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.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
Total Visit :9,720,441
Total Download :4,077,564
Today View :369
Ajou University Medical Information & Media Center 164 Worldcup-ro Yeongtong-gu Suwon 16499 Korea / TEL : 031-219-5312 / FAX : 031-219-5314 Copyright (c) Ajou University Medical Information & Media Center All Rights Reserved. AJOU Open Repository는 국립중앙도서관 OAK 보급사업으로 구축되었습니다.