PubMed Health⌕ Search

Biomedical subjects

C S Resnik

Publications and source records attributed to C S Resnik.

At least 19 recordsLinked to original sources
PubMed1992

Septic arthritis: a rare cause of drooping shoulder.

Drooping shoulder, or inferior subluxation of the glenohumeral joint, must be differentiated from true dislocation of the humeral head. In some instances, widening of the glenohumeral joint can be attributed to a large volume of intra-articular fluid. Three patients with septic arthritis leading to drooping shoulder are described, representing the largest series with this development reported to date.

Acromion↗
PubMed1992

An aid to image interpretation and differential diagnosis.

RATIONALE AND OBJECTIVES: Proven case conference is a weekly 1-hour session designed to aid diagnostic radiology residents in their ability to interpret images and formulate differential diagnoses. This article provides a detailed description of the format of this conference and its use in evaluating resident performance. METHODS: The scores of all residents on the written portion of this conference over a 2-year period were compiled. Results were divided according to each residency class, and each resident was compared with the mean of his or her class and with previous performance. RESULTS: There was overall improvement of the group over the course of residency. All individual scores showed improvement during the 2-year period studied. CONCLUSION: Proven case conference is a simply performed, well-accepted aid to image interpretation and differential diagnosis. It affords residents an ongoing opportunity for practical learning and provides the residency program director with an objective tool for resident evaluation.

Diagnosis, Differential↗
PubMed1992

Double injuries of the forearm: a common occurrence.

To evaluate the frequency of different types of forearm fractures and, in particular, determine the frequency of double injury to the forearm, the authors prospectively examined 119 consecutive forearm fractures and found double injuries to the forearm in all but five cases. In 79 of the 119 patients (66%), ligamentous injury was seen in addition to the obvious fracture. Nine patients with apparent isolated fractures on initial radiographs underwent examination by means of radionuclide bone scanning, which revealed a second injury in eight of them. Four patients with apparent single fractures did not undergo bone scanning because of their critical conditions. In four patients, a single fracture was initially diagnosed, but after reduction and casting, dislocation of the radioulnar joint was seen. These findings indicate that injury to the forearm almost invariably occurs at two or more sites and involves either both bones or bone and ligament. Because the distal radioulnar joint was affected in 71 patients (60%), scrutiny of the wrist is imperative whenever injuries to the bones of the forearm are discovered.

Arthrography↗
PubMed1992

Diagnosis of pelvic fractures in patients with acute pelvic trauma: efficacy of plain radiographs.

Although CT is widely recognized as an important adjunct to plain films in the evaluation of patients with acute pelvic trauma, accurate diagnosis of orthopedic injuries with plain films alone is often important to determine if immediate external fixation is necessary. The purpose of this study was to determine the efficacy of plain radiographs in the detection of pelvic fractures and dislocations in patients with acute pelvic trauma by using CT as the gold standard. CT scans and plain films collected prospectively in 50 patients with acute pelvic injuries were evaluated independently, and fractures and dislocations were identified and tabulated. Of a total of 162 fractures and dislocations seen on CT, only 14 (9%) were misdiagnosed on plain films. None of these misdiagnoses altered patients' management. Sixteen (80%) of 20 cases of intraarticular fragments in the hip joint associated with acetabular fractures were not identified on plain films. We conclude that plain film examination of the patient with pelvic trauma is sufficient to identify virtually all clinically important fractures and dislocations. Plain radiographs alone are not accurate in detecting fracture fragments within the hip joint.

Acetabulum↗
PubMed1991

Case report 660: Adamantinoma of tibia.

An adamantinoma of the tibia is presented, for which the CT and MRI characteristics are described. Both imaging modalities were excellent in providing information as to the extent and invasiveness of the tumor, although MRI had the advantage of providing immediate high quality sagittal visualization. Comparison is made briefly between adamantinoma and both fibrous dysplasia and osteofibrous dysplasia.

Bone Neoplasms↗
PubMed1991

Osseous drill holes to promote granulation tissue: radiologic appearance.

Skin grafting following extensive soft-tissue loss is often delayed until adequate granulation tissue can be generated. Surgical drill holes into the marrow cavity promote development of granulation tissue. This article illustrates the radiology appearance of these drill holes in four patients.

Adult↗
PubMed1991

Vertebral osteomyelitis caused by Nocardia asteroides: report and review of the literature.

A 65-year-old man with 9 months of radicular lower back pain was admitted for treatment of presumed malignancy of the lumbar spine. Lumbar radiographs showed destruction of the L4-L5 endplates and obliteration of the disc space, which was more compatible with an infectious process. After 2 different closed biopsy specimens failed to reveal an etiologic organism, N. asteroides was cultured from an open biopsy sample of the affected vertebrae. This and 8 other cases in the English literature of vertebral osteomyelitis caused by N. asteroides are reviewed.

Aged↗
PubMed1990

Case report 618. Metastatic angioblastic meningioma.

A patient with a history of angioblastic meningioma 7 years previously developed lytic metastatic disease to the femur at two separate sites. The controversy in terminology of angioblastic meningioma and hemangiopericytoma and the similarity in radiological and pathological appearance of primary and metastatic hemangiopericytoma of bone illustrate the need for an accurate clinical history to arrive at a correct diagnosis.

Adult↗
PubMed1990

Case report 594: Osseous sarcoidosis (osteolytic) of lumbar spine and pelvis.

A case of destructive osseous sarcoidosis involving the lower lumbar spine, sacrum, and pelvis has been presented. The pattern of multiple small lytic lesions without sclerosis in this distribution has not been described previously. Identification of these lesions was only possible by computed tomography and differentiation from metastatic disease required open biopsy.

Adult↗
PubMed1990

Radiologic assessment of bones after Ilizarov procedures.

Ilizarov procedures, introduced recently in the United States, were performed in 163 patients aged 2-53 years who underwent pure limb lengthening for inherited conditions such as achondroplasia (37 procedures), correction of angular deformity secondary to nonunion or malunion of fractures (62 procedures), or correction of congenital/developmental angular deformities of the limbs (64 procedures). Before surgery, every patient was evaluated with plain radiography; after surgery, every patient was evaluated at weekly or biweekly intervals with standard plain anteroposterior and lateral radiography, with acquisition of additional radiographs centered over the distraction site. Every patient had complete bone healing, which took 3-14 months. In all patients, new bone formation was evident within 15 weeks after surgery. Complications associated with the Ilizarov technique were minimal (delayed formation in two cases and cyst formation within the distraction site in two cases), but success relies heavily on radiographic evaluation. Radiographs of the whole bone or joint must be obtained for overall assessment of bone alignment; specific views of the distraction site, with the x-ray beam centered over this site, may be required.

Adolescent↗
PubMed1990

Sonographic evaluation of bone production at the distraction site in Ilizarov limb-lengthening procedures.

The success of the Ilizarov distraction technique has resulted in a marked increase in the number of limb-lengthening and limb-straightening procedures performed for the correction of short and deformed limbs. This technique involves fracture of the bone and application of an external ring and bar support frame with circumferential screw threads and nuts, which allows systematic distraction of bone segments at a rate of 0.25 mm four times a day. During the procedure, the patient is encouraged to be ambulatory, as the strength of the frame allows weight bearing. Because of the limitations of plain radiographs in detecting the small amounts of new bone formation that occur at the distraction site in the early stages of healing, the success of the procedure cannot be determined for many weeks. The rate of distraction depends on the successful production of new bone in the distraction site. Early evaluation of new bone production is therefore important, because slow bone formation requires a decrease in distraction rate and vice versa. We examined 12 patients who had limb-lengthening procedures via the Ilizarov technique to determine if sonography could be used to detect early new bone formation at the distraction site. Our results show that new bone formation could be detected with sonography many weeks before its appearance on the radiograph. The sonographic appearance of new bone consists of echogenic foci within the distraction site, which become aligned in the longitudinal plane and which increase in number and size until they coalesce as echodense bone, which does not allow through-transmission of the ultrasound beam. In addition, sonograms showed 1.5-cm and 2-cm cysts within the distraction site in two patients in whom they were not visible on the radiographs. Timely percutaneous aspiration allowed continued normal bone generation. We conclude that sonography is useful for the detection of new bone formation at the distraction site in patients undergoing the Ilizarov procedure.

Amputation, Surgical↗
PubMed1990

Fracture of the pelvis: current concepts of classification.

Historically, pelvic fractures have been classified according to whether there is pelvic stability or instability, although confusion has been caused by the inclusion of many eponyms that mainly reflect the observation of a single author on a particular fracture pattern. Pennal and Tile were the first authors to attempt to classify pelvic fractures according to the force vector causing them. This concept was refined by Young and Burgess, who provided a more detailed classification system, again relating to force vectors. This article focuses on this classification and its significance with regard to pelvic stability, type of pelvic disruption, and hence the type of corrective forces that should be applied in the surgical management. Use of a classification system of pelvic fractures based on force vectors allows the orthopedic surgeon to apply external fixation in the most appropriate manner to correct pelvic deformity and to maximize patients' survival.

Fractures, Bone↗
PubMed1990

Achilles tendon ossification and fracture.

We describe the case of a patient who had a fracture through an ossified Achilles tendon, and we illustrate a second case. Such ossification is uncommon, occurring most often after trauma or surgery. A subsequent fracture has been reported previously in only eight patients.

Achilles Tendon↗