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Biomedical subjects

A Moberg

Publications and source records attributed to A Moberg.

At least 19 recordsLinked to original sources
PubMed2000

Acetabulum-head index measured on arthrograms in children with Legg-Calvé-Perthes disease.

The acetabulum-head index (AHI), which can be used to assess the lateral displacement of the femoral head, was measured on both plain radiographs and arthrograms in 37 children with unilateral Legg-Calvé-Perthes disease. For the identification of the outermost part of the acetabulum on the arthrograms, two measuring points were used: A. the lateral border of the bony acetabulum (arthrogram I) and B. the lateral border of the labrum (arthrogram II). The reproducibility of the measurements, evaluated by duplicate calculations of the AHI on arthrogram II, which was obtained from the unaffected hips, was high; the root mean square error of the AHI was 3.3. On the plain radiographs, an AHI of 80 or less could be used as a 'guideline' to reveal early subluxation of the femoral head. The corresponding figures on arthrograms I and 11 were 70 and 85, respectively.

Acetabulum↗
PubMed1999

Acetabulum-head index in children with normal hips: a radiographic study of 154 hips.

The acetabulum-head index (AHI), which is used to assess femoral head coverage on plain radiographs, was measured in 77 children (154 hips) with normal hips aged 2 to 14 years. The mean AHI value was 94 (range, 79-114). Both the intraobserver and the interobserver reproducibility of the measurements was high. The AHI values tended to decrease with increasing age. The mean AHI minus 2 standard deviations, which was used to define the border value for subluxation of the femoral head, was 80. The authors propose that an AHI < or = 80 can be used as a guideline to reveal abnormal lateral displacement of the femoral head in children.

Acetabulum↗
PubMed1998

[Legg-Calve-Perthes disease--a mysterious hip joint disease in children. Diagnosis, investigation and treatment].

The major challenge to the attending physician in cases of children with Legg-Calvé-Perthes disease (LCPD) is to prevent the development of degenerative arthritis of the hip joint. In the presence of unfavourable prognostic factors such as lateral subluxation or more than 50 per cent necrosis of the femoral head, the examination should be complemented by MRI (magnetic resonance imaging), and operative treatment be considered. Treatment is commonly based on the principle of containment of the femoral head to prevent its deformity. However, there is no consensus as to the treatment of LCPS, and as the aetiology remains unknown the optimal treatment is similarly unclear.

Age Factors↗
PubMed1998

A comparative study of fixation techniques in the open Bankart operation using either a cannulated screw or suture-anchors.

The purpose of this study was to compare fixation using either Mitek suture-anchors or a cannulated screw technique, both applied extracapsularly, for an open Bankart reconstruction. Fifty-five consecutive patients with recurrent anterior dislocation of the shoulder were operated in two consecutive series. The same surgical technique was applied regardless of group, except for the reattachment method of the capsulolabral complex to the glenoid rim. Patients operated with suture-anchor fixation had better anterior stability, external rotation and functional outcome after a 24-month minimum follow-up. There were no differences between the groups regarding redislocation or subluxation rate.

Adult↗
PubMed1997

Results after femoral and innominate osteotomy in Legg-Calvé-Perthes disease.

In a retrospective study of the surgical management of Legg-Calvé-Perthes disease, 16 femoral osteotomies (Group A) and 18 innominate osteotomies (Group B) were compared Smith regard to clinical and radiographic results. All hips were classified preoperatively as Catterall Group 3 or Group 4. The average followup period was 6 years in Group A and 8 years in Group B. The clinical results were the same in the 2 groups and all patients were asymptomatic in the affected hip(s) during daily activity. The radiographic results were also the same in the 2 groups with regard to measurements of the sphericity of the femoral head (Mose's index and epiphyseal quotient) but the coverage of the femoral head by the acetabulum (center edge angle) was better in the innominate osteotomy group.

Acetabulum↗
PubMed1996

Conventional radiography and bone scintigraphy in the prognostic evaluation of Legg-Calvé-Perthes disease.

PURPOSE: The role of conventional radiography and bone scintigraphy in predicting the outcome of Legg-Calvé-Perthes disease was investigated. MATERIAL AND METHODS: The 75 children reviewed (86 hips) were followed up to the primary healing of the disease. The findings at conventional radiography (obtained at presentation, at the time of maximum capital head involvement, and at the end of the healing process of the disease) were compared to early bone scintigraphy features. RESULTS AND CONCLUSIONS: Bone scintigraphy provided more accurate information concerning the extent of the necrotic process than initial radiographs. Moreover it could determine revascularization and consequently the stage of the disease. The methods was, however, unable to predict the outcome of the disease in some cases, particularly if it was performed late after the onset of symptoms. Conventional radiography provided important information about other parameters such as "head-at-risk" signs which facilitated treatment selection. Of these signs not only lateral subluxation but also metaphyseal changes strongly predispose to severe deformity of the hip joint.

Child↗
PubMed1995

Legg-Calvé-Perthes disease. Comparison of conventional radiography, MR imaging, bone scintigraphy and arthrography.

In a prospective study of 22 patients (24 hips) with Legg-Calvé-Perthes disease (LCPD) the findings at conventional radiography, arthrography, bone scintigraphy and MR imaging, obtained at the time of diagnosis, were compared. MR was superior to conventional radiography and bone scintigraphy in the detection of the extent of involvement in the femoral head. Arthrography was as good as or better than MR imaging in determining the shape of the articular surfaces and the occurrence of lateral subluxation. Conventional radiography was less sensitive in identifying the degree of lateral subluxation and the extent of the necrosis in the femoral head. MR imaging provided anatomical and pathophysiological information about the extent and location of head involvement as well as the degree of lateral subluxation. Revascularisation was more clearly demonstrated with MR than with bone scintigraphy, irrespective of symptom duration.

Arthrography↗
PubMed1992

Incidence of Perthes' disease in Uppsala, Sweden.

The annual incidence of Perthes' disease in Uppsala County, Sweden, was computed for the years 1978-1989 and further analyzed as regards age and sex distribution. The annual incidence was 8.5 per 100,000 in children 0-14 years of age.

Adolescent↗
PubMed1990

Mandibular-facial reconstruction with segmentally split serratus anterior composite flaps.

Oncologic or traumatic head and neck defects with missing mandible, facial skin, and oral mucosa are especially well suited to reconstruction with a composite tissue unit, based on the subscapular-thoracodorsal vessels, that carries any combination of skin, bone, and muscle to restore vascularized skeletal structures, oral lining, and skin cover. The subscapular-thoracodorsal vascular pedicles supply segmentally split units of the lower serratus muscle and ribs on which it originates. Also, one or two skin paddles for cover and lining flaps are carried either by the cutaneous scapular and parascapular branches of the circumflex scapular vessels or by surgically split segments of the latissimus dorsi musculocutaneous flap. The composite flap can be designed in a variety of combinations to meet recipient defect needs and allow retained innervated segments of the component muscles in situ for preservation of donor motor function. The common subscapular-thoracodorsal vascular pedicle can be transferred either as a microvascular free flap or by pedicle transposition through a subpectoral-subplatysmal tunnel to the mandibular-facial defect. This versatile reconstructive unit illustrates many of the refinements of contemporary flap reconstructions.

Face↗
PubMed1987

The effect of wheat bran on the absorption and accumulation of cadmium in rats.

1. The major purpose of the present study was to determine whether the addition of wheat bran to endosperm crisp bread in a composite diet given to rats for 6 weeks causes an increase in the accumulation of cadmium in the rats due to the Cd content in the bran, or whether binding factors in the bran, such as dietary fibre and phytic acid, reduce or prevent the accumulation of this Cd. A second purpose was to determine whether the accumulation of Cd can be estimated by measuring the absorption of 109Cd given in a single meal of the diet. 2. Three groups of eight rats were fed on one of three diets. Half of each diet consisted of a basal mixture of starch, protein, oil, minerals and vitamins. The remainder consisted of crisp breads based on refined wheat flour (endosperm group), wheat flour + bran in equal amounts (bran group) and wheat flour + Cd to give a Cd content similar to that of the bran group (endosperm + Cd group). After 41 d on the diets, the rats were deprived of food but not water for 12 h and then given a 5 g test meal of their respective diets with 109Cd added. After 3 h the remaining 109Cd-labelled diets were replaced with the unlabelled diets for 3 h before the rats were killed. 3. The total Cd contents in the wall of the proximal small intestine, including mucus, and in the liver and kidneys were highest in the endosperm + Cd group and lowest in the endosperm group.(ABSTRACT TRUNCATED AT 250 WORDS)

Animals↗