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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 24 (2000), S. 160-162 
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé   Le poignet et le coude de 23 malades ont été examinés à une période de suivi moyenne de 5 années (2–10 années) après une excision de la tête radiale pour une fracture isolée: 13 poignets étaient douloureux; 19 coudes étaient symptomatiques, mais dans la moitié des cas, la douleur était légère. On a constaté une migration proximale du radius dans 15 cas, la distance moyenne de migration étant de 14 mm. Une arthrose, généralement légère, fut notée à 17 coudes et 14 poignets. On observa également souvent une limitation de la mobilité du coude. L’excision de la tête radiale en raison d’une fracture entraîne un nombre élevé de plaintes postopératoires. Les indications de cette intervention devraient être relativement limitées.
    Notes: Abstract  The wrists and elbows of 23 patients were examined at a mean follow-up of 5 years (2–10 years) after excision of the radial head for an isolated fracture. Fourteen elbows and 13 wrists were symptomatic. Proximal migration of the radius was seen in 15 cases; the mean distance of migration being 1.4 mm. Osteoarthritis, mostly mild, was seen in 17 elbows and 14 wrists and limited movement of the elbow was a common finding. Excision of the radial head for fracture had a high complication rate.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé  Nous avons étudié l’effet d’un implant composite, fait de corail imprégné de protéine de la morphogenèse osseuse (BMP) bovine, sur la consolidation d’une perte de substance de 2 cm de l’os ulnaire canin. Des implants comprennent du corail simple ou des autogreffes d’os cortical étaient employées comme contrôles. Une fixation temporaire intramedullaire de 9 semaines était réalisée, soit avec des broches de Kirschner (6 os ulnaires avec un implant composite, 6 avec du corail simple, et 6 avec une autogreffe), soit avec une plaque-à-vis (3 avec un implant composite et 3 avec du corail simple). Des radiographies étaient prises 3, 6, 9, 12, 16, 26 et 36 semaines aprés la mise en place des implants, et des tests mécaniques de torsion étaient réalisées en fin d’étude. Aprés 16 semaines, les taux de formation et d’union osseuses étaient significativement plus élevés avec les implants composites qu’avec les implants de corail simple, mais des taux encore plus élevés étaient observés dans les essais avec les autogreffes. La BMP a accéleré la résorption de l’implant de corail. La résistance mécanique des os avec un implant composite était plus forte que celle des os ayant un implant de corail simple (P〈0.05), alors que la résistance mécanique des os traités par une autogreffe était plus forte (P〈0.01) que celle des os ayant un implant de corail, avec ou sans BMP. En conclusion, la BMP améliore le pouvoir de consolidation des implants de corail qui reste cependant inférieur à celui observé avec les autogreffes.
    Notes: Abstract  We studied the effect of a composite implant consisting of coral and native bovine bone morphogene-tic protein (BMP) on the healing of 2 cm segmental defects in the canine ulna. Plain coral and cortical autograft bone implants were used as controls. The fixation was temporary for 9 weeks with an intramedullary Kirschner wire (6 ulnas with a composite implant of coral and BMP, 6 with plain coral and 6 with an autograft) or a plate and screws (3 ulnas with a composite implant and 3 with plain coral). X-rays were taken at 3, 6, 9, 12, 16, 26 and 36 weeks, and mechanical torsion tests were performed at the end of the study. The score for bone formation and bone union evaluated from radiographs was significantly higher in the composite implant group than in the plain coral group at 16 weeks, but the score was even higher with autografts. BMP accelerated the resorption of the coral implant. The mechanical strength of the composite implants was higher than that of the bones with a plain coral implant (P〈0.05), while the mechanical strength of the coral implants, even with BMP, was significantly lower than the strength of autografts (P〈0.01). In conclusion, BMP enhanced the capacity of a coral implant to heal a segmental ulnar defect by increasing bone formation, but the effect of this combination was not as good as that of a cortico-cancellous autograft.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 19 (1995), S. 298-303 
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Entre 1985 et 1989 furent réalisées 102 reprises d'arthroplasties de hanche sur 92 patients en utilisant un tige fémorale isoélastique. Dans 45% des cas la métaphyse fémorale était détériorée. 11 des patients sont décédés pendant le suivi moyen de 5,7 années. Le composant fémoral a été-révisé pour prise de jeu dans 13 cas, pour infection dans 5 cas et pour dislocation dans 3 cas. Un examen radiologique de 70 hanches révéla une migration de 5 millimètres ou plus dans 27 hanches et un début de migration fut détecté dans 20 hanches. Neuf tiges subirent une migration de plus 8 mm et furent jugées comme descellées de facon certaine. Toutes les fractures (11 préopératoires et 15 preopératoires) guérirent sans problème. Dans la plupart des cas une légère hypertrophie corticale ń excédant pas 2 mm était observable radiographiquement. 3 patients furent exclus de l'évaluation clinique par suite d'une maladie générale sévère. Parmi les 66 hanches restantes la fonction fut excellente dans 18% des cas, bonne dans 50%, passable dans 26% et mauvaise dans 6% des cas selon l'échelle des résultats de D'Aubigne-Postel. Le problème de la tige isoélastique est la déficience de la fixation primaire, comme l'indique le grand nombre de problèmes précoces. Les resultats montrant une proportion d'échec globale de 33% sont non-satisfaisants et la tige isoélatique utilisée dans cette étude ne peut pas être recommandé pour une révision primaire de hanche.
    Notes: Summary We carried out 102 hip revision arthroplasties using an uncemented isoelastic femoral stem on 92 patients between 1985 and 1989. The proximal femoral bone stock had deteriorated in 45%. Eleven patients died during the mean follow up of 5.7 years. The femoral component has been revised again for loosening in 13, for infection in 5 and for dislocation in 3. Radiographs of 70 hips showed incipient migration at 3 months in 20, and at the time of review 27 hips had migrated 5 mm or more. Nine stems had migrated more than 8 mm and were judged to be loose. There were 11 fractures before operation and 15 during operation; they all healed. Slight cortical hypertrophy of not more than 2 mm was present in most cases. Three patients (4 hips) were excluded because of severe systemic illness. Of the remaining 66 hips, the clinical outcome was excellent in 18%, good in 50%, fair in 26% and poor in 6%. The isoelastic stem is associated with poor primary fixation which is indicated by early subsidence. The results, with a total failure rate of 33%, are unsatisfactory and the isoelastic femoral stem used in this series cannot be recommended for revision operations.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé. Nous avons étudié l’action d’un composite comprenant un cylindre de corail, une protéine morphogénétique xénogénique extraite de l’os de souris et du collagène de type IV, sur la consolidation la résistance mécanique et la réponse immune d’une perte de substance diaphysaire. L’étude au scanner à 6 semaines a montré une réduction significative du cal dans le groupe composite. A 16 semaines, la résistance à la torsion, la déformation angulaire maximale et la solidité des cals consolidés ont été respectivement de 113%, 117% et 120% dans le groupe controle, et de 67%, 92% et 79% dans le groupe composite, comparées au tibiai contralatéral. Dans le groupe composite, il y a eu une élévation significative des anticorps anti-mBMP. L’augmentation de la formation osseuse au stade précoce et la diminuation des propriétés mécaniques au stade tardif dans le groupe composite, pourraient être l’expression d’une induction séquentielle de l’ostéogenèse et d’une initiation immune des antigènes mBMP xénogéniques après une greffe hétérotopique.
    Notes: Summary. A composite implant consisting of a coral cylinder, moose bone morphogenetic protein and type IV collagen was used to repair a segmental tibial defect in sheep. Healing, related variance in mechanical strength and immune responses were evaluated. In comparison with a coral control, a larger amount of newly formed external callus was observed in the composite group at 6 weeks. The maximal torque capacity, maximal angular deformation at failure and bone stiffness of a healed osteotomised tibia recovered 113%, 117% and 120% in the coral controls and 67%, 92% and 79% in the composite implants against the corresponding contralateral tibia at 16 weeks respectively. A significantly elevated anti-BMP antibody was detectable in the composite group at 3 and 6 weeks. Augmented bone formation at an early stage and weakened torsional performance at a later stage in the composite implants may indicate the phase-specific osteoinduction and the immune response of xenogenic BMP with time.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 66 (2000), S. 288-291 
    ISSN: 1432-0827
    Keywords: Key words: Fracture healing — Callus — Quantitative tomography — X-ray densitometry — Image analysis.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Abstract. Fracture healing and callus formation have traditionally been evaluated by using X-ray radiography. Here we compared X-ray radiography and peripheral quantitative computed tomography (pQCT) in evaluating the healing callus of standardized tibial fractures in 141 female rats after a 4- or 8-week follow-up. The results were compared with the tensile (4-week) and compressive (8-week) failure load of the callus. The projectional size of callus, as defined from lateral ex vivo radiographs, correlated significantly with the pQCT-defined cross-sectional area (CSA) of mid-callus. This relationship was dependent on the pQCT attenuation threshold, being higher for the CSA of compact bone (r = 0.85, P 〈 0.0001) than for the total bone CSA (r = 0.68, P 〈 0.0001). Radiographically defined callus projectional area also correlated strongly with bone mineral content (BMC) (r = 0.84–0.86, P 〈 0.0001). The mean optical density of the callus analyzed from the radiographs had only a weak correlation with the pQCT-defined bone mineral density (BMD) of callus. A weak negative relationship was found between CSA and BMD. The optical density analyzed from lateral radiographs did not correlate with the tensile or compressive failure load of callus. Callus size, BMC, and BMD were associated with the compressive failure load, whereas both radiographs and pQCT were poor in explaining the failure load in tension.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European spine journal 4 (1995), S. 210-212 
    ISSN: 1432-0932
    Keywords: Low back pain ; Surface EMG ; Diagnosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The relevance of surface EMG of the paraspinal muscles measured by a portable, pocket-size device with a special amplifier was evaluated in different low back pain groups. Patients with only local low back pain had significantly higher EMG activities than those with unilateral radiating pain without verified disc herniation, those with verified disc herniation, and controls, but there were no differences between the latter three groups. Pain clearly modified paravertebral muscle activity, as the patients experiencing pain during the recording showed significantly higher EMG activities than those with no pain. It is concluded that surface EMG is a valid tool for indirectly assessing pain in low back pain patients but not for classification into different diagnostic groups.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Archives of orthopaedic and trauma surgery 108 (1989), S. 243-245 
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Decompression of the posterior interosseous nerve (PIN) was performed in 111 cases of tennis elbow. After a median follow-up time of 5 years, 85% showed improvement and 30% were almost completely relieved of their symptoms, the latter figure being considered to represent the real frequency of PIN entrapment. It thus seems that the PIN is one etiological factor in tennis elbow, but it cannot be distinguished from other causative factors by currently available methods. The confounding factor of PIN decompression being effective in cases of tennis elbow of other origins is discussed.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1433-8580
    Keywords: Diet ; Ethanol ; Pancreas ; Proteolytic enzymes ; Protease inhibitors ; Liver ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effects of dietary composition in combination with chronic ethanol ingestion on pancreatic proteolytic-antiproteolytic systems were studied by submitting 192 male Wistar rats to a 12-week dietary period. The rats were fed with a standard (S), fat-rich (F), protein-rich (P), or carbohydrate-rich (C) diet after randomized division into four groups. Half of the animals in each dietary group received water and the other half a mixture of 15% (v/v) ethanol and water as their drinking solution. The C-diet caused a significant increase of BAPNA hydrolysis, which was even more pronounced in rats receiving ethanol. Casein hydrolysis was increased significantly by the C-diet, but ethanol did not have any significant effect on this. Hydrolysis of ATEE was decreased significantly by the P- and C-diets, and ethanol in combination with the S- and F-diets decreased hydrolysis of ATEE in comparison with the corresponding water-receiving groups. The trypsin-inhibiting capacity of the pancreatic tissue was significantly increased in the group receiving C- and F-diets as compared to the S-diet-receiving group of animals. It seems that the composition of the consumed diet in combination with chronic ethanol ingestion may play a role in regulating the pancreatic proteolytic-antiproteolytic system. However, these changes were not parallel. The trypsin-inhibiting capacity of pancreatic tissue was also affected by the quality of the diet.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1433-8580
    Keywords: Chymotrypsinogen ; Trypsinogen ; Pancreatic ; Proenzymes ; Diets ; Ethanol
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The effect of chronic alcohol ingestion on pancreatic adaptation to protein-, fat-, carbohydrate-rich and standard diets in rats was studied. Alcoholic animals received 15% (v/v) ethanol in their drinking water and controls tap water for 12 weeks. No mortality or dehydration was observed. After this diet period pancreases were removed, and specific and total activities of trypsinogen and chymotrypsinogen activities of the homogenates were determined. Ethanol itself did not have any significant effect on chymotrypsinogen or trypsinogen activities, but when combined with special diets significant increases were observed. The activity of chymotrypsinogen increased most in the alcohol and fat-rich diet group, that of trypsinogen in the alcohol and carbohydrate-rich diet group.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Research in experimental medicine 187 (1987), S. 33-41 
    ISSN: 1433-8580
    Keywords: Diet ; Ethanol ; Acute pancreatitis ; Histology ; Nutritional factors ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The correlation between histological findings and mortality was studied in rat experimental acute pancreatitis (AP) modified by different diets and chronic ethanol consumption. Male Wistar rats (n = 192) were divided into eight groups and they were fed either a mixture of water and 15% (v/v) ethanol or tap water combined with standard or special diets for 12 weeks. The animals were followed up for 24 h after induction of AP, and the lowest mortalities were observed in the groups receiving water and standard (S) or carbohydrate-rich (C) diets and the highest in the groups receiving water and protein-(P) or fat-rich (F) diets. In the groups receiving S- or F-diets and ethanol the mortality was significantly increased. The animals were relaparotomized after 24 h of follow-up time. Histological specimens were taken from the surviving rats and evaluated on an arbitrary scale. Histologically, AP was the most severe in the group receiving the C-diet and ethanol, but in this group mortality did not differ significantly from the S-diet and water receiving group. The lack of correlation between the mortality and histological findings suggests nutritional factors to be important for the survival of the animals in experimental AP. It also stresses the assessment of the severity of experimental AP to be based on the all available parameters — not only on the basis of histological findings.
    Type of Medium: Electronic Resource
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