What question did this study set out to answer?

To assess the diagnostic validity of KT-1000 arthrometer anterior knee laxity measurements in conscious versus unconscious states at 15, 20, and 30 pounds of force.

July 1, 1992The American Journal of Sports Medicine

KT-1000 arthrometer: Conscious and unconscious test results using 15, 20, and 30 pounds of force

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Authors

CHCarl L. HighgenbotenUniversity of North Texas AJAllen W. JacksonUniversity of North Texas KJKen A. Jansson

Discussion

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Implication

Diagnostic study shows greater anterior knee laxity under anesthesia and 30 pounds of force in ACL injuries, indicating increased diagnostic accuracy with higher load.

Key Points

To assess the diagnostic validity of KT-1000 arthrometer anterior knee laxity measurements in conscious versus unconscious states at 15, 20, and 30 pounds of force.
Evaluated N=68 patients with confirmed anterior cruciate ligament disruption.
Performed anterior-posterior drawer tests at 20 degrees of knee flexion during conscious and unconscious states at forces of 15, 20, and 30 pounds.
Anterior laxity measurements were significantly higher in the unconscious state compared to the conscious state (P < 0.01), with ACL-disrupted knees showing significantly greater displacement than normal knees (P < 0.01).
Differences between injured and uninjured knees enlarged significantly as force increased (P < 0.01), with 81% to 83% demonstrating a side-to-side difference >2 mm at 30 pounds versus 64% to 72% at 20 pounds.
A compliance index difference >1 mm occurred in 79% of patients between 15 and 30 pounds, though approximately 20% failed to exceed standard diagnostic laxity thresholds.

Cite This Study

Highgenboten et al. (1992) studied this question.

synapsesocial.com/papers/6a94fe8cc163d75667fa628b https://doi.org/10.1177/036354659202000415

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July 1, 1992The American Journal of Sports Medicine

KT-1000 arthrometer: Conscious and unconscious test results using 15, 20, and 30 pounds of force

View Full Paper

Ask AI

Bookmark

Authors

CHCarl L. HighgenbotenUniversity of North Texas AJAllen W. JacksonUniversity of North Texas KJKen A. Jansson

Discussion

Member takes

Implication

Diagnostic study shows greater anterior knee laxity under anesthesia and 30 pounds of force in ACL injuries, indicating increased diagnostic accuracy with higher load.

Key Points

To assess the diagnostic validity of KT-1000 arthrometer anterior knee laxity measurements in conscious versus unconscious states at 15, 20, and 30 pounds of force.
Evaluated N=68 patients with confirmed anterior cruciate ligament disruption.
Performed anterior-posterior drawer tests at 20 degrees of knee flexion during conscious and unconscious states at forces of 15, 20, and 30 pounds.
Anterior laxity measurements were significantly higher in the unconscious state compared to the conscious state (P < 0.01), with ACL-disrupted knees showing significantly greater displacement than normal knees (P < 0.01).
Differences between injured and uninjured knees enlarged significantly as force increased (P < 0.01), with 81% to 83% demonstrating a side-to-side difference >2 mm at 30 pounds versus 64% to 72% at 20 pounds.
A compliance index difference >1 mm occurred in 79% of patients between 15 and 30 pounds, though approximately 20% failed to exceed standard diagnostic laxity thresholds.

Cite This Study

Highgenboten et al. (1992) studied this question.

synapsesocial.com/papers/6a94fe8cc163d75667fa628b https://doi.org/10.1177/036354659202000415

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