Which one of the following is the investigation of choice for evaluation of suspected Pehe&;s disease?: (A) Plain X-ray, (B) Ultrasonography (US), (C) Computed Tomography (CT), (D) Magnetic Resonance Imaging (MRI)
Answer is D. MRI is helpful to assess the area of infarction & femoral head contour . *radiographic assessment is necessary to determine the progress of the disease ,sphericity of femoral head , epiphyseal extrusion or collapse & response to treatment . *salter extrusion angle helps to assess femoral head extrusion . *ahrography is useful in the early resorptive stage of the disease *radionuclide bone scan - used to detect potential form of pehes disease. REF:textbook of ohopedics, John ebnezer, 4th edition ,pg.no.414