Correlation between head shape and volumetric changes following spring-assisted posterior vault expansion

Misier, Karan Ramdat; Breakey, Richard W. F.; Lande, Lara S. van de; Biffi, Benedetta; Knoops, Paul G.M.; Schievano, Silvia; Caron, Cornelia J.J.M.; Dunaway, David; Jeelani, Owase; Borghi, Alessandro

doi:10.1016/j.jcms.2021.05.004

Cited by 6 publications

(3 citation statements)

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“…Such methods has been used in the past to describe anatomical variations 23,31,32 in a patient population, as well as to assess and correlate shape with surgical outcomes. 15,22–24,33 The shape variations shown in Figure 4 highlight how the main mode of variations of this population qualitatively relate to the severity of scaphocephaly (Mode 1) and forehead prominence (Mode 3). The OHS rating correlated with the Mode 1 of variation within the patient population (r = − 0.66) and such correlation was comparable with that of the CI (r = − 0.68), and TI (r = 0.63) as well as average posterior horizontal curvature (r = − 0.67).…”

Section: Discussionmentioning

confidence: 96%

“…Recent works have introduced assessment of shape change and outcome of surgical craniosynostosis correction by means of SSM. 6,15,[22][23][24] Surgical planning of scaphocephaly correction has been performed in the past by means of 3D-printed models 25 as well as using virtual planning 26 ; more recently, finite element modeling (FEM) was introduced to plan cranial reshaping [27][28][29] as well as SAC. 7,17,30 FEM allows virtual planning of surgical correction strategies by allowing to test the effect of osteotomy locations and distractor selection on the overall calvarial shape as well as localized features.…”

Section: Discussionmentioning

confidence: 99%

“…Recent works have introduced assessment of shape change and outcome of surgical craniosynostosis correction by means of SSM. 6,15,22–24…”

Section: Discussionmentioning

confidence: 99%

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The Esthetic Perception of Morphological Severity in Scaphocephalic Patients is Correlated With Specific Head Geometrical Features

Borghi

Heutinck

Rodríguez-Flórez

et al. 2022

The Cleft Palate Craniofacial Journal

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Objective To investigate the relationship between perception of craniofacial deformity, geometric head features, and 3D head shape analyzed by statistical shape modeling (SSM). Patients A total of 18 unoperated patients with scaphocephaly (age = 5.2 ± 1.1m)—6 were followed-up after spring-assisted cranioplasty (SAC) (age = 9.6 ± 1.5m)—and 6 controls (age = 6.7 ± 2.5m). Main Outcome Measures 3D head shapes were retrieved from 3D scans or computed tomography (CTs). Various geometrical features were measured: anterior and posterior prominence, take-off angle, average anterior and posterior lateral and horizontal curvatures, cranial index (CI) (cranial width over length), and turricephaly index (TI) (cranial height over length). SSM and principal component analysis (PCA) described shape variability. All models were 3D printed; the perception of deformity was blindly scored by 9 surgeons and 1 radiologist in terms of frontal bossing (FB), occipital bulleting (OB), biparietal narrowing (BN), low posterior vertex (LPV), and overall head shape (OHS). Results A moderate correlation was found between FB and anterior prominence (r = 0.56, P < .01) and take-off angle (r = − 0.57, P < .01). OB correlated with average posterior lateral curvature (r = 0.43, P < 0.01) similarly to BPN (r = 0.55, P < .01) and LPV (r = 0.43, P < .01). OHS showed strong correlation with CI (r = − 0.68, P < .01) and TI (r = 0.63, P< .01). SSM Mode 1 correlated with OHS (r = 0.66, p < .01) while Mode 3 correlated with FB (r = − 0.58, P < .01). Conclusions Esthetic cranial appearance in craniofacial patients is correlated to specific geometric parameters and could be estimated using automated methods such as SSM.

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