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Biomedical subjects

A M Jacobs

Publications and source records attributed to A M Jacobs.

At least 55 records · Page 3Linked to original sources
PubMed1987

Magnetic resonance imaging of the foot and ankle.

Magnetic resonance imaging enhances the inherent differences in the density of tissues to allow the diagnosis of pedal disorders not readily observed by other diagnostic means. The technique is particularly useful for the evaluation of the nature and extent of soft tissue pathology. In addition, certain osseous and joint disorders, such as osteomyelitis and Sudeck's atrophy, may be detected in their incipient stages.

Ankle↗
PubMed1985

Fracture nonunion.

The management of nonunion represents a complex clinical situation requiring an understanding of the pathophysiology. Before initiating treatment, the nonunion must be assessed radiographically. Further evaluation by radionuclide imaging and CT may be applicable. Only then can proper treatment, whether by immobilization, internal fixation with or without incorporation of bone grafts, or electrostimulation, be instituted.

Adult↗
PubMed1985

Podiatric metallurgy and the effects of implanted metals on living tissues.

The selection of metals and their alloys for implants and fixation devices represents a composite of desirable properties. The search for appropriate implantable materials began following the acceptance of internal fixation. Advances in the control of septic complications, together with recent metallurgical developments, have resulted in the safe application of metallic implants.

Alloys↗
PubMed1984

Compton scatter axial tomography with x-rays: SCAT-CAT.

A method of extracting information from the backscattered field produced in parallel beam x-ray computed tomography (CT) is presented. A calculational model to predict the backscattered field based on Compton scattering is described, and the model is verified by measurements of simple phantoms. The phantoms tested--cylinders of polymethylmethacrylate (PMM) with air gaps and aluminium rods placed internally--are irradiated on a scanning assembly, built to simulate a first generation CT scanner with a transmission and a scatter detector (the SCAT-CAT). Data from the transmission detector are reconstructed by traditional CT methods to provide a transmission image; it is the data from the backscatter detector which are analysed in this study. After verification of the model for the scattered field calculations, a method of extracting information from the scattered field is developed, based on ratios of scatter signals from non-uniform to uniform phantoms. This method is demonstrated for predicted data of a simulated phantom and for measured data of the same and two additional phantoms. The method is very sensitive to air gaps in the phantoms because of the relative electron density of air with respect to PMM; it is not as sensitive to aluminium rods for the same reason. Various methods of applying the scattered field information to produce an image representing a simulated phantom are considered, and a preferred method is chosen to reconstruct scattered field data into an image for the three phantoms studied.

Humans↗
PubMed1983

A comparative study of postoperative care with phenol nail procedures.

This study was made to evaluate a new method of postoperative care in phenol nail procedures. The authors believe Debrisan to be as effective as any procedure in current use. They state that there is a scarcity of literature to substantiate many of the existing treatment regimens.

Administration, Topical↗
PubMed1983

Tarsal tunnel syndrome: a manifestation of systemic disease.

In many respects, tarsal tunnel syndrome is analogous to carpal tunnel syndrome. Despite this fact, tarsal tunnel syndrome has lagged far behind its counterpart in recognition and understanding. Thought of as a local compression phenomenon, reports of systemic associations are now being seen with increased frequency. This article reviews both local and systemic considerations for tarsal tunnel syndrome. Analysis of our own group of patients revealed 49 with electrodiagnostically confirmed tarsal tunnel syndrome, 24 of whom had bilateral involvement. The incidence of systemic disease was found to be 34.7%.

Adolescent↗
PubMed1982

Elevated temperature in the postoperative patient.

In this paper, the authors discuss postoperative fever--the patterns, pathophysiology, thermoregulation, intraoperative and postoperative changes, and etiology of postoperative fevers. They stress the need for a thorough history and physical examination and the importance of determining the cause.

Adrenal Insufficiency↗
PubMed1982

Diabetic autonomic neuropathy in the surgical management of the diabetic foot.

The onset of autonomic neuropathy can often be insidious and may be associated with somatic neuropathy. Whether the autonomic dysfunction has a primary role or simply serves as a marker for other disease processes remains unclear. There is no doubt, however, that autonomic neuropathy, once present, greatly complicates the diabetic state and the management of the diabetic patient in the perioperative period and also statistically increases the mortality risk. Hopefully the testing of diabetic patients for the presence of autonomic neuropathy will become more prevalent. The heightened awareness will serve to alert the podiatric physician of possible autonomic disease sequelae in the surgical management of such patients.

Autonomic Nervous System Diseases↗
PubMed1981

Tarsal coalitions: an instructional review.

Tarsal coalitions, the majority of which are congenital, are abnormal unions between two or more tarsal bones. Acquired tarsal coalitions may result from trauma or from rheumatic conditions. Tarsal coalition may cause peroneal spastic flatfoot or rigid valgus foot without peroneal spasm. Surgery is not always essential in the treatment of tarsal coalitions; some patients will respond to conservative treatment.

Adult↗
PubMed1981

Functional and surgical anatomy of the lateral ankle.

Inversion ankle injuries resulting in soft tissue injury or various types of fractures are seen frequently by podiatrists, and diagnosis and evaluation of treatment require a thorough knowledge and understanding of the anatomy of the area. In this paper, the authors approach the anatomy from the point of view of surgical dissection, with emphasis on the soft tissue structures. X

Ankle↗