Korean J Orthod.  2008 Feb;38(1):52-59. 10.4041/kjod.2008.38.1.52.

Skeletal maturation associated with the fourth cervical vertebra and menarcheal timing

• Lee KH
• Hwang YI
• Kim YJ
• Park YH
• Baek SH
• Cha KS

• KMID: 1481505
• DOI: http://doi.org/10.4041/kjod.2008.38.1.52

Abstract

OBJECTIVE
This study analyzed the morphologic changes of the fourth cervical vertebra body to determine the skeletal age of orthodntic patients during growth.
METHODS
Eighty-one female patients aged from 11 to 14 who had cephalograms taken on the same day were examined. The subjects were divided into three groups depending on the depth of the concavity of the lower border of the fourth cervical vertebra (Group A: less than 1.05 mm, Group B: 1.05 - 2.07 mm, Group C: greater than 2.07 mm). Menarcheal timing, SMI stage, length, width and ratio of length and width of the fourth cervical vertebra body were analyzed and the following results were obtained.
RESULTS
The average SMI stage of group A,B and C were 5.67 +/- 2.57, 8.73 +/- 2.41, and 10.00 +/- 1.47, respectively. Length, width, ratio of length and width, and SMI stage were greater in group B than group A and in group C than group B. Mean menarcheal timing was 11.64 +/- 0.92 years. Concavity depth, length, width, ratio of length and width showed a significant positive correlation with SMI stage, especially with the concavity depth.
CONCLUSION
The results of this study propose a simple method for determining the timing of orthopedic treatment by measuring the concavity depth of the fourth cervical vertebra on the cephalogram.

Keyword

Cervical vertebra; Hand-wrist; Menarche; Skeletal maturation

MeSH Terms

Aged
Female
Humans
Menarche
Orthopedics
Spine

Figure

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  Fig 1 Measurements of the 4th cervical vertebra.

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  Fig 2 Scattergram of concavity of 4th cervical vertebra and hand-wrist stage; *p < 0.01.

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