PMID: 8595767Mar 1, 1996Paper

Effect of rotation on periprosthetic bone mineral measurements in a hip phantom

Clinical Orthopaedics and Related Research
E S MortimerJ D Bobyn

Abstract

The effect of rotation on the measurement of periprosthetic bone mineral content and bone mineral density using dual energy xray absorptiometry was studied in 9 anatomic specimen femora implanted with noncemented titanium hip prostheses. An apparatus was constructed to permit accurate femoral rotation through an arc of 30 degrees internal to 30 degrees external rotation in 5 degrees increments. Two scans were obtained at each increment of rotation for a total of 26 scans for each implanted femur. Change in bone mineral content and bone mineral density was measured for each of 7 contiguous periimplant regions (Gruen zones). The precision of the paired bone mineral density measurements was 1.7%. In all Gruen zones, the means of bone mineral content and bone mineral density measurements varied within 5% between 15 degrees internal and 15 degrees external rotation. Variation in limb rotation, as might occur with temporal studies of periimplant bone remodeling, can be tolerated within easily controllable limits without excessive error in bone mineral measurements.

References

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Citations

Apr 12, 2008·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Martin R DowningGeorge P Ashcroft
Feb 17, 2009·Clinical Orthopaedics and Related Research·James B Stiehl
Aug 7, 2012·International Orthopaedics·Matthias LerchChristina M Stukenborg-Colsman
Sep 22, 2011·International Orthopaedics·Matthias LerchChristina M Stukenborg-Colsman
Mar 5, 2014·Medical Science Monitor : International Medical Journal of Experimental and Clinical Research·Yi ShenWeili Wang
Jan 23, 2020·International Orthopaedics·Josef HochreiterConrad Anderl
Mar 5, 2003·Clinical Orthopaedics and Related Research·Søren KoldJoan E Bechtold
May 15, 2008·Skeletal Radiology·Marco GalliAngelo Gabriele Aulisa
Apr 7, 2010·Acta Orthopaedica·Jeannette Østergaard PennySøren Overgaard
Nov 26, 2010·Osteoporosis International : a Journal Established As Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA·C MerleP R Aldinger
May 2, 2012·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·Christina M Stukenborg-ColsmanMatthias Lerch
Jun 5, 2016·Clinical Orthopaedics and Related Research·Young-Hoo KimJun-Shik Kim
Apr 20, 2012·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Matthias LerchBernd A Behrens
Jan 12, 2008·International Orthopaedics·Juan J PaniselloMaría J Caballero
Nov 12, 2020·Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry·Trygve Holm-GladOle Reigstad

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