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      Analysis of muscle function in the lower limb after fracture of the diaphysis of the tibia in adults.

      The Journal of bone and joint surgery. British volume
      Adolescent, Adult, Ankle Injuries, physiopathology, surgery, Female, Fibula, injuries, Follow-Up Studies, Fracture Fixation, Intramedullary, Fracture Healing, physiology, Humans, Isometric Contraction, Male, Middle Aged, Postoperative Complications, diagnosis, Range of Motion, Articular, Tibial Fractures

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          Abstract

          We examined the recovery of power in the muscles of the lower limb after fracture of the tibial diaphysis, using a Biodex dynamometer. Recovery in all muscle groups was rapid for 15 to 20 weeks following fracture after which it slowed. Two weeks after fracture the knee flexors and extensors have about 40% of normal power, which rises to 75% to 85% after one year. The dorsiflexors and plantar flexors of the ankle and the invertors and evertors of the subtalar joint are much weaker two weeks after injury, but at one year their mean power is more than that of the knee flexors and extensors. Our findings showed that age, the mode of injury, fracture morphology, the presence of an open wound and the Tscherne grade of closed fractures correlated with muscle power. It is age, however, which mainly determines muscle recovery after fracture of the tibial diaphysis.

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