Accuracy of 2D Digital Templating for Total Hip Arthroplasty in Patients With Crowe Type-4 Dysplastic Hips.
- 1Department of Orthopaedics and Traumatology, Medical Park Maltepe Hospital, İstanbul, Turkey.
- 2Department of Orthopaedics and Traumatology, Baltalimani Bone and Joint Diseases Training and Research Hospital, İstanbul, Turkey.
- 3Department of Orthopaedics and Traumatology, Ege University School of Medicine, İzmir, Turkey.
Abstract
Background
There is a paucity of studies reporting the outcomes of preoperative digital templating in Crowe type 4 hips. The aim of this study was to evaluate the accuracy and clinical role of digital templating applied in Crowe type 4 hips.Methods
Patient data were obtained from electronic patient records covering the period from January 2016 to December 2019. Data on side, gender, and age, the amount of femoral shortening, and the size of the implants were noted. Upon two dimensional (2D) digital templating, femoral implant size and positioning, length of femoral shortening, and acetabular implant size and positioning were predicted. The agreement for acetabular size, femoral size, and femoral shortening measurements was tested both for the senior arthroplasty surgeon and the senior resident.Results
Senior surgeon templating demonstrated moderate agreement with implanted acetabular (κ = 0.410) and femoral (κ = 0.432) component sizes, outperforming the senior resident (acetabular κ = 0.071; femoral κ = 0.265). Exact acetabular and femoral size prediction by the senior surgeon was 74% and 36%, respectively. Femoral shortening agreement was moderate for the surgeon (intraclass correlation coefficient [ICC] = 0.544) and fair for the resident (ICC = 0.400), whereas interobserver agreement for shortening was excellent (ICC = 0.958).Conclusions
The accuracy of 2D digital templating for predicting component size in total hip arthroplasty for Crowe type IV dysplastic hips was limited. Nevertheless, when performed by an experienced surgeon, 2D digital templating remains a valuable preoperative planning tool for planning and estimating the required femoral shortening, while final implant selection should be based on intraoperative findings.
Related
- Impact of intertrochanteric bone mineral density on the accuracy of preoperative templating in cementless total hip arthroplasty: a retrospective cohort study of 510 hips.
- From Measured Accuracy to Patient Outcome: Navigation in Total Hip Arthroplasty and Molecular Diagnosis of Periprosthetic Joint Infection: A Narrative Review
- Increased Accuracy of Acetabular Cup Positioning with an Automatic Impaction Device in Total Hip Arthroplasty
- Accuracy of intraoperative limb length control using the NaviFast 6D system in total hip arthroplasty
- Efficacy of a smartphone digital therapeutic (re-R) for post-total knee arthroplasty rehabilitation: study protocol for a single-center randomized controlled trial in the Republic of Korea
BibTeX
@article{danacı2026accuracy,
title = {{Accuracy of 2D Digital Templating for Total Hip Arthroplasty in Patients With Crowe Type-4 Dysplastic Hips.}},
author = {Ahmet Danacı and Ferdi Dırvar and Arman Vahabi and Atakan Ezici and Yakup Alpay and Sarper Gürsu},
journal = {Arthroplasty today},
year = {2026},
month = oct,
doi = {10.1016/j.artd.2026.102182},
url = {https://europepmc.org/article/MED/42926950},
note = {CC BY},
}
RIS
TY - JOUR
TI - Accuracy of 2D Digital Templating for Total Hip Arthroplasty in Patients With Crowe Type-4 Dysplastic Hips.
AU - Ahmet Danacı
AU - Ferdi Dırvar
AU - Arman Vahabi
AU - Atakan Ezici
AU - Yakup Alpay
AU - Sarper Gürsu
PY - 2026
DA - 2026/10/18
JO - Arthroplasty today
DO - 10.1016/j.artd.2026.102182
UR - https://europepmc.org/article/MED/42926950
AB - Background There is a paucity of studies reporting the outcomes of preoperative digital templating in Crowe type 4 hips. The aim of this study was to evaluate the accuracy and clinical role of digital templating applied in Crowe type 4 hips.Methods Patient data were obtained from electronic patient records covering the period from January 2016 to December 2019. Data on side, gender, and age, the amount of femoral shortening, and the size of the implants were noted. Upon two dimensional (2D) digital templating, femoral implant size and positioning, length of femoral shortening, and acetabular implant size and positioning were predicted. The agreement for acetabular size, femoral size, and femoral shortening measurements was tested both for the senior arthroplasty surgeon and the senior resident.Results Senior surgeon templating demonstrated moderate agreement with implanted acetabular (κ = 0.410) and femoral (κ = 0.432) component sizes, outperforming the senior resident (acetabular κ = 0.071; femoral κ = 0.265). Exact acetabular and femoral size prediction by the senior surgeon was 74% and 36%, respectively. Femoral shortening agreement was moderate for the surgeon (intraclass correlation coefficient [ICC] = 0.544) and fair for the resident (ICC = 0.400), whereas interobserver agreement for shortening was excellent (ICC = 0.958).Conclusions The accuracy of 2D digital templating for predicting component size in total hip arthroplasty for Crowe type IV dysplastic hips was limited. Nevertheless, when performed by an experienced surgeon, 2D digital templating remains a valuable preoperative planning tool for planning and estimating the required femoral shortening, while final implant selection should be based on intraoperative findings.
SN - 2352-3441
ER -