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Precision of posttraumatic primary orbital reconstruction using individually bent titanium mesh with and without navigation: a retrospective study.

Essig H, Dressel L, Rana M, Rana M, Kokemueller H, Ruecker M, Gellrich NC - Head Face Med (2013)

Bottom Line: Orbital volume of the unaffected side ranged from 26.6 ml±2.8 ml in male and 25.2 ml±2.6 ml in female (CT).Significant orbital enlargement was found in orbital fractures with involvement of the posterior third of the orbital floor and in comminuted fracture pattern.Reconstructed orbital volume ranged from 26.9±2.7 ml in male and 24.26±2.5 ml in female (CBCT). 3D Analysis of the color mapping showed minor deviations compared to the mirrored unaffected side.

View Article: PubMed Central - HTML - PubMed

ABSTRACT

Background: The aim of orbital wall reconstruction is to reestablish anatomically exact orbital volumes to avoid long-term complications. Navigation could facilitate complex reconstructions.

Methods: Quality of the orbital reconstruction (n=94) was measured based on (A) volume changes and (B) on 3D shape deviations compared to the unaffected side. Volume analysis included segmentation of the orbital cavity in the pre- and post-operative 3D data set (VoXim®, IVS Solutions, Germany), and shape analysis was performed by vector-based 3D tools (Comparison®, 3Dshape, Germany).

Results: Orbital volume of the unaffected side ranged from 26.6 ml±2.8 ml in male and 25.2 ml±2.6 ml in female (CT). Significant orbital enlargement was found in orbital fractures with involvement of the posterior third of the orbital floor and in comminuted fracture pattern. Reconstructed orbital volume ranged from 26.9±2.7 ml in male and 24.26±2.5 ml in female (CBCT). 3D Analysis of the color mapping showed minor deviations compared to the mirrored unaffected side.

Conclusion: Measurements demonstrate that even in comminuted orbital fractures true-to-original reconstruction is feasible.

No MeSH data available.


Related in: MedlinePlus

Deviation of reconstruction.
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Figure 8: Deviation of reconstruction.

Mentions: Three-dimensional analysis of the reconstructed area compared to the pre-operative planning is divided into 9 different regions: every orbital wall except of the orbital roof (medial orbital wall, orbital floor, lateral orbital wall) was sectioned into 3 proportional regions and labeled into anterior third, central third, and posterior third. Virtual plannings of the patients of the navigation group (Navi; n = 60) were superimposed to the post-operative result. Deviation of the minimal perpendicular distance was measured color-coded and converted into millimeters. The proportion of the reconstruction material (titanium mesh implant) compared to the size of the corresponding region was evaluated. Frequency of 3D analysed anatomical regions is displayed in Figure 7. Differences of the reconstructed medial orbital wall compared to the virtual planning were maximal in the anterior third (−0.05 ± 0.7 mm), of the orbital floor in the anterior third (0.27 ± 0.7 mm), and of the lateral orbital wall in the central third (−0.23 ± 0.753) (Figure 8).


Precision of posttraumatic primary orbital reconstruction using individually bent titanium mesh with and without navigation: a retrospective study.

Essig H, Dressel L, Rana M, Rana M, Kokemueller H, Ruecker M, Gellrich NC - Head Face Med (2013)

Deviation of reconstruction.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3750456&req=5

Figure 8: Deviation of reconstruction.
Mentions: Three-dimensional analysis of the reconstructed area compared to the pre-operative planning is divided into 9 different regions: every orbital wall except of the orbital roof (medial orbital wall, orbital floor, lateral orbital wall) was sectioned into 3 proportional regions and labeled into anterior third, central third, and posterior third. Virtual plannings of the patients of the navigation group (Navi; n = 60) were superimposed to the post-operative result. Deviation of the minimal perpendicular distance was measured color-coded and converted into millimeters. The proportion of the reconstruction material (titanium mesh implant) compared to the size of the corresponding region was evaluated. Frequency of 3D analysed anatomical regions is displayed in Figure 7. Differences of the reconstructed medial orbital wall compared to the virtual planning were maximal in the anterior third (−0.05 ± 0.7 mm), of the orbital floor in the anterior third (0.27 ± 0.7 mm), and of the lateral orbital wall in the central third (−0.23 ± 0.753) (Figure 8).

Bottom Line: Orbital volume of the unaffected side ranged from 26.6 ml±2.8 ml in male and 25.2 ml±2.6 ml in female (CT).Significant orbital enlargement was found in orbital fractures with involvement of the posterior third of the orbital floor and in comminuted fracture pattern.Reconstructed orbital volume ranged from 26.9±2.7 ml in male and 24.26±2.5 ml in female (CBCT). 3D Analysis of the color mapping showed minor deviations compared to the mirrored unaffected side.

View Article: PubMed Central - HTML - PubMed

ABSTRACT

Background: The aim of orbital wall reconstruction is to reestablish anatomically exact orbital volumes to avoid long-term complications. Navigation could facilitate complex reconstructions.

Methods: Quality of the orbital reconstruction (n=94) was measured based on (A) volume changes and (B) on 3D shape deviations compared to the unaffected side. Volume analysis included segmentation of the orbital cavity in the pre- and post-operative 3D data set (VoXim®, IVS Solutions, Germany), and shape analysis was performed by vector-based 3D tools (Comparison®, 3Dshape, Germany).

Results: Orbital volume of the unaffected side ranged from 26.6 ml±2.8 ml in male and 25.2 ml±2.6 ml in female (CT). Significant orbital enlargement was found in orbital fractures with involvement of the posterior third of the orbital floor and in comminuted fracture pattern. Reconstructed orbital volume ranged from 26.9±2.7 ml in male and 24.26±2.5 ml in female (CBCT). 3D Analysis of the color mapping showed minor deviations compared to the mirrored unaffected side.

Conclusion: Measurements demonstrate that even in comminuted orbital fractures true-to-original reconstruction is feasible.

No MeSH data available.


Related in: MedlinePlus