Radiostereometric analysis using clinical radiographic views: Validation measuring total hip replacement wear

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
Xunhua YuanMatthew G Teeter

Abstract

Radiostereometric analysis (RSA) is a stereo X-ray technique used in clinical research studies to evaluate micro-motion and wear of orthopaedic implants within bone. While highly accurate and precise, its adoption has been limited due to technical requirements such as the need for implanted marker beads and radiograph view angles determined by a calibration cage. We propose a new technique that separates the calibration procedure from the patient examination, enabling clinical radiograph views to be used for RSA measurements. The concept of a reference plate was adapted to establish the link between calibration procedure and patient examination procedure for cassette radiography, which may not be necessary for digital radiography. A hip wear phantom was used to validate this technique by comparing the error and repeatability of the novel procedure with that of conventional RSA. Femoral head penetration was measured versus the acetabular cup (head/cup) and marker beads in the acetabular liner (head/liner). Conventional RSA had lower inferior-superior average error (p = 0.03 for head/cup) while the modified RSA had lower anterior-posterior average error (p = 0.01). Average error was greater but not significantly so for the medial...Continue Reading

References

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Citations

Jul 1, 2016·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Stuart A CallaryDonald W Howie
Dec 4, 2016·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Jordan S BrobergMatthew G Teeter
Feb 14, 2018·The Bone & Joint Journal·K Lam Tin CheungM G Teeter
Jul 3, 2018·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Madeleine L Van de KleutMatthew G Teeter
Jul 6, 2018·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Xunhua YuanMatthew G Teeter
Jan 18, 2018·Journal of Biomechanics·Madeleine L Van de KleutMatthew G Teeter

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