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  • Title: Diagnosis of occult fractures about the hip. Magnetic resonance imaging compared with bone-scanning.
    Author: Rizzo PF, Gould ES, Lyden JP, Asnis SE.
    Journal: J Bone Joint Surg Am; 1993 Mar; 75(3):395-401. PubMed ID: 8444918.
    Abstract:
    Sixty-two consecutively seen patients in whom a fracture about the hip was clinically suspected, but in whom the radiographic findings were negative, were examined with both magnetic resonance imaging and bone-scanning. The magnetic resonance-imaging studies, consisting of T1-weighted coronal sections, were done within twenty-four hours after admission to the hospital, and the bone scans, within seventy-two hours after admission. There were twenty-three men and thirty-nine women. Thirty-six patients who had evidence of a fracture on the magnetic resonance-imaging study also had a positive bone scan initially. Twenty-three patients who had a negative finding on the magnetic resonance-imaging study had a corresponding negative bone scan. Two additional patients had evidence of avascular necrosis of the femoral head on both the magnetic resonance image and the bone scan, and they were managed non-operatively. One patient had a positive magnetic resonance image and a negative bone scan twenty-four hours after admission. A repeat bone scan, which was made six days later, was positive for a fracture of the femoral neck and the patient was managed with internal fixation. Magnetic resonance imaging was as accurate as bone-scanning in the assessment of occult fractures of the hip. The magnetic resonance imaging took less than fifteen minutes to perform, and it was tolerated well by the patient. Magnetic resonance imaging provides an early diagnosis of occult fractures about the hip and may decrease the length of the stay in the hospital by expediting definitive treatment.
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