Key result
The interlocking dual screws nail (InterTAN) demonstrated enhanced strength, rotational control, reduced varus collapse, and improved survivability compared to traditional fixation methods.
Why the study?
The biomechanical strengths and limitations of the interlocking dual screws nail for pertrochanteric fractures in human cadaveric specimens were not fully illustrated.
Does the interlocking dual screws nail provide better biomechanical stability compared to traditional fixation methods in human cadaveric specimens with pertrochanteric fractures?
Systematic Review
Does the interlocking dual screws nail provide better biomechanical stability compared to traditional fixation methods in human cadaveric specimens with pertrochanteric fractures?
The interlocking dual screws nail demonstrates superior biomechanical properties, including enhanced strength and rotational control, compared to traditional fixation methods for pertrochanteric fractures in cadaveric models.
Supports clinical trial evaluation of dual-screw nails; leaves open whether cadaveric stability improves patient outcomes.
INTRODUCTION: A modern intramedullary nail design proposed to treat the pertrochanteric fractures was the interlocking dual screws nail. It provides interfragmentary compression through an additional compression screw during implantation. It showed promising results in terms of clinical outcome, complications, and reoperation rate. The aim of this systematic review is to illustrate the biomechanical strengths and limitations of the interlocking dual screws nail (InterTAN nail, Smith and Nephew, Memphis, USA) and clarify its efficacy in providing stable fixation and promoting the biological conditions conducive to fracture union.EVIDENCE ACQUISITION: The systematic research was performed through MEDLINE and EMBASE databases, for studies up to Novembre 1st 2023. The combinations of keyword were: “Biomechanical Phenomena[Mesh]”, “InterTAN” and “biomechanics”. Were included articles regarding biomechanical analysis on the InterTAN nail for pertrochanteric fractures in human cadaveric specimens. Articles in language different from English, articles published in not peer-reviewed journal, systematic reviews, and meta-analysis were excluded.EVIDENCE SYNTHESIS: Overall, nailing system emerges as a promising option, offering enhanced strength and rotational control, reduced varus collapse, and improved survivability compared to traditional fixation methods like DHS and SHS, as well as alternative systems like PCCP.CONCLUSIONS: The reviewed articles provide encouraging biomechanical outcomes in terms of Limit load, Torsional properties, Rigidity and Strength of the Interlocking Lag screw Design Nail.
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Leggieri et al. (2024) conducted a systematic review in pertrochanteric fractures. Interlocking dual screws nail (InterTAN nail) vs. Traditional fixation methods (DHS, SHS) and alternative systems (PCCP) was evaluated on Limit load, Torsional properties, Rigidity and Strength. The interlocking dual screws nail (InterTAN) demonstrated enhanced strength, rotational control, reduced varus collapse, and improved survivability compared to traditional fixation methods.
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