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Acetabular socket size templating with femoral head diameter and pelvic x-ray A novel surgical technique
EP31137
Poster Title: Acetabular socket size templating with femoral head diameter and pelvic x-ray A novel surgical technique
Submitted on 01 Jan 2020
Author(s): Kalaivanan Kanniyan , Shantanu Patil , Ashok Kumar PS, Vijay C Bose , Suryanarayan Pitchai
Affiliations: Asian Joint Reconstruction Institute , AJRI @ SIMS Hospitals , chennai , India
This poster was presented at SICOT International meeting , Muscat , Oman December 2019
Poster Views: 125
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Poster Information
Abstract: Aim : To assess the reliability of correlation between femoral head diameter measurement and radiological hip joint space in templating “Acetabular socket size”, while doing Total Hip Replacement (THR).

Background: Templating is an essential part of preplanning. Digital templating is costly and not universally available with high inter and intra person observational variations. Templating method should be accurate , easily reproducible with time efficiency.
Material and Methods: 31 patients who underwent THR were included in this study. All the native femoral head diameter were measured in millimetre (mm) and numerically valued as A , the presence (+2 mm) or absence (0mm) of radiological hip joint space in x-ray was numerically valued as B. A + B gave the predicted Acetabular socket size which is numerically valued as Y. The Actually used Acetabular socket size was numerically valued as X. The correlation between the two factors, predicted Acetabular socket size (Y) and actually used Acetabular socket size valued as X , were statistically worked with Pearson correlation ( 2 tailed ) method.
Results : The statistics final report shows a significant correlation at the 0.01 level with 2-tailed pearson correlation method. The study was found independent of the factors like age and sex of the patient with less interpersonal observational variation. Using this on table real time templating method. The acetabular socket size (X) is found to be either Y( measured femoral head diameter plus hip joint space value) or Y+2.
Conclusion : This novel technique acts as real time template with good accuracy , reproducibility and time efficiency. It avoids intra operative over reaming and its complications. It helps in preserving hip bone which is very much crucial for future revision scenarios.
Summary: This technique is first of its kind to be described. This novel technique acts as real time template with good accuracy , reproducibility and time efficiency. It avoids intra operative over reaming and its complications. It helps in preserving hip bone which is very much crucial for future revision scenarios. References: 1. Petretta, Robert et al. “Acetate templating on digital images is more accurate than computer-based templating for total hip arthroplasty.” Clinical orthopaedics and related research vol. 473,12 (2015): 3752-9doi:10.1007/s11
2. Alnahhal, Amro et al. “Templating Hip Arthroplasty.” Open access Macedonian journal of medical sciences vol. 7,4 672-685. 23 Feb. 2019, doi:10.3889/oamjms.2019.088
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