Linked Life Data

9266047

Source:http://linkedlifedata.com/resource/pubmed/id/9266047

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6-7
pubmed:dateCreated
1997-9-25
pubmed:abstractText
In 20 anatomic specimens with an acetabular defect (type Paprosky 3b), an acetabular component was implanted in the position of a high hip center. The vertical migration of the hip center ranged between 13 and 35 mm. It was accompanied by a lateralization and ventral migration of between 5 and 25 mm. The influence on the different abductor muscles was calculated through computer model comparing muscle force and muscle length before and after implantation of a high hip center. The increase in length of the gluteus maximus muscle and the posterior part of the gluteus minimus muscle ranged between 1% and 6%, while all other evaluated abductor muscles were shortened from 3% to 16%. The effect of the simultaneous changes of the lever arms was an increase in necessary muscle strength for pelvic stabilization from 140% to 250% compared with the original estimated strength prior to implantation. This may lead to insufficiency of the abductor muscles after placement of a high hip center. On the basis of these findings, we do not recommend the implantation of an acetabular component in the position of a high hip center.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:issn
0936-8051
pubmed:author
pubmed:issnType
Print
pubmed:volume
116
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
385-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1997
pubmed:articleTitle
Influence of a high hip center on abductor muscle function.
pubmed:affiliation
Westfälische Wilhelms-University Münster, Department of Orthopaedic Surgery, Germany.
pubmed:publicationType
Journal Article, In Vitro