JOURNAL ARTICLE

Reproducibility and accuracy of templating uncemented THA with digital radiographic and digital TraumaCad templating software

Panamoottil G Anil Kumar, Sayyied J Kirmani, Heike Humberg, Venu Kavarthapu, Patrick Li
Orthopedics 2009, 32 (11): 815
19902895
The reproducibility and accuracy of a digital software templating program on digital images was examined for primary uncemented total hip arthroplasty (THA). Forty-five patients waiting for an uncemented THA had templating performed of their digital picture archiving and communication systems (PACS) pelvic images with the TraumaCad software program (Orthocrat Ltd, Petach-Tikva, Israel). Acetabular cup size, femoral stem size, and femoral offset were noted by 2 observers, and again by 1 of the observers a week later. Through correlation coefficients and significance testing, the degree of intraobserver and interobserver variability was evaluated, as well as the level of accuracy for digital templating. Excellent correlation was found for all data sets, with no significant difference between them in intraobserver reproducibility. Also in terms of interobserver reproducibility, we found good levels of correlation, with no significant difference between the data sets. In terms of accuracy, the correlation was at least acceptable with no significant difference between any of the data sets. The use of the TraumaCad digital software program provides a reliable method of templating digital images for uncemented THAs. There is little intraobserver and interobserver variability, and the method produces an acceptable level of accuracy.

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