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Year : 1995
Tome : 146
Volume : 10
Pages : 681-688
Title : Growth of the radius in sheep. An experimental model for monitoring activity of the growth plates
Authors : E.ASIMUS, J. SALES de GAUZY, D. MATHON, F. BOURGEOIS, R. DARMANA, J. Ph. CAHUZAC et A. AUTEFAGE
Summary : This study documents growth of the radius at weekly intervals in 10 male lambs from 6 to 18 weeks of age. The lambs were randomised in 2 groups. In the first group, 2.0 mm diameter pins were inserted above and below the distal radial growth plate. Animals of the second group served as a control. Body weight, weight distribution, length of the radius, growth rate of each radial physis and distal growth plate area were assessed. No differences were observed between the two groups showing that pin insertion did not modify growth. Mean body weight ranged from 8.9 kg at 6 weeks of age to 37.7 kg at 18 weeks of age. The mean weight exerted on the forelimbs during this follow-up was 58.3 % of the total weight. Mean radial length ranged from 11.8 cm at 6 weeks of age to 16.1 cm at 18 weeks of age. Growth repartition during this period was 68.3 % for the distal physis and 31.7 % for the proximal physis. The mean distal radial growth plate area ranged from 8.2 cm2 at 6 weeks of age to 13.3 cm2 at 18 weeks of age. The body weight, radial length and distal growth plate area between 8 and 14 weeks of age could be assimilated as straight lines. The data obtained in this study will allow more accurate quantitation of skeletal growth in further experimental investigations.
Keywords : growth - radius - growth plate - sheep.
Correspondence : E.ASIMUS
Adress : Département des Sciences Cliniques, Ecole Nationale Vétérinaire, 23, chemin des Capelles, F- 31076 Toulouse Cedex

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