Publications by authors named "Fjeld T"

Objective: To evaluate the feasibility and prophylactic effect of psilocybin as well as its effects on hypothalamic functional connectivity (FC) in patients with chronic cluster headache (CCH).

Background: CCH is an excruciating and difficult-to-treat disorder with incompletely understood pathophysiology, although hypothalamic dysfunction has been implicated. Psilocybin may have beneficial prophylactic effects, but clinical evidence is limited.

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Introduction: Penile denudation is a devastating condition often reconstructed with a split-thickness skin graft(STSG). As this kind of reconstruction is challenging, we present an non-invasive treatment using Manuka honey dressings with a satisfying result. This was performed as a salvage procedure after failed STSG.

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The K+ balance and muscle activity seem to interact in a complex way with regard to regulating the muscle density of Na(+)-K+ pumps. The effect of immobilization was examined in ten sheep that had low muscle K+ content. Three additional sheep served as untreated controls.

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We report on a female infant with lethal congenital malformations including extreme hydrocephalus due to aqueductal stenosis, vertebral segmentation anomalies, fused costae, anal atresia, renal dysplasia, and bicornuate uterus with a double blind vagina. The VACTERL and the MURCS associations are possible diagnoses. Her father had a neurenteric cyst in infancy.

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A post hoc comparison of the mechanical factors that affected the outcome of experimental metaphyseal- and diaphyseal-lengthening osteotomies in sheep tibiae was performed. The resulting motions between bone segments at the metaphyseal and diaphyseal levels were estimated using measured fixator stiffnesses, postural muscle activity, ground reaction forces, and calculated internal and external loads. Relative displacements of bone segments of up to 2.

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Growth retardation occurring as a result of limb lengthening by epiphyseal distraction in two animal species was quantified by using femur or tibia as the experimental bone. The growth plate subjected to distraction appeared radiolucent after the lengthening procedure but was less distinct and had reduced height as compared with the control. In seven of 22 animals, the growth plate of the lengthened bone appeared to close earlier than in the control.

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In 20 sheep, aged seven to eight months, a tibial lengthening osteotomy was performed to compare the process of repair of the metaphyseal and diaphyseal regions of the bone. Analogous to clinical lengthening, two frame configurations of a bilateral external fixation device were used to obtain adequate fixation of the bone segments in the metaphyseal and diaphyseal lengthening osteotomies. A daily distraction rate of 1 mm for 4.

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Epiphyseal distraction of the left distal femur was accomplished in 18 chondrodystrophic dogs (age 19-22 weeks). A distraction rate of 0.5 mm/day was applied by means of a unilateral device.

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Limb lengthening of the left femur was performed in 12 sheep, 7-8 months of age. After weakening of the cortex by drill holes, a controlled fracture was created in the diaphysis. The bone segments were fixed in reduced position using a unilateral external fixation device.

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Low-rate epiphyseal distraction of the left proximal tibia using a modified bilateral Hoffmann external fixation device, was accomplished in 14 goats (age 6-7 months). Daily distraction at a rate of 0.5 mm was continued for 5.

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Epiphyseal distraction of the left distal femur was accomplished in 10 goats (aged 3-4.5 months). A modified Hoffmann external fixation device was used as a unilateral distraction frame.

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Surgical correction of angular deformities caused by premature closure of the distal ulnar growth plate in dogs. Correction of angular deformities in 14 cases of premature closure of the distal ulnar growth plate is described. Angular deformities were most frequently seen in large breeds during the most active phase of growth at 3-5 months of age.

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Correction of angular deformities in 14 cases of malunion fractures in the canine radius and ulna is described. Angular deformities were most frequently seen in small breeds of dogs following transverse diaphyseal fractures. The most common disorders were valgus and recurvation.

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The effects of continuous elongation of skeletal muscles were studied on six sheep who underwent a lengthening osteotomy of the right tibia. Open muscle biopsies were taken from the biceps femoris muscle preoperatively (Group A), after 5 weeks of bone distraction (Group B) and after another 5 weeks without further distraction (Group C). The size and distribution of type 1 (slow-twitch) and type 2 (fast-twitch) muscle fibres were determined from sections stained for myofibrillar ATPase activity.

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