Contractility of femoral in children and adolescents with diseases of the locomotor system

85 children and adolescents at the age of 6-16 years with 3-12-cm growth retardation of one of their limbs have been studied before and after surgical lengthening according to Ilizarov and 18 normal youths at the age of 17-18 years have been studied as well. The plots of the age dynamics of the force maximal moment of the leg extensors and flexors, corresponded to body mass, are presented. The dynamometric indices of the leg extensors and flexors of the intact limb increase with age up to 1,5-2,7Н* m/kg, while those of the limb involved – up to 0,7-1,3 Н* m/kg. Relative moment of muscular force after surgical limb lengthening is restored for 5 years up to 1,2 Н* m/kg in the female group studied and up to 1,5 H* m/kg in the male one.