The present study attempted to characterize laxity in cruciate deficient knees using the Genucom System comparing the neutral to the resting position of the tibia. A quadriceps active technique was compared to a passive protocol at four knee flexion angles: 60, 70, 80 and 90 degrees. Eight ACL and eight PCL injured subjects performed active and passive anterior-posterior knee drawer tests. These tests were performed during two sessions to verify their reliability. Posterior and anterior laxity were recorded for the PCL and the ACL injured subjects, respectively. Laxity was measured at forces of 60, 90 and 130 Newtons. A feedback unit (Biostim 6010) was used to monitor muscular contraction during application of protocols. Results revealed a significant anterior tibial shift (p $<$.05) in the PCL injured patients when comparing active to passive tests. No significant anterior tibial shift occurred in the ACL injured patients when performing the same comparison. The Genucom produced reliable results across two sessions for both PCL and ACL groups. Posterior laxity of PCL injured subjects was similar for knee flexion angles between 60 and 90 degrees. ACL injured subjects had statistically similar anterior laxity at knee flexion angles between 60 and 90 degrees.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.61123 |
| Date | January 1992 |
| Creators | Batista, Wagner Calio |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Arts (Department of Physical Education.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001291399, proquestno: AAIMM74735, Theses scanned by UMI/ProQuest. |
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