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  • Gait mechanism  (1)
  • Key words Cervical spine • Segmental range of motion • Reliability study • Functional radiographs  (1)
  • 1
    ISSN: 1433-044X
    Keywords: 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.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 71 (1993), S. 214-220 
    ISSN: 1432-1440
    Keywords: 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.
    Type of Medium: Electronic Resource
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