The utility and precision of analogue and digital preoperative planning for total hip arthroplasty.

The utility and precision of analogue and digital preoperative planning for total hip arthroplasty. Research Abstract Details 

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The utility and precision of analogue and digital preoperative planning for total hip arthroplasty. Abstract Text:

We prospectively compared the utility and precision of preoperative templating performed in printed films (analogue) with that performed on digital radiographs (digital) in 69 patients undergoing primary total hip replacement. Five patients were excluded when misplacement of the marker resulted in a magnification error greater that 10%; in the remaining patients (64 hips), the cup size was within +/- one size in 62 (97%) of the analogue and 52 (81%) of the digital (p = 0.01) plans. The stem size was within +/- one size in 63 (98%) of the analogue and 60 (94%) of the digital (p = 0.39) plans. The distance from the proximal corner of the lesser trochanter to the center of the prosthetic head (LTCD) in the analogue differed by 5 mm or more from the digital plan in nine cases (14%). Analogue preoperative planning yielded more predictable results than digital planning, particularly in terms of acetabular component size and LTCD that dictates limb lengthening-shortening. The sources of error were not clearly explained by variations in magnification. Inconsistent positioning of the magnification marker may jeopardise the safe implementation of digital templating.

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The utility and precision of analogue and digital preoperative planning for total hip arthroplasty. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: International orthopaedics

VOLUME: 32

Page Numbers: 289-94

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ISSN: 0341-2695

DAY: 3

MONTH: 04

YEAR: 2007

The utility and precision of analogue and digital preoperative planning for total hip arthroplasty. Information

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LANGUAGE: eng

NlmUniqueID: 7705431

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Grant and Affiliation Information for The utility and precision of analogue and digital preoperative planning for total hip arthroplasty.

AFFILIATION: Hospital for Special Surgery, Weill Medical College of Cornell University, 535 East 70th Street, New York, NY, 10021, USA, gonzaleza@hss.edu.

Country: Germany

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MEDLINETA: Int Orthop

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