Linked Life Data

8436582

Source:http://linkedlifedata.com/resource/pubmed/id/8436582

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1993-3-22
pubmed:abstractText
The micromotion chamber consists of a titanium outer cylinder and a central core, which are pierced by a transverse 1-mm canal for tissue ingrowth. Six weeks after implantation in the proximal tibia in mature rabbits, the outer cylinder is osseointegrated; the central core can then be moved in relation to the fixed outer cylinder. Thus, the tissue growing through the pore, from the cylinder into the core, can be subjected to motion of a predetermined amplitude and frequency. In this study we investigate the influence of pore cross-sectional shape on tissue ingrowth in the canal. In six animals, the outer cylinder was pierced by a square 1-mm hole that was congruent with the square hole in the core; in five animals, the hole in the cylinder was round. The cross-sectional area of the square hole in the cylinder was about 21% greater than in a round hole. In all cases, the channel in the inner core was 1 x 1 x 5-mm quadrate. All chambers underwent 20 cycles/day of micromotion for a 3-week period. The amplitude of the micromotion was 0.5 mm. Chambers containing cylinders with a round hole demonstrated less bone ingrowth as compared to cylinders with a square hole. This observation may be due to several factors including the greater cross-sectional area of the square versus the round hole in the cylinder and the enhanced congruity provided by the square outer and inner holes, versus a round outer and square inner hole.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0021-9304
pubmed:author
pubmed:issnType
Print
pubmed:volume
27
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
247-53
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Ingrowth of bone into pores in titanium chambers implanted in rabbits: effect of pore cross-sectional shape in the presence of dynamic shear.
pubmed:affiliation
Department of Orthopaedic Surgery, University Hospital, Lund, Sweden.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't