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Development of body proportions in achondroplasia: Sitting height, leg length, arm span, and foot length
Author(s) -
Merker Andrea,
Neumeyer Luitgard,
Hertel Niels Thomas,
Grigelioniene Giedre,
Mohnike Klaus,
Hagenäs Lars
Publication year - 2018
Publication title -
american journal of medical genetics part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.064
H-Index - 112
eISSN - 1552-4833
pISSN - 1552-4825
DOI - 10.1002/ajmg.a.40356
Subject(s) - arm span , achondroplasia , body proportions , sitting , foot (prosody) , anthropometry , body height , orthodontics , population , anatomy , medicine , body weight , mathematics , surgery , geometry , linguistics , philosophy , environmental health , pathology
The aims of this study was to construct references for sitting height, leg length, arm span, relative sitting height (sitting height/height), and foot length and to discuss the development for these anthropometric variables in achondroplasia. Sex‐specific references covering ±2 SD are presented for ages 2–20 years. Legs and arms in achondroplasia are already at 2 years of age considerably shorter than in the general population and this deviation increases with age. At adult ages, legs are almost 50% shorter than in the general population and arm span roughly 35% shorter. As sitting height is only mildly affected, relative sitting height position develops far beyond normal ranges. Foot length is also not as affected as limbs.