Popliteal pseudoaneurysm as a complication of an adjacent osteochondroma: angiographic diagnosis.
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Adolescent↗
Biomedical subjects
G Greenway
Publications and source records attributed to G Greenway.
Carpal involvement in inflammatory (erosive) osteoarthritis.
Inflammatory or erosive osteoarthritis, in addition to the classical digital distribution, may involve the carpus. Characteristic carpal changes are restricted to the radial aspect of the wrist and consist of narrowing, eburnation, osteophytosis, and mild subluxation of the first carpometacarpal and trapezio-scaphoid joints. Radiographic findings and differential diagnosis are discussed.
Arthritis, Rheumatoid↗
Selective involvement of the first carpometacarpal joint in scleroderma.
Selective involvement of the first carpometacarpal joint is described in four women with scleroderma. Radiographic abnormalities at this site included osseous erosion, radial subluxation of the metacarpal base, and (in two patients) intraarticular calcification. Perlarticular osseous erosions were noted at adjacent locations in three patients. The cause of this distinctive wrist finding in scleroderma is unknown, but its similarity to alterations in other connective tissue diseases suggests that muscular and tendon imbalance may be important in producing bone erosion and subluxation at this articulation.
Aged↗
Early radiologic signs of rheumatic disease.
The radiographic manifestations of rheumatic disease are varied. Proper interpretation of the observed roentgen abnormalities requires knowledge of the underlying pathogenesis and characteristic distribution of the disease. With this knowledge the physician may provide accurate and early diagnosis in many patients with arthritis.
Arthritis↗
Myelofibrosis associated with prominent periosteal bone apposition. Report of two cases.
Myelofibrosis is a myeloproliferative disorder that is characterized by splenomegaly and bone marrow replacement by fibrous tissue. The predominant radiographic feature is osteosclerosis; however, in rare instances, periosteal bone apposition or periostitis is apparent in the metaphysis of the distal femura and proximal tibiae. It has been suggested that periostitis, when associated with fever and bone pain, is indicative of more aggressive disease. We report this unusual radiographic finding and its similar appearance to hypertrophic osteoarthropathy in two patients with myelofibrosis. In our patients, the presence of periosteal bone apposition did not correlate with increased disease aggressiveness.
Aged↗
Juxtaacetabular ganglionic (or synovial) cysts: CT and MR features.
Radiographic findings include supraacetabular bone erosions, subchondral acetabular cysts, soft tissue masses with or without radiolucent inclusions representing nitrogen gas, joint space narrowing, and abnormal hip configuration. Associated tears of the acetabular labrum were confirmed by arthrography in two patients. Computed tomography and magnetic resonance imaging afforded improved delineation of soft tissue ganglia and their relationship to the acetabular bone, labrum, and hip joint. We report our experience with seven patients in whom various imaging examinations clearly documented the presence of soft tissue cystic lesions adjacent to the acetabulum; in six of the seven patients, significant clinical manifestations were evident in the affected hip. Such cysts, whether designated synovial or ganglionic in type, appear to be a frequently overlooked yet important cause of hip symptomatology.
Acetabulum↗
MR appearance of idiopathic synovial osteochondromatosis.
OBJECTIVE: A retrospective review of the MR examinations in 21 patients with idiopathic synovial osteochondromatosis (ISO) was performed to determine its MRI characteristics. MATERIALS AND METHODS: Twenty-one patients diagnosed with ISO had undergone MRI prior to surgery. The MR images were retrospectively evaluated for configuration and extent of lesion as well as for signal characteristics. RESULTS: Three distinct MR patterns were seen in ISO: A--lobulated homogeneous intraarticular signal isointense to slightly hyperintense to muscle on T1-weighted images and hyperintense on T2-weighted images (n = 3); B--pattern A plus foci of signal void on all pulse sequences (n = 17); and C--features of pattern A and B plus foci of peripheral low signal surrounding central fat-like signal (n = 2). The foci of signal void in pattern B and C corresponded to areas of calcification and the foci of peripheral low signal surrounding central fat-like signal in pattern C corresponded to areas of ossification. CONCLUSION: The MR appearance of ISO appears sufficiently unique to allow its differentiation from other causes of intraarticular pathology.
Adolescent↗
The Hill-Sachs lesion. An experimental study.
The Hill-Sachs lesion is an important indication of previous anterior shoulder dislocation. We created Hill-Sachs lesions by using cadaveric humeri. Roentgenographs of these cadaveric humeri in the standard projections were then taken. Under fluoroscopy, new projections of the cadaveric humeri were obtained. In a clinical study, 15 patients (14 men and 1 woman; age range, 23 to 63 years; mean, 30 years) with known recurrent anterior shoulder dislocations were evaluated by using standard and new roentgenographic projections. On the basis of the cadaveric and clinical studies, the optimal methods for detecting Hill-Sachs lesions include the following three roentgenograms: anteroposterior view of the glenohumeral joint with the humerus in 45 degrees internal rotation, the notch (Stryker) view, and the modified Didiee view.
Adult↗
Evaluation of unstable shoulders by computed tomography. A preliminary study.
Three patients who had various types of glenohumeral joint instability, and in whom computed tomography (CT) was utilized as an additional diagnostic modality, are presented. In two of the three patients, routine radiography supplemented with special views documented the presence of a Hill-Sachs lesion; in the third, an equivocal abnormality was apparent. In all three individuals, CT verified the presence of a Hill-Sachs lesion; in one patient, there was also a Bankart deformity. CT represents a new and important modality that may be applied to the diagnostic evaluation of patients with unstable shoulders.
Adult↗