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Ipsilateral Hypertrophy of the Mastoid Process in Surgical Cases of Congenital Muscular Torticollis

Kim, HG | Yim, SY
The Cleft palate-craniofacial journal, 56(10). : 1295-1301, 2019
Journal Title
The Cleft palate-craniofacial journal
OBJECTIVE: This study was to investigate ipsilateral hypertrophy of the mastoid process in the patients with congenital muscular torticollis (CMT).
DESIGN: Retrospective cross-sectional study.
PATIENTS: Children with CMT.
METHODS: A total of 212 surgical cases of patients with CMT (age: 50.9 +/- 44.3 months) and 212 age- and gender-matched controls (age: 50.4 +/- 44.2 months) were included. The mastoid process volume was calculated and compared for both groups on the computed tomography axial images. A linear regression analysis was performed between the age and the intrasubject volume difference in the mastoid process.
RESULTS: The volume of the mastoid process in the CMT side was significantly larger than that of the non-CMT side in the CMT group (32.2 +/- 30.3 cm(3) vs 21.9 +/- 22.8 cm(3): P < .001). In the control group, there was no significant difference between the volume of the right and left mastoid process (21.6 +/- 24.6 cm(3) vs 21.2 +/- 23.8 cm(3): P = .472). The intrasubject volume difference in the mastoid process in the CMT group showed a linear increase with the age (adjusted R (2) = 0.286: P < .001), and the volumetric asymmetry of the mastoid process became more severe over age compared to the control group.
CONCLUSION: We showed ipsilateral hypertrophy of the mastoid process in patients with CMT and demonstrated that the volumetric asymmetry increased with age.


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Journal Papers > School of Medicine / Graduate School of Medicine > Physical Medicine & Rehabilitation
Ajou Authors
임, 신영
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