Quantitative ingrowth analysis of a porous-coated acetabular component in a canine model.
Histomorphometric analysis of bone ingrowth into a porous-coated acetabular component was evaluated in a canine model. A total of nine prostheses were evaluated, 3 at 6 months, 3 at 12 months, and 3 at 24 months after implantation. All implants were grossly stable at the time of retrieval. The mean percentage of bone ingrowth was 12% at 6 months, 24% at 12 months, and 24% at 24 months. Narrow radiolucent lines noted on microradiographs were more evident at the 6 month time period than at the 12 or 24 month time periods. Bone ingrowth into a porous-coated acetabular component in a weight-bearing model may continue beyond the 6 month time period, and early evaluation of bone ingrowth may underestimate final bone ingrowth.
Schiller
T D
TD
Department of Companion Animal and Special Species Medicine, College of Veterinary Medicine, North Carolina State University, Raleigh.
DeYoung
D J
DJ
Schiller
R A
RA
Aberman
H A
HA
Hungerford
D S
DS
D000077:Acetabulum / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000502:physiology*; D000818:Animals; D002484:Cementation; D004195:Disease Models, Animal; D004285:Dogs / Q000033:anatomy & histology / Q000502:physiology* / Q000601:surgery; D006622:Hip Prosthesis / Q000662:veterinary*; D008852:Microradiography; D016348:Osseointegration; D011474:Prosthesis Design