Assessment of Accuracy and Reliability in Preoperative Templating for Hip Resurfacing Arthroplasty

• Published in: The Journal of arthroplasty Vol. 25; no. 3; pp. 445 - 449
• Main Authors: Olsen, Michael, BSc, PhD, Gamble, Patrick, MD, FRCS(C), Chiu, Mark, MD, FRCS(C), Tumia, Nezar, MD, FRCSEd (Tr&Ortho), Boyle, Richard A., MD, FRACS, Schemitsch, Emil H., MD, FRCS(C)
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 01.04.2010
• Subjects: Acetabulum - diagnostic imaging; Acetabulum - surgery; Adult; Aged; Arthroplasty, Replacement, Hip - instrumentation; Arthroplasty, Replacement, Hip - methods; Female; Femur - diagnostic imaging; Femur - surgery; Hip Joint - diagnostic imaging; Hip Joint - surgery; Hip Prosthesis; hip resurfacing; Humans; interobserver reliability; intraobserver reliability; Male; Middle Aged; Observer Variation; Orthopedics; Osteoarthritis, Hip - surgery; Outcome Assessment (Health Care); Preoperative Care - methods; preoperative digital templating; Prosthesis Design; Radiography; Reproducibility of Results; templating accuracy; Treatment Outcome; preoperative digital templating; intraobserver reliability; hip resurfacing; interobserver reliability; templating accuracy
• ISSN: 0883-5403; 1532-8406
• DOI: 10.1016/j.arth.2009.01.022

Abstract The current study investigated the accuracy and reliability of hip resurfacing component selection based on digital preoperative templating. Four surgeons made a template of preoperative radiographs on 2 occasions for acetabular and femoral components in 50 randomly selected hip resurfacing patients. Component selection reliability was variable among surgeons ( κ = 0.16-0.73) and fair between surgeons ( κ = 0.23-0.32). The average percentage of agreement for the acetabular component was 47% (range, 32%-64%) and for the femoral component was 54% (range, 38%-70%). Surgeons tended to underestimate implant size if the correct implant was not chosen (acetabular, 29%; femoral, 32%). Selection of an undersized femoral component may lead to femoral neck notching or varus implant alignment. This study emphasizes the need for intraoperative verification of preoperative templating results to ensure optimal implant selection in hip resurfacing.