Radiostereometric Analysis: The Hip
HSS Journal
Attending Orthopaedic Surgeon, Hospital for Special Surgery
Professor of Orthopaedic Surgery, Weill Medical College of Cornell University
Thomas P. Sculco, MD
Surgeon-in-Chief, Hospital for Special Surgery
Professor of Orthopaedic Surgery, Weill Medical College of Cornell University
Bryan J. Nestor, MD
Assosciate Attending Orthopaedic Surgeon, Hospital for Special Surgery
Associate Professor in Orthopaedic Surgery, Weill Cornell Medical College
Edwin P. Su, MD
Assistant Attending Orthopedic Surgeon
Hospital for Special Surgery
Friedrich Boettner, MD
Assistant Attending Orthopaedic Surgeon, Hospital for Special Surgery
Instructor in Orthopaedic Surgery, Weill Medical College of Cornell University
Bassem Azzis,
Research Coordinator
Hospital for Special Surgery
Excerpt
Radiostereometric analysis is an accurate method of determining the migration and wear of orthopaedic implants such as total hip arthroplasties. While the overall concept of RSA is relatively straightforward: determining the precise location of two distinct objects relative to each other in three dimension such as the relative position of the femoral component and the proximal femur, the actual practical application is somewhat more complex. In radiostereometric analysis, the position in space of the original object is reconstructed from a two-dimensional x-ray film (Figure 1). In order to reconstruct the position of segments within the human body, each segment is marked with at least three tantalum beads. Movement between segments is then calculated by localizing each segment in a coordinate system.
This article appears in HSS Journal: Volume 1, Number 1.
View the full article at springerlink.com.
About the HSS Journal
HSS Journal, an academic peer-reviewed journal, is published twice a year, February and September, and features articles by internal faculty and HSS alumni that present current research and clinical work in the field of musculoskeletal medicine performed at HSS, including research articles, surgical procedures, and case reports.
posted 8/8/2005
