Background/Purpose
Several methods are used to evaluate the outcome of total hip arthroplasty (THA), however, their relationship at different time points after surgery is unclear. The purpose of this exploratory study was to investigate correlations between self-report function, performance-based tests (PBTs) and biomechanical parameters in patients 12 months after THA.
Methods
Eleven patients were included in this preliminary cross-sectional study. Hip disability and Osteoarthritis Outcome Score (HOOS) was completed for self-reported function. As PBTs, the Timed-up-and-Go test (TUG) and 30-Second-Chair-Stand test (30CST) were used. Biomechanical parameters were derived from analyses of hip strength, gait and balance. Potential correlations were calculated using Spearman correlation coefficient r.
Results
HOOS scores and parameters of PBTs showed moderate to strong correlations (0.3 < r < 0.7). Correlation analysis between HOOS scores and biomechanical parameters revealed moderate to strong correlations for hip strength whereas correlations with gait parameters and balance were rather weak (r < 0.3). Moderate to strong correlations were also found between parameters of hip strength and 30CST.
Conclusion
For THA outcome assessment 12 months after surgery, our first results indicate that self-report measures or PBTs could be used. Analysis of hip strength also appears to be reflected in HOOS and PBT parameters and may be considered as an adjunct. Given the weak correlations with gait and balance parameters, we suggest that gait analysis and balance testing should be performed in addition to PROMs and PBTs as they may provide supplementary information, especially for THA patients that are at risk for falls.
409 auBerhalb des Sonnensystems, dadurch dem Verstandnis zweifellos naher gebracht werden. Der Gedanke einer Universalitat des Novaphanornens ist hier nicht zum ersten Male geaunert worden. Arrbenius [36] ; [2] p. 195-199, zog es zur Kosmogonie des Planetensystems heran ; 21. ZezpeZ [37] zur Entwicklung der Sterne ;auch Szedentopf [22] sieht in ihm einen kosmischen Entwicklungsfaktor, der durch schnellere Massenverminderung der Sterne die groBe Zeitskala von 1014 auf 1o12 Jahre abkurzen konne; schlieDlich W. Pickerirtg schlagt eine Art Mittelweg zwischen der Kollisionshypothese und den modernen Anschauungen vor [38].Neu ist dagegen, so weit mir bekannt, die Heranziehung des Phanomens zu einer palaoklimatischen Hypothese.
6283Es zeigt sich in der Tat, daB mit seiner Hilfe der eigenartige Gang des Erdklimas zum ersten und bisher einzigen Male befriedigend dargestellt werden kann, so befriedigend, daD man (abgesehen von dem reellen Zusammenschub beim Ge-birgsfaltungsprozel3) ohne die physikalisch vollig unhaltbaren Pol-und Kontinentenverschiebungen auskommen kann. Die, wie wir fast sagen konnen, gluckliche Tatsache, dal3 bei oberflachlicher Betrachtung das Novaphiinomen fur die Geologie unmoglich in Frage zu kommen scheint, laBt die Gefahr, daB es als ad hoc konstruiert erscheint, nicht zu. Und hierin liegt der gewaltige Vorsprung: DaB zwei grofle Gebiete der Naturwissenschaft vollig u n a b h a n g i g voneinander ein Problem prufen, das moglicherweise in beiden eine fundamentale Rolle spielt.
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