Biomedical subjects

A J Bjersand

Publications and source records attributed to A J Bjersand.

11 recordsLinked to original sources

PubMed1988

Open tibial fractures treated with Hoffmann external fixation.

Thirty-two open fractures of the tibial shaft were treated with external fixation between 1973 and 1981. Early amputation was necessary in one patient. In the remainder, including 14 with extensive soft-tissue lesions, wound healing was obtained within 18 weeks, and the median time until full weight bearing without pain was 32 weeks (range 8-60 weeks). Two deep infections healed during the observation period. Among 26 patients examined 1-9 years after the injury, the result was excellent in six, good in 11, fair in four, and poor in five patients (including the amputation). One fracture had not united during the observation period. Four poor results were due to the stiffness of the ankle and foot after compartment syndrome. In conclusion, alertness for early fasciotomy is necessary even in severe open tibial fractures. The external fixation should not be continued longer than the soft tissue and bone reconstruction make it necessary.

Adolescent↗

PubMed1988

An explosive decompression accident.

Four divers in a compression chamber system were suddenly decompressed from 9 atm to 1 atm. One of the divers was about to close the door between the chamber system and the trunk when the accident happened. He was shot out through the door and severely mutilated. The three others died on the spot. The autopsy results are described. The most conspicuous finding was large amounts of fat in the large arteries and veins and in the cardiac chambers, as well as intravascular fat in the organs, especially the liver. This fat can hardly have been embolic, but must have "dropped out" of the blood in situ. It is suggested that the boiling of the blood denatured the lipoprotein complexes, rendering the lipids insoluble.

Accidents, Occupational↗

PubMed1984

Mechanical factors in loosening of Christiansen and Charnley arthroplasties.

A series of 96 Christiansen and 23 Charnley hip arthroplasties, mainly for osteoarthrosis, were followed for an average of 40 (15-93) months. Radiolucent zones at the cement bone interface and resorption of the calcar were more frequent in the Christiansen than in the Charnley hips. Medial and axial migration, and cement fracture often occurred concurrently, with a total frequency of 27/96 in the Christiansen and 4/23 in the Charnley subseries. Wide radiolucent zones in the acetabular cement bone interface were more frequent in the Christiansen hips. Six acetabular protrusions were observed in the Christiansen hips against none in the Charnley hips. The average Harris' hip scores were significantly higher for the Charnley than for the Christiansen hips. Reoperation for loosening was performed in two Charnley hips and 19 Christiansen hips.

Adult↗

PubMed1983

Patellofemoral disorders treated by operations.

Thirty-six patients with patellofemoral disorders treated with various operative procedures were evaluated after an average follow-up period of 29 (6 to 72) months. Instability of the patella, either recurrent dislocation or subluxation, was present preoperatively in 27 knees (Group A). Twelve patients (Group B) were operated on for chondromalacia, which was not combined with a history of instability. Good results were obtained in 15 cases in Group A and in only three cases in Group B. Simple procedures, lateral release alone and medial duplication alone appeared to be ineffective methods.

Femur↗

PubMed1982

Bone involvement pattern in hypervascular lesions.

The pattern of the focal bone lesion which consists partly or wholly of rounded holes with comparatively smooth edges is discussed. Twenty-two bone lesions were studied by angiography. The "hypervascular pattern" occurred in five cases of widely different histology, all with strong intraosseous hypervascularity. Different pathogenic mechanisms in the creation of this pattern are discussed. It is probably the result of both destructive and reparative processes in the bone.

Adolescent↗

PubMed1982