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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of orthopaedic surgery & traumatology 4 (1994), S. 143-148 
    ISSN: 1432-1068
    Subject(s): Ligament croisé antérieur ; Résultats cliniques ; Contrôle de qualité ; Mesure instrumentale de la laxité ; Evaluation isocinétique de la fonction musculaire ; Anterior cruciate ligament ; Clinical scores ; Quality control ; Instrumented laxity testing ; Isokinetic muscle force
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary An objective functional evaluation after acute repair of unilateral anterior cruciate ligament (ACL) rupture was performed in a homogeneous group of 37 patients at a mean of 44.4 months after trauma. A patient questionnaire, standardized clinical testing, instrumented laxity testing and concentric isokinetic muscle torque evaluation were included. Instrumented laxity testing proved to be closely correlated with the pivot shift test (r=0.54, p〈0.001) and the Lachman test (r=0.73, p〈0.001), but offered a far better resolution. The degree of anterior instability as measured could be shown to correlate negatively with the isokinetic flexor muscle torque (r=−0.61, p〈0.001) and the hamstring/quadriceps ratio (r=−0.44, p〈0.05). The intraindividual differences of instrumented laxity testing revealed that a significant degree of instability (〉2 mm) was present in 49% of the patients contrasting with the good result in the Lysholm score (mean=84.5 pts.) and a 74% rate of satisfied patients. Instrumented laxity testing makes a significant contribution to objective evaluation of functional results after ACL repair.
    Notes: Résumé Une évaluation fonctionnelle objective a été effectuée après réparation unilatérale de rupture du ligament croisé antéro-externe (LCAE) dans une série homogène de 37 patients, avec un recul moyen de 44,4 mois par rapport au traumatisme. Un questionnaire, un contrôle clinique standardisé, des tests instrumentaux de laxité ligamentaire ainsi qu'une évaluation du moment de torsion musculaire isokinétique concentrique furent utilisés. Le contrôle instrumental de la laxité ligamentaire peut être considéré comme très proche du test d'instabilité du pivot (r = 0,54, p 〈 0,001) et le signe de Lachman (r = 0,73, p 〈 0,001) mais est plus rapidement décisif. Le degré d'instabilité antérieure mesuré pourrait être considéré comme corrélé négativement avec le moment de torsion musculaire isokinétique concentrique (r = 0,61, p 〈 0,001) et le rapport ischio-jambiers/quadriceps (r = 0,44, p 〈 0,005). Les différences entre les sujets des tests instrumentaux de laxité ligamentaire révèlèrent qu'un degré significatif d'instabilité (〉 2 mm) existait chez 49 % des patients, ce qui contraste avec les bons résultats au score de Lysholm (moyenne : 84,5 points) et une proportion de 74 % de patients satisfaits. Ainsi le test instrumental de laxité ligamentaire apporte-t-il une contribution importante à l'évaluation fonctionnelle post-opératoire des ligamentoplasties du LCAE.
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  • 2
    ISSN: 0375-9474
    Subject(s): Nuclear reactions
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
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  • 4
    ISSN: 0370-2693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
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  • 5
    ISSN: 1433-044X
    Subject(s): Key words Cervical spine • Segmental range of motion • Reliability study • Functional radiographs ; Schlüsselwörter HWS • Segmentales Bewegungsausmaß• Reliabilität • Röntgenfunktionsaufnahmen
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die röntgenologische Funktionsuntersuchung der Halswirbelsäule (HWS) in Flexions- und Extensionsstellung wird zunehmend als Screeningverfahren zur Diagnostik segmentaler Funktionsstörungen eingesetzt. Ziel der vorliegenden Studie war, die Auswertmethode nach Penning zur metrischen Erfassung segmentaler Winkelgrade in der Sagittalebene auf Trennschärfe, Reliabilität und Anwendbarkeit zu überprüfen. Von 20 Patienten mit schmerzhafter Bewegungseinschränkung der HWS und von 20 beschwerdefreien Probanden wurden passiv gehaltene Röntgenfunktionsaufnahmen der HWS in Flexion und Extension angefertigt. Anhand dieser Röntgenbilder wurden die Winkelgrade der sagittalen segmentalen Beweglichkeit von 5 Ärzten im Blindverfahren ermittelt. Die statistische Auswertung erfolgte durch Vergleich der Mittelwerte im t-Test und durch Berechnung des Korrelationskoeffizienten r. Die Ergebnisse der Studie konnten zeigen, daß die von Penning vorgeschlagene Auswertmethode für die Segmente C 3/C 4 bis C 6/C 7 eine signifikante Unterscheidung zwischen Patienten und Probanden erlaubt (p K 0,05 und p K 0,01). Für die Übereinstimmung zwischen den 5 Untersuchern ergaben sich gute bis sehr gute Korrelationswerte (0,6 〈 r K 0,8 bzw. r 〉 0,8). Die ermittelten Meßwerte sind jedoch nur im Zusammenhang mit einer entsprechenden klinischen Symptomatik als „normal“ oder „funktionsgestört“ im Sinne einer segmentalen Hypo- bzw. Hypermobilität zu werten.
    Notes: Summary Functional radiographic analysis of the cervical spine in flexion and extension position is increasingly used as screening method for the diagnosis of segmental functional disorders. The objective of this study was to prove Penning's evaluation method for the metrical recording of segmental angles in the sagittal plane for selectivity, reliability and usability. Passive functional radiographs of the cervical spine in flexion and extension were taken of 20 patients with painful limitation of mobility of the cervical spine and 20 subjects, similar in sex and age, without complaints. The radiographs were duplicated. Five physicians measured the angles of segmental mobility in a blind study. Statistical analysis was conducted using the t-test and calculating the correlation coefficient “r”. The results of the study prove that the evaluation method by Penning shows a usable and, for segments C 3/C 4 to C 6/C 7, significant selectivity. The selectivity of p K 0.05 and p K 0.01 is sufficient to distinguish patients from healthy subjects. The correlation between the five reviewers showed good to very good results (0.6 〈 r K 0.8; r 〉 0.8). The measured values, however, have to be considered, in connection with the appropriate clinical symptoms, as still “normal” or “functionally disordered” in the context of segmental hypo- resp. hypermobility.
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 71 (1993), S. 214-220 
    ISSN: 1432-1440
    Subject(s): Gait mechanism ; Torque in human gait ; Ground reaction forces ; Gait analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Transversal torque between the stance leg and the ground was measured in 169 test persons with normal gait (91 women, 78 men; ages 15–79 years) using three-dimensional force plates. Taking the average of six to ten single steps produces reproducible person- and group-specific data. This permits the isolation and study of individual solutions to specific problems of locomotion, so-called gait mechanisms. The relatively great torque during the double-stance phase is caused mainly by the medially directed, short-term impact peak at heel strike, with the stride length as lever arm. Double-stance torque is therefore determined by motion dynamics and does not help in understanding individual gait mechanisms. Torque measured during the single-stance phase is, in comparison, rather small and is interindividually relatively variable. Experimentally measured torque is considered in terms of various hypotheses concerning the creation of torque in the human gait. Men obviously tend, for reasons of equilibrium and stability, to compensate the various torques. Better than the more known vertical, sagittal, and frontal force components, the remaining torque represents the individual problem solution and therefore permits the study of specific gait mechanisms, both physiological and pathological. Using the characteristic gait of patients with hemiplegia as an example, it is shown that pathological torque observed systematically on the nonaffected side in such patients is a quantitative measure of the trunk rotation necessary to move the plegic side forward. Measurement of this torque therefore permits precise determination of the degree of damage, as well as quantitative control and objective documentation of the rehabilitation progress.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Archives of orthopaedic and trauma surgery 106 (1987), S. 358-363 
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The efficacy of “athermic” lasers (HeNe λ = 632.8 nm and IR diode λ = 904 nm) in the treatment of tendinopathies was investigated in a randomized double-blind study. On 10 consecutive days, 64 patients (32 therapy, 32 placebo) were treated for 15 minutes each with a switched-on or switched-off laser under otherwise identical conditions. The extent of movement in involved joints (neutral 0 method) and rating on a pain scale for resting pain, movement pain, and pressure pain before treatment, after treatment, and 2 weeks after conclusion of therapy, as well as infrared thermography, served to check therapy. After the end of therapy, a significant reduction (P = 〈0.001) of 50% was shown for resting pain as well as reductions of 30% for movement and 30% for pressure pain. This result was identical in the therapy group and in the placebo group. There was also no indication of a different result of therapy between the therapy and placebo groups with regard to the thermographic control and the extent of movement. The breakdown of the data in terms of age, sex, and duration of disease did not provide any indications of different results for placebo or therapy. It was striking that the patients who reported sensations during or after the treatment (irrespective of whether pleasant or unpleasant) had a greater reduction of pain than the patients without sensations. This laser therapy thus did not show any effect above and beyond that in the untreated group in our double-blind clinical study.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 244 (1987), S. 288-290 
    ISSN: 1434-4726
    Subject(s): Human tympanic membrane ; Microcirculation ; Rhythmical vasomotion ; Laser-Doppler flowmetry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The present investigation was performed to evaluate the use of laser-Doppler flowmetry as a means for measuring the blood flow of the microcirculation of the human tympanic membrane. The blood cell flux in the microvascular bed of the normal tympanic membrane was measured in healthy subjects. The laser-Doppler output signals continuously recorded showed a steady value ranging from 70 to about 120V, as well as spontaneous oscillations (or rhythmical active vasomotion). Our findings show that the laser-Doppler instrument tested seems to be useful for evaluating blood flow changes in the microcirculation of the human tympanic membrane.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The 2 1 + -excitation of deformed nuclei by tensor polarized deuterons provides an alignment of both nuclei and thus a means to study specifically the quadrupole-quadrupole interaction between both nuclei. The tensor analyzing powerA xz (θ) has been measured for the elastic and inelastic scattering on24Mg and28Si. The coupled channel analysis including a deformed tensor potential reveals a clear signature of the quadrupole-quadrupole part of the nuclear projectile-target interaction.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 319 (1984), S. 133-141 
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The elastic scattering of vector and tensor polarized deuterons near 20 MeV has been analyzed in terms of the phenomenological optical potential including a complex tensor term ofT R -type. In comparison with folding potentials we find a strong reduction of the real part of theT R -potential with increasing mass number, the contribution of coupling to vibrational excitations is discussed.
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