• Injury · Feb 2024

    Review

    Lessons learned from biomechanical studies on cephalomedullary nails for the management of intertrochanteric fractures. A scoping review.

    • Jorge Mayor, Vera Birgel, Jan-Dierk Clausen, Gökmen Aktas, Stephan Sehmisch, Ann-Kathrin Einfeldt, Vasilis Giannoudis, Ahmed H K Abdelaal, and Emmanouil Liodakis.
    • Department of Trauma Surgery, Hannover Medical School, Carl-Neuberg Str. 1, Hannover D-30625, Germany. Electronic address: mayorramirez.jorge@mh-hannover.de.
    • Injury. 2024 Feb 1; 55 (2): 111180111180.

    IntroductionThe increasing socioeconomic need for optimal treatment of hip fractures in combination with the high diversity of available implants has raised numerous biomechanical questions. This study aims to provide a comprehensive overview of biomechanical research on the treatment of intertrochanteric fractures using cephalomedullary devices.MethodsFollowing the PRISMA-P guidelines, a systematic literature search was performed on 31.12.2022. The databases PubMed/MEDLINE and Web of Science were searched. Scientific papers published between 01.01.2000 - 31.12.2022 were included when they reported data on implant properties related to the biomechanical stability for intertrochanteric fractures. Data extraction was undertaken using a synthesis approach, gathering data on criteria of implants, sample size, fracture type, bone material, and study results.ResultsThe initial search identified a total of 1459 research papers, out of which forty-three papers were considered for final analysis. Due to the heterogeneous methods and parameters used in the included studies, meta-analysis was not feasible. A comprehensive assessment of implant characteristics and outcome parameters was conducted through biomechanical analysis. Various factors such as proximal and distal locking, nail diameter and length, fracture model, and bone material were thoroughly evaluated.ConclusionThis scoping review highlights the need for standardization in biomechanical studies on intertrochanteric fractures to ensure reliable and comparable results. Strategies such as avoiding varus, maintaining a sufficient tip-apex-distance, cement augmentation, and optimizing lesser trochanteric osteosynthesis enhance construct stability. Synthetic alternatives may offer advantages over cadaveric bone. Further research and meta-analyses are required to establish standardized protocols and enhance reliability.Copyright © 2023 Elsevier Ltd. All rights reserved.

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