Clinical orthopaedics and related research
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Clin. Orthop. Relat. Res. · Apr 1990
Case ReportsAnterior dislocation of the hip associated with fracture of the ipsilateral greater trochanter. A case report.
A 22-year-old male motorcyclist fell from a height and sustained an obturator hip dislocation with concomitant fracture of the ipsilateral greater trochanter. The immediate reduction of the dislocation associated with open reduction of the fracture of the greater trochanter showed excellent results at the short-term and long-term follow-up examinations. This extremely rare hip injury seems not to have been previously reported in the literature.
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Clin. Orthop. Relat. Res. · Apr 1990
ReviewThe spastic mouse. And the search for an animal model of spasticity in human beings.
An animal model of chronic spasticity would be valuable. There has been little success at producing such a model, however, because there is no frequently occurring natural disease in animals and, after experimental injury, the animals tend to die or recover. Spasticity in animals or humans is one of the many manifestations of an upper motor neuron syndrome; there is no such thing as pure spasticity. ⋯ Genetically spastic mice are a homogeneous population that have an abnormally functioning neurotransmitter within the central nervous system. This model has been shown to develop abnormalities of muscle growth that ultimately lead to contracture. The spastic mouse shows some promise for investigation of the abnormalities of muscles and joints that occur in spastic humans.
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The CO2 laser was evaluated to determine its effectiveness for marginal cauterization of giant-cell tumors after resectional curettage. Average power densities of 11-53 W/cm2 for corresponding application times of 120 and 60 seconds were found to produce 30 degrees temperature rises in fresh human femoral heads. ⋯ CO2 laser resection was found to be accurate and reproducible. No damage to underlying hyaline cartilage and soft tissues was evident histologically at one and four weeks after experimental local laser cauterization of distal femoral condyles in rabbits.