Contractures secondary to immobility: is the restriction articular or muscular? An experimental longitudinal study in the rat knee
Deutscher übersetzter Titel: | Kontrakturen infolge Ruhigstellung: ist die Bewegungseinschraenkung gelenk- oder muskelbedingt? Eine experimentelle Langzeitstudie an Ratten-Kniegelenken |
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Autor: | Trudel, G.; Uhthoff, H.K. |
Erschienen in: | Archives of physical medicine and rehabilitation |
Veröffentlicht: | 81 (2000), 1, S. 6-13, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0003-9993, 1532-821X |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199912408097 |
Quelle: | BISp |
Abstract des Autors
Objectives: To measure articular structures' contribution to the limitation of range of motion after joint immobility. Study Design: Experimental, controlled study involving 40 adult rats that had one knee joint immobilized in flexion for durations of 2, 4, 8, 16, and 32 weeks; 20 rats underwent a sham procedure. The angular displacement was measured both in flexion and extension at three different torques. Myotomy of transarticular muscles allowed isolation of the arthrogenic component of the contracture. Results: A contracture developed in all immobilized knees. The articular structures were incrementally responsible for the limitation in range of motion (from 12.6ø+/-6.7ø at 2 weeks to 51.4ø+/-5.4ø at 32 weeks). The myogenic restriction proportionately decreased over time (from 20.1ø+/-8.4ø at 2 weeks to only 0.8ø+/-7.2ø at 32 weeks). The increase in the arthrogenic component of contracture was predominant in extension. Conclusion: This study quantified the increasing role of arthrogenic changes in limiting the range of motion of joints after immobility, especially as the period of immobility extended past 2 weeks. These data provide a better understanding of joint contracture development and can be used to guide therapeutic approaches. Verf.-Referat