Knee flexion influences periprosthetic BMD measurement in the tibia. Suggestions for a reproducible clinical scan protocol

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  • Ortopædkirurgisk Afdeling E, THG
  • Ortopædkirurgisk afd., Holstebro
  • Institute of Biostatistics
  • The Department of Orthopaedics E, ?AS
The quality and quantity of bone is important for the success of joint prostheses and may be monitored by dual energy X-ray absorptiometry (DXA). Available protocols suggest that the knee should be positioned in full extension. This is not possible for most patients in the first days after surgery; however, deficits in extension normalize with rehabilitation. Individual knee flexion between the baseline and follow-up investigations may therefore be different. We investigated the sensitivity of bone mineral density (BMD) measurements to knee flexion in a phantom study and in patients. We suggest a protocol for clinical use.
Original languageEnglish
JournalActa Orthopaedica (Print Edition)
Pages (from-to)463-70
Number of pages8
Publication statusPublished - 1 Aug 2010

    Research areas

  • Absorptiometry, Photon, Arthroplasty, Replacement, Knee, Bone Density, Humans, Knee, Knee Prosthesis, Phantoms, Imaging, Prognosis, Range of Motion, Articular, Reproducibility of Results, Sensitivity and Specificity, Tibia, Treatment Outcome

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