Common Errors in the Execution of Preoperative Templating for Primary Total Hip Arthroplasty

Tripuraneni, Krishna R.; Archibeck, Michael J.; Junick, Daniel W.; Carothers, Joshua T.; White, Rick E.

doi:10.1016/j.arth.2009.10.004

Cited by 29 publications

(26 citation statements)

References 17 publications

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“…Our standard technique, which includes the use of only two sizes of reamers, might make a sufficient medialization difficult in some cases. This is in line with Tripuraneni et al [20], who concluded from their series of 75 primary THAs that incomplete medialization is a common error in the execution of preoperative templating. In the present series, the center of rotation was positioned more anteriorly than posteriorly.…”

Section: Discussionsupporting

confidence: 88%

Comparisons of Preoperative Three-Dimensional Planning and Surgical Reconstruction in Primary Cementless Total Hip Arthroplasty

Hassani

Cherix

et al. 2014

The Journal of Arthroplasty

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Reconstruction of important parameters such as femoral offset and torsion is inaccurate, when templating is based on plain x-rays. We evaluate intraoperative reproducibility of pre-operative CT-based 3D-templating in a consecutive series of 50 patients undergoing primary cementless THA through an anterior approach. Pre-operative planning was compared to a postoperative CT scan by image fusion. The implant size was correctly predicted in 100% of the stems, 94% of the cups and 88% of the heads (length). The difference between the planned and the postoperative leg length was 0.3 + 2.3 mm. Values for overall offset, femoral anteversion, cup inclination and anteversion were 1.4 mm ± 3.1, 0.6° ± 3.3°, -0.4° ± 5° and 6.9° ± 11.4°, respectively. This planning allows accurate implant size prediction. Stem position and cup inclination are accurately reproducible.

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Section: Discussionsupporting

confidence: 88%

Comparisons of Preoperative Three-Dimensional Planning and Surgical Reconstruction in Primary Cementless Total Hip Arthroplasty

Hassani

Cherix

et al. 2014

The Journal of Arthroplasty

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“…Third, the angles and reference lines were determined manually on the digital radiograph. On some radiographs, it was difficult to determine the inferior point of the teardrop figure for the horizontal reference line, so an alternative to this would be to use the interobturator, which a previous study reported as revealing the least amount of variance28). Fourth, because of no control group is present we cannot rule out the possibility that some part of the results might be associated with other factors.…”

Section: Discussionmentioning

confidence: 96%

Accuracy and Reliability of Preoperative On-screen Templating Using Digital Radiographs for Total Hip Arthroplasty

et al. 2016

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PurposePreoperative on-screen templating is a method of using acetate templates on digital images. The aim of the present study was to evaluate the accuracy, intra- and interobserver reliabilities of preoperative on-screen templating using digital radiographs for total hip arthroplasty (THA).Materials and MethodsTwo hundred patients with hip disease who were treated with primary cementless THA were retrospectively evaluated. The accuracy of on-screen templating was assessed by comparing the predicted prosthesis sizes with the actual sizes used operatively. The inter- and intraobserver reliabilities of the templating results were also evaluated.ResultsThe prosthesis prediction accuracy within ±one size was 96.6% for the cup size and 97.8% for the stem size. The inter- and intraobserver reliabilities for the implant size were substantial (kappa>0.70). The intra- and interobserver reliabilities for the leg length discrepancy and femoral offset difference using the intraclass correlation coefficient ranged from 0.89 to 0.97.ConclusionPreoperative on-screen templating using digital radiographs showed substantial accuracy and reliability for implant prediction. It is an effective method for predicting the size of implant, correcting the leg length discrepancy and restoring the femoral offset.

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“…Meermans et al[19] found that the horizontal line through the teardrops offers a more accurate reference marker when compared to the line between the two ischial tuberosities. However, Tripuraneni et al[20] concluded that the teardrop line is most commonly prone to measurement errors and that the obturator line would be the most accurate reference. In our study, the biischial line was used as an anatomical landmark for LLD assessment.…”

Section: Discussionmentioning

confidence: 99%

Digital templating in total hip arthroplasty: Additional anteroposterior hip view increases the accuracy

Stigler¹,

Müller²,

Pfaud³

et al. 2017

WJO

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AIMTo analyze planning total hip arthroplasty (THA) with an additional anteroposterior hip view may increases the accuracy of preoperative planning in THA.METHODSWe conducted prospective digital planning in 100 consecutive patients: 50 of these procedures were planned using pelvic overview only (first group), and the other 50 procedures were planned using pelvic overview plus antero-posterior (a.p.) hip view (second group). The planning and the procedure of each patient were performed exclusively by the senior surgeon. Fifty procedures with retrospective analogues planning were used as the control group (group zero). After the procedure, the planning was compared with the eventually implanted components (cup and stem). For statistic analysis the χ2 test was used for nominal variables and the t test was used for a comparison of continuous variables.RESULTSPreoperative planning with an additional a.p. hip view (second group) significantly increased the exact component correlation when compared to pelvic overview only (first group) for both the acetabular cup and the femoral stem (76% cup and 66% stem vs 54% cup and 32% stem). When considering planning ± 1 size, the accuracy in the second group was 96% (48 of 50 patients) for the cup and 94% for the stem (47 of 50 patients). In the analogue control group (group zero), an exact correlation was observed in only 1/3 of the cases.CONCLUSIONDigital THA planning performed by the operating surgeon and based on additional a.p. hip view significantly increases the correlation between preoperative planning and eventual implant sizes.

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Common Errors in the Execution of Preoperative Templating for Primary Total Hip Arthroplasty

Cited by 29 publications

References 17 publications

Comparisons of Preoperative Three-Dimensional Planning and Surgical Reconstruction in Primary Cementless Total Hip Arthroplasty

Comparisons of Preoperative Three-Dimensional Planning and Surgical Reconstruction in Primary Cementless Total Hip Arthroplasty

Accuracy and Reliability of Preoperative On-screen Templating Using Digital Radiographs for Total Hip Arthroplasty

Digital templating in total hip arthroplasty: Additional anteroposterior hip view increases the accuracy

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