Linked Life Data

1723610

Source:http://linkedlifedata.com/resource/pubmed/id/1723610

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1992-3-19
pubmed:abstractText
The metabolic fate of whole grafts that were either vascularized or nonvascularized were compared. This study was designed to quantify and correlate changes in bone resorption, formation, and mass in orthotopic, stably fixed, weight-bearing autografts. The grafts were 8-cm segments of the fibula that were internally fixed. Fibula segments subjected to sham operations, nonvascularized autografts, and vascularized autografts were studied in 16 dogs at three months after surgery. Three months prior to surgery the dogs were labeled repeatedly over two months with 3H-tetracycline and 3H-proline. Metabolic turnover of whole grafts was evaluated by quantifying loss of 3H-tetracycline for measuring postoperative resorption of bone mineral and loss of 3H-collagen for resorption of bone collagen. Net changes in bone dry weight, calcium, and collagen per whole grafts were obtained to determine differential changes in the mineral and matrix mass. The difference in change between bone resorption and bone mass was used to determine the amount of new bone formation that had replaced the resorbed bone. Vascularized autografts lost more mass (12%), and had more bone resorption (40%) and more bone formation (28%) than sham operated and unoperated fibulas. Nonvascularized grafts lost much more bone mass (48%) because resorption was large (61%) and formation was relatively small (13%). More new bone was formed in vascularized autografts than in nonvascularized autografts. During the incorporation of bone grafts, resorption is an early and rapid process, whereas formation is a late and slow process.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
8756-3282
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
323-9
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Bone mass and comparative rates of bone resorption and formation of fibular autografts: comparison of vascular and nonvascular grafts in dogs.
pubmed:affiliation
Department of Orthopaedics, Case Western Reserve University, Cleveland, OH 44106.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S.