A comparison of acetate vs digital templating for preoperative planning of total hip arthroplasty: is digital templating accurate and safe?
The purposes of this study were to compare the accuracy of acetate and digital templating for primary total hip arthroplasty (THA) and to determine if digital templating is safe. Preoperative planning was performed on 50 consecutive preoperative radiographs during 2005. Templating results were compared with the actual hip implants used. Interrater reliability of acetate templating and accuracy of acetate and digital templating were recorded. Digital measurement overestimated acetabular size (P < .001) and underestimated the femoral size (P = .03). The absolute errors were larger for digital compared with acetate templating; however, mean absolute errors did not differ significantly (acetabulum, P = .090; femur, P = .114). Acetate and digital templating can accurately predict the size of THA implants. Digital templating was determined to be acceptably safe for preoperative planning of primary THA operations.
Department of Orthopaedic Surgery, Lahey Clinic Medical Center, Burlington, Massachusetts 01805, USA.
Richard
R
Iorio
Jodi
J
Siegel
Lawrence M
LM
Specht
John F
JF
Tilzey
Audrey
A
Hartman
William L
WL
Healy
D000077:Acetabulum / Q000000981:diagnostic imaging; D000085:Acetates; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000379:methods*; D005269:Femur / Q000000981:diagnostic imaging; D006621:Hip Joint / Q000000981:diagnostic imaging* / Q000601:surgery; D006622:Hip Prosthesis; D006801:Humans; D015588:Observer Variation; D011300:Preoperative Care / Q000379:methods*; D017755:Prosthesis Fitting / Q000295:instrumentation / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results
D000085:Acetates