Orderly oriented wire mesh: a novel porous coating.
As an alternative to commercially available porous beads and fiber metal mesh, a new porous coating, orderly oriented wire mesh (OOWM), was developed. Rectangular plugs, 10 x 5 x 5 mm with porous-coated beads, and four different OOWM configurations were inserted into bilateral femoral condyles of adult beagles. Dogs were sacrificed immediately after implantation, and at 4 weeks, 8 weeks, and 12 weeks postimplantation. Mechanical pullout strength of plugs revealed that porous beads are equivalent to the simplest OOWM at 12 weeks postimplantation. Of the four OOWMs tested, the 25 x 25 single layer was significantly more stable than others at 4 weeks postimplantation. These results indicate that in an in vivo unloaded model, OOWM is just as effective as the porous beads in achieving early bone ingrowth and stability.
Naidu
S H
SH
Department of Orthopedic Surgery, Pennsylvania State University, Hershey Medical Center, Hershey, USA.
Moulton
M J
MJ
Cuckler
J M
JM
Ducheyne
P
P
D000818:Animals; D001672:Biocompatible Materials / Q000627:therapeutic use; D001696:Biomechanical Phenomena; D004195:Disease Models, Animal; D004285:Dogs; D005260:Female; D005593:Fracture Fixation, Internal / Q000295:instrumentation* / Q000379:methods; D017102:Fracture Healing / Q000502:physiology; D006620:Hip Fractures / Q000601:surgery; D008297:Male; D008422:Materials Testing; D008962:Models, Theoretical; D016348:Osseointegration; D019736:Prostheses and Implants; D016059:Range of Motion, Articular; D014025:Titanium
D001672:Biocompatible Materials; D014025:Titanium