Observations on the effect of movement on bone ingrowth into porous-surfaced implants

Although porous-surfaced orthopedic implants have been designed for fixation by bone ingrowth, there is clinical evidence that this does not always occur. Initial implant movement relative to host bone can result in attachment by a nonmineralized fibrous connective tissue layer. The ranges of moveme...

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Bibliographic Details
Published inClinical orthopaedics and related research no. 208; p. 108
Main Authors Pilliar, R M, Lee, J M, Maniatopoulos, C
Format Journal Article
LanguageEnglish
Published United States 01.07.1986
Subjects
Animals
Bone Regeneration
Bone Screws
Dental Alloys
Dental Implantation, Endosseous, Endodontic
Dogs
Femur - pathology
Prostheses and Implants
Prosthesis Design
Prosthesis Failure
Stress, Mechanical
Time Factors
Tooth Root - pathology
Vitallium
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Summary:Although porous-surfaced orthopedic implants have been designed for fixation by bone ingrowth, there is clinical evidence that this does not always occur. Initial implant movement relative to host bone can result in attachment by a nonmineralized fibrous connective tissue layer. The ranges of movement that result in either bone or fibrous connective tissue fixation are observed in dogs in two independent studies. Experimentally, bone ingrowth can occur in the presence of some movement, albeit very small (up to 28 mu), while excess movement (150 mu or more) can result in attachment by mature connective tissue ingrowth.
ISSN:0009-921X
DOI:10.1097/00003086-198607000-00023