Fig 3 -

(a) the model of septal L-strut design with dimensions and measurement points. (adapted from Lee et al., 2015 [24]) (b) the boundary conditions for mechanical deformation analysis.</p

Mechanical properties of septal cartilage bone.

PurposeThis study contributes to the multidisciplinary understanding of septal L-strut reshaping and introduces innovative surgical design concepts based on engineering principles of static equilibrium. The objective is to enhance structural strength and stability, ultimately leading to improved surgical outcomes.MethodFinite element analysis is employed to model the three-dimensional septal cartilage in septoplasty. A significant contribution of this work is the introduction of an innovative redesigns for the septal L-strut structure. These redesigns represent the first-ever attempt to incorporate the center of gravity theory into the modeling of the septal L-strut.ResultsOur findings emphasize the significance of attaining a lower center of gravity in the design of the septal L-strut, as it contributes to optimal core strength and stability. To achieve this, we recommend widening the caudal septum and shaping the interior fillet corner to its maximum size, taking into account its specific shape. Notably, the utilization of a standard 20x20 mm septal L-strut, the C-shaped technique, and the septal support graft technique provide superior strength due to enhanced basement support.ConclusionTo enhance surgical outcomes in septal L-strut procedures, design modifications are proposed to improve strength and stability, resulting in optimized performance. Recommendations include widening the caudal septum and incorporating fillet shapes in the geometry to lower the center of gravity.</div

Total displacement at point B (mm), vary with different dimensions, displacement at point A is fixed at 1 mm.

Total displacement at point B (mm), vary with different dimensions, displacement at point A is fixed at 1 mm.</p

Fig 14 -

The comparison of total displacement between standard and new techniques, under loading force of 20 g (a) standard technique of 10 x 10 mm (b) design A: septal support graft (invented technique in this study) (c) design B: straight C-shaped [17] (d) design C: slope C-shaped [17].</p

Fig 12 -

(a) Total displacement (mm) (b) Total elastic strain energy (mJ), vary with different fillet radius, loading force is fixed at 20 g.</p

Fig 8 -

(a) Total displacement (mm) (b) Total elastic strain energy (mJ), vary with different dimensions (dorsal and caudal septum), loading force is fixed at 20 g.</p

Von Mises stress distribution of models with different cutting angle, loading force is fixed at 20 g.

Von Mises stress distribution of models with different cutting angle, loading force is fixed at 20 g.</p

Illustration of residual dimension of septal L-strut.

Illustration of residual dimension of septal L-strut.</p

Grid independence study.

PurposeThis study contributes to the multidisciplinary understanding of septal L-strut reshaping and introduces innovative surgical design concepts based on engineering principles of static equilibrium. The objective is to enhance structural strength and stability, ultimately leading to improved surgical outcomes.MethodFinite element analysis is employed to model the three-dimensional septal cartilage in septoplasty. A significant contribution of this work is the introduction of an innovative redesigns for the septal L-strut structure. These redesigns represent the first-ever attempt to incorporate the center of gravity theory into the modeling of the septal L-strut.ResultsOur findings emphasize the significance of attaining a lower center of gravity in the design of the septal L-strut, as it contributes to optimal core strength and stability. To achieve this, we recommend widening the caudal septum and shaping the interior fillet corner to its maximum size, taking into account its specific shape. Notably, the utilization of a standard 20x20 mm septal L-strut, the C-shaped technique, and the septal support graft technique provide superior strength due to enhanced basement support.ConclusionTo enhance surgical outcomes in septal L-strut procedures, design modifications are proposed to improve strength and stability, resulting in optimized performance. Recommendations include widening the caudal septum and incorporating fillet shapes in the geometry to lower the center of gravity.</div

Fig 1 -

(a) Deviated nasal septum (b) Reshaped nasal septum.</p