-matched. Mean time to revision surgery of Copeland implants was 37 months (standard deviation (sd) 23; 14 to 72) and Epoca RH 38 months (sd 28; 12 to 84). The mean age of patients investigated was 66 years (sd 4; 59 to 71) and 58 years (sd 17; 31 to 73) in the Copeland and Epoca RH groups respectively. None of these implants were revised for loosening.