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Original Articles
- The Determination of Optimal Entry Point for Proximal Femoral Nail Antirotation-II by Fluoroscopic Simulation: A Cadaveric Study
- Jin Hoon Jeong, Gu Hee Jung
- J Korean Fract Soc 2017;30(4):173-179. Published online October 31, 2017
- DOI: https://doi.org/10.12671/jkfs.2017.30.4.173
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Abstract
PDF - PURPOSE
This study seeks to determine the anatomically optimal entry point of proximal femoral nail antirotation-II (PFNA-II®) according to geographic features of Korean cadaveric femoral trochanters for successful reduction of osteoporotic proximal femoral fractures.
MATERIALS AND METHODS
Forty-three adult cadaveric femurs without previous fractures or surgeries were included. Anteroposterior (AP) and lateral images of all femurs and PFNA-II® were taken with an image intensifier. Using the image synthesis process via the image editing program (Adobe Photoshop CS6), the optimal entry point was verified and compared with the tip of the greater trochanter (GT) and the cervicotro-chanteric junction on AP images, as well as the width of the trochanter and the neck on lateral images.
RESULTS
The optimal entry point of PFNA-II® was an average distance of 9.1 mm (range, 7–15 mm) medially from the tip of GT on AP images. The center of the nail was located at an average of 30% (range, 21%–44%) area from the posterior margin of the middle neck, which is an average area of 38% (range, 26%–48%) from the posterior cortex of the trochanter on lateral images. Furthermore, the ideal entry point was at the extended line of the cervico-trochanteric junction.
CONCLUSION
The optimal entry point, which was found to be medial to the tip of the GT and posterior to the center of the middle femoral neck and the trochanter, was at on the extended line of the cervicotrochanteric junction. -
Citations
Citations to this article as recorded by
- Clinical Research through Computational Anatomy and Virtual Fixation
Ju Yeong Kim, Dong-Geun Kang, Gu-Hee Jung
Journal of the Korean Orthopaedic Association.2023; 58(4): 299. CrossRef - Does the Entry Point of Proximal Femoral Nail Antirotation Affect the Malalignment of Intertrochanteric Fracture? A Cadaveric Study
Chittawee Jiamton, Nonpawit Nimmankiatkul, Pongsakorn Rungchamrassopa, Wichan Kanchanatawan, Pariyut Chiarapatanakom, Wirat Kongcharoensombat
Journal of Southeast Asian Orthopaedics.2022;[Epub] CrossRef
- Clinical Research through Computational Anatomy and Virtual Fixation
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- Treatment of the Femoral Fracture Using Sirus(R) Nail: A Comparison of Complication according to the Entry Potal
- Young Yool Chung, Dong Hyuk Choi, Dae Hyun Yoon, Jung Ho Lee, Ji Hun Park
- J Korean Fract Soc 2015;28(2):103-109. Published online April 30, 2015
- DOI: https://doi.org/10.12671/jkfs.2015.28.2.103
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Abstract
PDF
- PURPOSE
The purpose of this study is to analyze the clinical results of fixation using Sirus(R) nail in patients with femoral subtrochanteric and shaft fracture and the difference in the frequency of complications according to the entry portal.
MATERIALS AND METHODS
From July 2006 to August 2013, at least 1-year clinical follow-up, we retrospectively analyzed 36 cases with femoral subtrochanteric (15 cases) and shaft fracture (21 cases) who underwent surgery using Sirus(R) nail. We reviewed the records of operation time, intra-operative amounts of bleeding and complications. At last follow-up, we reviewed clinical results by Ray-Sanders criteria and analyzed the periods of bone union on the radiograph. We also measured changing of the femoral neck-shaft angle in the subtrochanteric fractures and angulation in the shaft fractures, respectively. Considering anatomical variation of the trochanter and fracture position of subtrochanteric and femoral shaft, entry points were divided into subgroups, and the clinical results were compared.
RESULTS
The mean Ray-Sanders score was 27.4, 27 cases (75.0%) were good or excellent. The mean periods of bone union was 21.1 weeks in 31 cases. The mean neck-shaft angles were 135.7o preoperatively, 130.2o postoperatively. The mean angulation of the femur was 24.4o preoperatively, 2.4o postoperatively in patients of femoral shaft fractures. Despite no statistical significance, greater trochanter tip entry point and lateral entry point had a higher rate of frequency than medial entry point, with respect to the occurrence of iatrogenic fracture and malalignment.
CONCLUSION
Using Sirus(R) nail for femoral subtrochanteric and shaft fractures showed good clinical and radiographic results and a high rate of union. Medial entry point yielded slightly better results in the occurrence of iatrogenic fracture and malalignment, compared to greater trochanter tip entry point and lateral entry point.
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