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Copeland™ Shoulder

Copeland Resurfacing skulderprotesen er det mest gennemprøvede produkt af sin art med mere end 20 års klinisk opfølgning. Copeland protesen genskaber den naturlige anatomi i skulderleddet. Ydermere er det simple, men præcise instrumentarium, sammen med den enkle operationsteknik med til at hjælpe kirurgen til et godt resultat.

Copeland™ Shoulder er en ucementeret  resurfacing protese designet til at efterligne formen på et nomalt humerushoved og til at genskabe normal anatomi hos patienter med gigt. Copeland er den oprindelige resurfacing skulderprotese med mere end 20 års1 klinisk brug verden over.

Design

Det  revolutionerende design af  Copeland™ Humeral Resurfacing Head protesen omfatter en Extended Skirted Rim for optimal pasform og et konisk stem, for at sikre optimal fiksering.

Andre fordele:

Closed Pore Porous Coating og HA for minimering af slidpartikler og forbedret langtidsfiksering2,3

Titanium Porous Coating for uovertruffen biokompatibilitet2

Cobalt Chrome og Arcom™ polyethylene artikulering for minimal slitage

8 prostesestørrelser for at efterligne den normale anatomi så præcist som muligt

Nem konvertering til en traditionel protese med stem:
• Fjern blot Copeland komponenten og erstat det med et implantat med stem; eller
• Fjern humerushovedet og Copeland protesen sammen og isæt et implantat med stem

Instrumenter og operationsteknik

Copeland™ operationsteknikken er minimal invasiv og bevarer mest mulig knogle. Det enkle instrumentarium er farvekodet, hvilket er en hjælp for det kirurgiske team. Operationsteknikken er baseret på 3 trin:

1. Find centrum af humerushovedet
2. Ream for at genskabe formen på humerushovedet
3. Bor hul til protesens stem

Kliniske resultater

(1) Mullett H, Levy O, Raj D, Even T, Abraham R, Copeland S A, Copeland Surface Replacement of the Shoulder – Results of an Hydroxyapatite-Coated Cementless Implant in Patients over 80 years of age, International Congress of Shoulder and Elbow Society, Brazil, 2007
Highlights of this study include:

Between 1993 and 2002 a series of 209 shoulders underwent resurfacing arthroplasty.
==> 180 hemi arthroplasty
==> 29 total shoulders

  Pre-Op Scores Post-Op Scores
Constant Score  12 63.1
Forward Flexion (degrees) 68.1 115.9

 • No humeral radio-luciencies witnessed throughout this series

• The survival rate of HA coating is 98% @ 10 years

• Kaplan Mier Analysis suggests 96.4% survival rate for the prosthesis @ 10 years

• The revision rate for the HA coated Mark IV, launched in 1993 is 2.6%. Moreover, revisions in OA are 0.7%, amounting to one revised prosthesis!

• Hemi and total arthroplasty were no different in terms of functional outcome in this series. 

Conclusion

There are still no luciencies reported since introduction of HA Coating.

OA patients still achieve the best functional scores

16% of the patients in this series had total shoulder arthroplasty, proving you can replace the glenoid with a Copeland Shoulder!

For further information on the Copeland Shoulder, please go to the Reading Shoulder Unit

 

(1) Mullett H, Levy O, Raj D, Even T, Abraham R, Copeland S A, Copeland Surface Replacement of the Shoulder – Results of an Hydroxyapatite-Coated Cementless Implant in Patients over 80 years of age, International Congress of Shoulder and Elbow Society, Brazil, 2007
(2) Bourne RB, Rorabeck CH, Burkart BC, Kirk PG. Ingrowth Surfaces. Plasma spray Coating to Titanium Alloy Hip Replacements. Clin. Orthop 1994 Jan; 298: 37-46
(3) Soballe K, Toksvig-Larsen S, Gelinek J, Fruengaard S, Hansen S, Ryd L, Lucht U, Bunger C. Migration of Hydroxyapatite Coated Femoral Prosthesis. JBJS Vol. 75-B. No 5. Sept. 1993