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Biomedical subjects

D Resnick

Publications and source records attributed to D Resnick.

At least 19 recordsLinked to original sources
PubMed1979

Dorsal defect of the patella (DDP): a characteristic radiographic lesion.

The dorsal defect of the patella (DDP) is a benign lesion with specific radiographic features. Seven cases of DDP are reviewed; all 7 lesions were identical in location and radiographic appearance. The characteristic lesion is round and lytic, with well-defined margins; it is located in the superolateral aspect of the patella adjacent to the subchondral bone. Arthrography reveals intact cartilage. DDP may occur in both sexes and may be bilateral. It is often found incidentally on radiographs ordered for acute trauma. Its etiology is not known. Differential diagnosis is also discussed.

Adolescent↗
PubMed1979

An improved radiographic view of the glenohumeral joint.

In addition to the standard views of the shoulder (external rotation, internal rotation, and axillary), a 40-degree posterior oblique and a 60-degree anterior oblique projection were used to evaluate 105 consecutive shoulder examinations. Of the 32 abnormal shoulders evaluated, the diagnosis was established 97% of the time with a single 40-degree posterior oblique view, as opposed to a 78% rate with the three standard views. The 40-degree posterior oblique view of the shoulder is especially useful in evaluating the glenohumeral joint.

Humans↗
PubMed1979

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↗
PubMed1979

Radiology of seronegative spondyloarthropathies.

Radiographic manifestations of the seronegative spondyloarthropathies superficially resemble the findings of rheumatoid arthritis although they differ in both distribution and pattern of disease. Ankylosing spondylitis has a predilection for the axial skeleton; psoriatic arthritis may involve distal interphalangeal joints; and Reiter's syndrome is most commonly associated with asymmetrical lower extremity alterations. The absence of osteoporosis and the presence of bony proliferation are also noted in these disorders. Sacroiliitis and spondylitis, which can be observed in any of these disease, may have distinctive features. In ankylosing spondylitis, bilateral saroiliac joint alterations and typical syndesmophytes are common; in Reiter's syndrome and psoriasis, asymmetrical saroiliac joint changes and bulky spinal outgrowths may be observed. The physician should be aware of typical roentgen findings in each of the spondyloarthropathies.

Arthritis, Reactive↗
PubMed1978

Enostosis of the spine.

Five patients with single sclerotic vertebral body lesions had serial radiographs demonstrating no change in size of the radiodensities. Radionuclide bone imaging, obtained in 4 of these patients, showed no increased radioisotopic uptake in the areas in question. The absence of growth of the lesions on follow-up radiographs and the presence of negative bone scans support the diagnosis of enostoses of the spine. It is important for the radiologist to realize that benign sclerosis of a single vertebral body may simulate skeletal metastasis.

Adult↗
PubMed1978

Intravertebral disk herniations: cartilaginous (Schmorl's) nodes.

Cartilaginous (Schmorl's) nodes are related to prolapses of intervertebral disk material into the vertebral body. These nodes can be produced by any process which weakens either the cartilaginous plate covering the superior and inferior surfaces of the vertebral body or the subchondral trabeculae of the vertebra. Such processes include juvenile kyphosis, trauma, metabolic and neoplastic disorders, and degenerative disk disease. Radiographic abnormalities include indentations of vertebral outline and radiolucencies within the vertebral body with varying degrees of sclerosis. These can be readily differentiated from other vertebral alterations such as "butterfly", "fish", and "H" vertebrae.

Cartilage Diseases↗
PubMed1978

Decreased 99mTc sulfur colloid activity in healed rib fractures.

This report describes 2 patients in whom focal areas of decreased 99mTc sulfur colloid marrow activity were associated with callus formation and healing rib fractures in one case and rib fractures with bony bridging in the second. Since bone marrow scans are occasionally used to select appropriate sites for marrow biopsy in patients with suspected metastatic disease, radiographic correlation of "cold" lesions on marrow scans is recommended prior to biopsy to exclude fracture with callus formation as a benign cause of the abnormality.

Adult↗
PubMed1978

The adult hip: an anatomic study. Part I: the bony landmarks.

A comprehensive anatomic, pathologic and radiographic study of the adult hip was undertaken to define bony landmarks which, when altered, are reliable indicators of disease. Methodology included radiography of cadaveric specimens and analysis of over 300 anteroposterior (AP) radiographs of "normal" adult hips. This information was applied to clinical situations with the following conclusions: (a) The diagnosis of protrusio acetabuli is warranted if the acetabular line projects medial to the ilioischial line by 3 mm or more in men and by 6 mm or more in women. (b) In acetabular trauma, an AP and two oblique radiographs (30 degrees anterior oblique and 30--45 degrees posterior oblique) are required for complete evaluation. (c) Characteristic alterations in the joint space allow accurate diagnosis of disease.

Adult↗
PubMed1978

The adult hip: an anatomic study. Part II: the soft-tissue landmarks.

A comprehensive anatomic, pathologic, and radiographic study was undertaken to define reliable soft-tissue landmarks about the hip. Methodology included an analysis of 300 "normal" adult hip radiographs, tissue maceration, cadaveric intra-articular injection studies and review of selected clinical cases. Results, when applied to clinical situations, indicate: (a) The iliopsoas and "capsular" fat planes are poor indicators of small to moderate amounts of intra-articular fluid in the adult. (b) The "capsular" fat plane is not associated with the joint capsule, but in fact is a fat plane between two muscle bundles anterior to the articulation. (c) Distinct soft-tissue planes are available for dissemination of fluid from the hip joint. These include the iliopsoas bursa, which may distend in association with articular disease, and the fat plane of the obturator externus muscle.

Hip↗