Multiplanar Knee Laxity and Perceived Function During Activities of Daily Living and Sport
- UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
- Christopher K. Rhea, Associate Professor (Creator)
- Scott Ross, Associate Professor (Creator)
- Randy J. Schmitz, Associate Professor (Creator)
- Sandra J. Shultz, Professor and Chair (Creator)
- Institution
- The University of North Carolina at Greensboro (UNCG )
- Web Site: http://library.uncg.edu/
Abstract: Context: Greater knee-joint laxity may lead to a higher risk of knee injury, yet it is unknown whether results of self-reported outcome measures are associated with distinct knee-laxity profiles.
Objective: To identify the extent to which multiplanar knee laxity is associated with patient-reported outcomes of knee function in healthy individuals during activities of daily living and sport.
Design: Descriptive laboratory study.
Setting: University research laboratory.
Patients or Other Participants: Forty healthy individuals (20 men, 20 women; age=18–31 years).
Main Outcome Measure(s): All participants were given the Knee Outcome Survey Activities of Daily Living Scale (KOS-ADL) and Sports Activities Scale (KOS-SAS) and subsequently measured for knee laxity in the sagittal, frontal, and transverse planes. Separate backward stepwise regression analyses were performed to determine the extent to which multiplanar knee-laxity values predicted KOS-ADL and KOS-SAS scores within each sex.
Results: Women had higher magnitudes of anterior, posterior (POSTLAX), varus (VARLAX), valgus (VALLAX), and internal-rotation laxity than men and trended toward greater external rotation (ERLAX) laxity. Greater POSTLAX, less VALLAX, and greater VARLAX was associated with lower KOS-ADL scores (KOS-ADL=-4.8 [POSTLAX], + 3.3 [VALLAX] - 2.2 [VARLAX] + 100.4, R2=0.74, P < .001) and greater POSTLAX and less VALLAX was associated with lower KOS-SAS scores (KOS-SAS=-8.2 [POSTLAX], + 3.6 [VALLAX] + 96.4, R2=0.67, P < .001) in women. In men, greater POSTLAX and less ERLAX was associated with lower KOS-SAS scores (KOS-ADL=-4.7 [POSTLAX], + 0.9 [ERLAX] + 96.4, R2=0.49, P < .001).
Conclusions: The combination of POSTLAX with less relative VALLAX (women) or less relative ERLAX (men) was a strong predictor of KOS scores, suggesting that a self-reported outcome measure may be beneficial as part of a preparticipation screening battery to identify those with perceived functional deficits associated with their knee laxity.
Multiplanar Knee Laxity and Perceived Function During Activities of Daily Living and Sport
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Created on 10/5/2016
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Additional Information
- Publication
- Journal of Athletic Training 2015; 50(11):1199-1206
- Language: English
- Date: 2015
- Keywords
- functional deficits, knee injury, Knee Outcome Survey