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Biomedical subjects

J C Hodge

Publications and source records attributed to J C Hodge.

31 records · Page 2Linked to original sources
PubMed1995

Analysis of carpal instability: I. Description of the scheme.

There is a lack of a generally agreed analysis of carpal instability that can assist in the diagnosis, give guidelines for treatment, and ensure unity when reporting results of treatment. Based on the literature and using six categories describing chronicity, constancy, etiology, location, direction, and pattern of the instability, we present a proposal for a standardized analysis. Using this analysis, an instability should be presented with information in all six categories. The analysis may be expanded and developed according to future needs.

Acute Disease↗
PubMed1995

Analysis of carpal instability: II. Clinical applications.

An analytic scheme for carpal instability patterns has been described to help standardize reporting of these conditions. Six categories to be recognized in each case are chronicity, constancy, etiology, location, direction, and pattern. Examples are presented to illustrate the use of this scheme.

Acute Disease↗
PubMed1995

Digitized radiographs in skeletal trauma: a performance comparison between a digital workstation and the original film images.

PURPOSE: To evaluate the diagnostic performance of a teleradiology system in skeletal trauma. MATERIALS AND METHODS: Radiographs from 180 skeletal trauma patients were digitized (matrix, 2,000 x 2,500) and transmitted to a remote digital viewing console (1,200-line monitor). Four radiologists interpreted both the original film images and digital images. Each reader was asked to identify, locate, and characterize fractures and dislocations. Receiver operating characteristic curves were generated, and the results of the original and digitized film readings were compared. RESULTS: All readers performed better with the original film when interpreting fractures. Although the patterns varied between readers, all had statistically significant differences (P < .01) for the two image types. There was no statistically significant difference in performance with the two images when dislocations were diagnosed. CONCLUSION: The system tested is not a satisfactory alternative to the original radiograph for routine reading of fracture films.

Computer Communication Networks↗
PubMed1994

Recurrent disk versus scar in the postoperative patient: the role of computed tomography (CT)/diskography and CT/myelography.

The purpose of this study was to compare computed tomography (CT)/myelography and CT/diskography images, in a given patient, as a method of distinguishing postoperative fibrosis from recurrent herniated disk material. The study population consisted of 20 patients who had undergone lumbar diskectomy and subsequently developed recurrent radicular pain. All patients underwent CT/myelography and CT/diskography, each procedure performed within 72 h of the other. Comparison of transaxial images from CT/myelography and CT/diskography at a given disk space level yielded the following results: in 12 patients the extradural mass seen via CT/myelography corresponded entirely to the contrast-filled disk fragment seen via CT/diskography (recurrent herniated disk); in three patients the extradural mass seen via CT/myelography was larger than the disk fragment seen via CT/diskography (recurrent herniated disk and fibrosis); and in five patients CT/diskography images appeared normal, but CT/myelography showed an extradural mass (fibrosis). Fifteen patients underwent surgical reexploration with the following results: in three of three patients, the suspicion of recurrent herniated disk and fibrosis by radiologic evaluation was confirmed by surgical reexploration; in nine of 12 patients, solely recurrent herniated disk shown by radiologic criteria was similarly confirmed. The remaining five patients presumed to have fibrosis by radiologic criteria were treated nonoperatively.

Adult↗
PubMed1993

Calcific tendinitis in the proximal thigh.

Calcific tendinitis of the proximal thigh is a benign entity that may cause significant pain. It must be distinguished from chronic or malignant disorders, such as arthritis, infection, and soft tissue/cortical neoplasms. Although it may be self-limited, some patients will benefit from medical intervention. In such cases, we recommend computed tomography-guided percutaneous steroid injection. Herein we describe the clinical and radiographic features of calcific tendinitis of the proximal thigh in 5 patients.

Adult↗
PubMed1993

Synovial plicae and chondromalacia patellae: correlation of results of CT arthrography with results of arthroscopy.

The purpose of this study was to compare computed tomographic (CT) arthrography with arthroscopy in the evaluation of patients with anterior knee pain. The authors studied 23 patients with patellar plicae at CT arthrography. Twenty of 21 patients presumed to have medial plicae at arthroscopy had similar findings at CT arthrography (sensitivity, 95%; specificity, 100%). However, 10 of 12 suprapatellar plicae and 11 of 11 lateral plicae seen at CT arthrography were not seen at arthroscopy. All 11 patients with a diagnosis of no or mild chondromalacia patellae at arthroscopy had similar CT arthrographic findings, whereas seven of 11 patients presumed to have moderate or severe chondromalacia patellae at arthroscopy had matching CT arthrographic results (sensitivity, 100%; specificity, 73%). CT arthrography was much more accurate in classifying plicae as thick (66%) as opposed to classifying plicae as thin (17%). The authors conclude that CT arthrography is an accurate and specific modality for distinguishing patients with anterior knee pain due to plicae from those with anterior knee pain due to differing causes.

Adult↗
PubMed1992

Imaging of the patellofemoral joint.

Abnormalities of the patellofemoral joint are one of the main problems in internal derangement of the knee. The role of different imaging modalities (plain radiographs, CT, CT/arthrograms, radionuclide scans, and MR imaging) is discussed in this article.

Femur↗
PubMedDate not supplied

Avulsion fracture of tendon of extensor carpi radialis longus: unknown mechanism.

Fractures of the base of the second metacarpal are infrequent events compared with those of the first or fifth metacarpal. Furthermore, these fractures are often difficult to visualize on standard radiographs. There is controversy regarding the management of such fractures. Two case reports and a discussion of this entity are presented.

Accidental Falls↗
PubMedDate not supplied

Pisiform and hamulus fractures: easily missed wrist fractures diagnosed on a reverse oblique radiograph.

We present a review of the current literature involving fractures of the pisiform and hook of the hamate. This is highlighted by two cases in which the fracture lines are seen only on the reverse oblique wrist radiograph, a view obtained with the wrist in a supinated rather than a pronated position. These fractures are not seen on standard two or three view wrist examination. Both of these fractures were initially missed in the emergency department. Serious sequelae can result from both of these injuries and can be avoided if diagnosed acutely. The reverse oblique radiograph can be quick, cost-effective, and diagnostic in this setting. If properly treated by immobilization or excision, the results can be excellent.

Adult↗
PubMedDate not supplied

Anterior process fracture or calcaneus secundarius: a case report.

Avulsion of the anterior process of the calcaneus accounts for nearly 15% of calcaneal fractures according to some sources. Yet, this fracture rarely has been reported in the radiology literature. Lateral plain radiography of the foot may demonstrate an ossific structure, distinct from the distal end of the calcaneus, overlying the head of the talus. However, the fracture may be particularly subtle and go undetected on plain radiography. Furthermore, it may be mistaken for the calcaneus secundarius (CS), an accessory ossicle of the anterior facet of the calcaneus identified in up to 5% of the population during cadaveric studies. This article describes the physical and radiological findings in a patient with an anterior process fracture and how this fracture can be distinguished from the CS.

Calcaneus↗
PubMedDate not supplied

Bilateral radial head and neck fractures.

Isolated radial head and neck fractures comprise 1-2% of all fractures seen by physicians. Although bilateral distal radial fractures have been documented, primarily in gymnasts, no literature is present on bilateral radial head or neck fractures. This article presents two such patients who sustained nondisplaced bilateral radial head or neck fractures resulting from falls on outstretched hands. The detection, classification, and treatment options of radial head fractures is reviewed.

Accidental Falls↗
PubMedDate not supplied

Depiction of pelvic fractures using 3D volumetric holography: comparison of plain X-ray and CT.

OBJECTIVE: The goal of this study was to demonstrate the feasibility and test the diagnostic performance of a new technology, 3D volumetric holography, for imaging pelvic fractures. The management of pelvic fractures may be complex, and advanced imaging studies such as CT are frequently indicated. Multiplanar CT reformations and 3D renderings provide clinically useful and complementary display of the directly acquired CT data. With the recent availability of volumetric multiple exposure holograms, produced from serial image data, it is now possible to produce true 3D images of the pelvis. In the hologram, one may view the CT data in 3D or as individual planar slices constituting the whole 3D pelvis. The diagnostic performance of the volumetric multiple exposure holograms was tested against routine radiography, CT, and 3D volumetric CT reconstructions. MATERIALS AND METHODS: Routine radiography and CT were performed in 15 patients with suspected pelvic fractures. Volumetric multiple exposure holograms and 3D volumetric CT reconstructions were created from the CT data. Axial and multiplanar reformation CT images were used as the standard for fracture, diastasis, and intraarticular fragment detection. RESULTS: Radiograms detected 39 of 50 of the fractures and diastases and no intraarticular fragments. The 3D CT reconstructions and the holograms viewed as 3D objects alone missed two small fractures of the anterior column and one hip with intraarticular bone fragments. When the volumetric multiple exposure holograms were viewed as a 3D object and as individual planar slices constituting the whole, their results were the same as the standard. CONCLUSION: Volumetric multiple exposure holograms were as sensitive and specific as axial CT and multiplanar reformations in detecting fracture pathology. By containing and making available, from one image, both planar and 3D information, volumetric multiple exposure holograms detected subtle anatomical features that were hidden by overlapping structures in the radiographs and the 3D CT images.

Fractures, Bone↗