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Biomedical subjects

D A Bednar

Publications and source records attributed to D A Bednar.

26 records · Page 2Linked to original sources
PubMed1991

Screw fixation of odontoid fractures and nonunions.

Surgical treatment of odontoid fractures has usually been carried out by C1-2 arthrodesis rather than by fracture fixation. An alternative treatment of compression screw fixation was used to treat selected acute odontoid fractures and nonunions. Ten patients were operated on. A variety of lag-screw types were used to compress and secure the fracture. Screw placement was considered excellent in five cases; in four, the screw tip protruded through the posterosuperior cortex of the dens by 1-3 mm. One patient died as a result of multiple injuries 2 days after surgery. In all other cases, including four cases of odontoid pseudarthroses, the fractures achieved solid union. It was concluded that screw fixation can be used for the successful treatment of selected odontoid fractures and nonunions.

Adult↗
PubMed1991

Post-traumatic compartment syndrome of the foot.

Post-traumatic compartment syndrome in the foot is an unusual but well-recognized entity. If there is an awareness of the condition at the time of presentation it can be diagnosed and treated effectively. A case of compartment syndrome in the foot of a 17-year-old boy after massive lower-extremity trauma is described. The simple and readily available diagnostic techniques are emphasized and an alternative approach to plantar decompression, which avoids exposure of and potential damage to the posterior tibial neurovascular bundle, is presented.

Adolescent↗
PubMed1991

Surgical palliation of spinal oncologic disease: a review and analysis of current approaches.

The clinical problem of primary and secondary vertebral tumours is encountered with increasing frequency throughout North America as oncologic management protocols evolve and the population continues to age. These lesions can present problems of pain, instability and paralysis. Optimal surgical palliation is often of benefit when more conservative methods have been unsuccessful. Vertebral tumours can be approached either anteriorly or posteriorly. These alternatives have led to the evolution in the clinical community of two "camps" championing their respective approaches. The authors have reviewed the accumulated literature up to December 1988 and have found that anterior approaches offer improved clinical outcome without substantially increased morbidity.

Humans↗
PubMed1989

The spinal pedicle screw: techniques and systems.

New spine instrumentation systems are being developed that incorporate pedicle screws for purchase. This review article outlines techniques for the safe insertion of these devices. A description of the various screw-rod and screw-plate systems currently available is presented.

Biomechanical Phenomena↗
PubMed1985

Mycotic abdominal aortic aneurysm: a case report.

A case of mycotic aneurysm of the abdominal aorta, arising as a complication of subacute bacterial endocarditis in a 75-year-old white woman, is presented. The dramatically expansile nature of this aneurysm is well documented. The history, clinical presentation, etiology, microbiology and surgical management of this rapidly progressive and often fatal condition are discussed through a review of the literature.

Aged↗