The linea aspera as a guide for femoral rotation after tumor resection: is it directly posterior? A technical note
| Autor: | Hiroyuki Tsuchiya, Akihiko Takeuchi, Shinji Miwa, Katsuhiro Hayashi, Ahmed Hamed Kassem Abdelaal, Yoshitomo Kajino, Norio Yamamoto, Ahmad Fawaz Morsy |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male 0301 basic medicine Linea aspera medicine.medical_specialty Adolescent Rotation Arthroplasty Replacement Hip Femoral Neoplasms Linea Intraoperative guide for posterior 03 medical and health sciences 0302 clinical medicine medicine Humans Orthopedics and Sports Medicine Femur Child Aged Femoral neck Angle of rotation 030222 orthopedics business.industry Anatomy Middle Aged Surgery medicine.anatomical_structure Orthopedic surgery Female Original Article Crest Tumor resection 030101 anatomy & morphology Anatomic Landmarks Tomography X-Ray Computed business |
| Zdroj: | Journal of Orthopaedics and Traumatology : Official Journal of the Italian Society of Orthopaedics and Traumatology |
| ISSN: | 1590-9999 1590-9921 |
| DOI: | 10.1007/s10195-016-0399-6 |
| Popis: | Background The linea aspera is the rough, longitudinal crest on the posterior surface of the femoral shaft. Most orthopedic surgeons depend on the linea aspera as an intraoperative landmark identifying the true posterior aspect of the femur. We investigated the position of the linea aspera to verify whether the surgeon can rely on this accepted belief. Material and method One hundred and thirty-three femora from 73 patients were evaluated. Four CT cuts were done of the mid femur, and we measured the angle of rotation of the linea aspera at each cut. Results The linea aspera was externally rotated in most femora evaluated; average angles of rotation were 15.4°, 14°, 11.7°, and 11.5° at 10, 15, 20, and 25 cm from the intercondylar line, respectively. The angle of rotation of the linea aspera was positively correlated with femoral neck anteversion angle and negatively with age. Conclusion The linea aspera is exactly posterior in a minority of individuals, while it is externally rotated to varying degrees in the majority of individuals. The degree of rotation was positively correlated with femoral neck anteversion angle, and negatively with age. To avoid implant malrotation, accurate estimation of the rotation angle should be determined preoperatively. Level of evidence Level IV. |
| Databáze: | OpenAIRE |
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