R G Stiles

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The technique of hip arthroplasty is at least 30 years old and currently is performed 120,000 times per year in the United States [1]. Changes in materials and surgical techniques have markedly decreased the prevalence of infection and aseptic loosening. At the same time, other complications such as stress shielding and aggressive granulomatosis have become(More)
Thirty-one symptomatic patients were studied with MR imaging to evaluate the sensitivity and specificity of shoulder MR in the diagnosis of rotator cuff tears. Correlative studies included arthroscopy in 19 patients and arthrography in 12 patients. Images were obtained on either a 0.5- or 1.5-T Philips superconducting magnet using spin-echo pulse sequences(More)
OBJECTIVE The purpose of this study was to evaluate the spectrum of plain radiographic findings in patients with septic hip prostheses. MATERIALS AND METHODS Radiographs of 20 confirmed infected hip prostheses were examined for the presence or absence of lucency, type of lucency (focal or nonfocal), rapidity of radiographic change, periostitis,(More)
OBJECTIVE To evaluate the accuracy of direct magnetic resonance imaging (MRI) signs of tears of the anterior cruciate ligament. PATIENTS AND METHODS Over the period April 1991 to February 1994, 92 consecutive MRI studies of the knee were obtained for which arthroscopic data were also available. The MRI studies were retrospectively evaluated for course,(More)
The authors present a case of atypical heel pain masquerading as plantar fasciitis. The patient was subsequently diagnosed with hyperparathyroidism-induced stress fracture of the calcaneus. The clinical entity of hyperparathyroidism and its manifestations in the skeletal system are presented, as well as a review of stress fractures and pertinent imaging(More)
Fibrous lesions of bone include entities with a wide range of radiographic appearance and clinical behavior. Many benign fibrous lesions, such as medial supracondylar defects, fibrous cortical defects, and nonossifying fibromas have typical radiographic appearances and usually are self-limited. Desmoplastic fibromas and benign fibrous histiocytomas are less(More)
A case of diffuse idiopathic skeletal hyperostosis presenting as acute thoracic myelopathy is reported. Diffuse idiopathic skeletal hyperostosis has long been regarded as a radiological entity with an innocuous clinical course. The manifestations of this disease are reviewed. There is mounting evidence that it is neither a clinically infrequent nor, as this(More)
PURPOSE The accuracy of fluoroscopy-guided hip aspiration in the diagnosis of infection in hip prostheses was evaluated. MATERIALS AND METHODS Results from 147 preoperative aspiration cultures were compared with results of operative cultures. The relative costs of aspiration and nuclear medicine studies were also compared. RESULTS With the operative(More)