Evaluation of the Accuracy and Use of X-Ray Markers in Digital Templating for Total Hip Arthroplasty

Bayne, Christopher O.; Krosin, Michael; Barber, Thomas

doi:10.1016/j.arth.2007.11.020

Cited by 41 publications

(31 citation statements)

References 4 publications

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“…This magnification factor was particularly clear in pelvic overviews for planning of total hip arthroplasty. Since the magnification increases proportionally to the distance between hip and film, greater magnification factor variance must be assumed for pelvic overviews due to the influence of corpulence [17,21]. Nevertheless, we were unable to find any evidence of interdependence between planning accuracy and BMI in the planning of total knee or hip arthroplasties.…”

Section: Discussioncontrasting

confidence: 42%

“…A reduction in accuracy due to overlapping soft tissues as found by Bayne et al for pelvic overviews is also irrelevant in most cases at the knee [17]. Directly compared to planning of the femoral component, templating of the tibial component was more accurate.…”

Section: Discussionmentioning

confidence: 79%

“…Bayne et al report a magnification factor of 120 ±5%; in contrast, White and Shardlow found a factor of 97 % for digital templating compared with 115-120 % for analogue templating [9,17].…”

Section: Discussionmentioning

confidence: 98%

“…Different methods of scaling digital radiographs have been described and investigated to improve planning accuracy [17][18][19][20][21]. Accurate positioning of the reference ball at the level of the joint is crucial to achieving the greatest possible referencing reliability [17,22,23].…”

Section: Introductionmentioning

confidence: 99%

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Digital templating in total knee and hip replacement: an analysis of planning accuracy

Kniesel

Konstantinidis

Hirschmüller

et al. 2013

International Orthopaedics (SICOT)

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Purpose The aim of this study was to determine how well preoperative size selection for total knee and hip arthroplasties based on the digital imaging with and without additional referencing correlated with the size actually implanted. Methods Size selection planning of total knee arthroplasty by digital templating was documented in 46 cases with reference ball (group A) and in 48 cases without ball (group B). In addition, prospective analysis of pre-operative planning was conducted for 52 acetabular components with reference ball (group C) and 69 without ball (group D) as well as stem planning in 38 cases with ball (group E) and 54 cases without ball (group F). The data were analysed and compared with the size of the final component selected during surgery. Results The correlation between planned and implanted size for total knee arthroplasty in group A resulted in femoral anteroposterior (AP) r =0.8622 and lateral r =0.8333 and in group B AP r =0.4552 and lateral r =0.6950. Tibial in group A was AP r =0.9030 and lateral r =0.9074 and in group B AP r = 0.7000 and lateral r =0.6376. For the acetabular components, the results in group C were r =0.5998 and group D r =0.6923. For stems, group E was r =0.5306 and group F r =0.5786. No correlation between BMI and the difference between planned and implanted size was found in any of the groups. Conclusion In the case of total hip arthroplasty there was a relatively low correlation between planned and implanted sizes with or without reference ball. For total knee arthroplasties the already high precision of size planning was further improved by the additional referencing with a reference ball.

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Section: Discussioncontrasting

confidence: 42%

Section: Discussionmentioning

confidence: 79%

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Digital templating in total knee and hip replacement: an analysis of planning accuracy

Kniesel

Konstantinidis

Hirschmüller

et al. 2013

International Orthopaedics (SICOT)

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“…Dies kann z. B. eine genormte Metallkugel oder ein Bleilineal sein, die mit unterschiedlich hohen Kalibrierungsfehlern behaftet sind [8,9]. Die Genauigkeit der Planung hängt nicht nur von der Skalierungsmethode, sondern auch von der Qualität des verwendeten Röntgenbilds ab, das in Rückenlage und 10-15°Innenrotation beider Hüftgelenke durchgeführt werden sollte [10,11].…”

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