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Muscle strength in children treated for displaced femoral fractures by external fixation

Authors: Hedin, Hanne; Larsson, Sune

Source: Acta Orthopaedica Scandinavica, Volume 74, Number 3, June 2003 , pp. 305-311(7)

Publisher: Informa Healthcare

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In a prospective study (1993-2000), we measured the isokinetic strength of the quadriceps and hamstring muscles in 31 children aged 5-17 years, on average, 3 (1.5-5) years after treatment for a displaced femoral fracture by external fixation and early mobilization. A group of age-, sex- and weight-matched children without previous injury were used as controls. The hopindex test was used to assess the patient's confidence in the injured limb and was similar in the fractured and unfractured legs as well as in the patients and controls. We measured the peak torque output at 2 angular velocities (60°/s and 180°/s) in the hamstring and quadriceps muscles, using Cybex testing equipment. Torque to body weight ratios were used to compare muscle strength in patients and controls. We found no differences in muscle strength between patients and controls or in the distribution of which leg was stronger, equal or weaker in the patients or controls at any test speed. External fixation and early mobilization seem to prevent residual muscle weakness, which occurs with traction or a cast for femoral fractures in children.

Document Type: Research Article


Publication date: June 1, 2003

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