Examining Ankle-Joint Laxity Using 2 Knee Positions and With Simulated Muscle Guarding
Hanlon S, Caccese J, Knight CA, Swanik CB, & Kaminski TW. J Athl Train, 2016; 51(2): 111-117. doi:10.4085/1062-6050-51.3.06
Take Home Message: Knee flexion to 90 degrees limits ankle laxity with the talar tilt test in comparison to a fully extended knee. However, knee position has no effect on anterior drawer laxity. Muscle guarding will limit our ability to accurately assess ankle laxity with a talar tilt or anterior drawer test.
The accuracy and reliability of special tests, such as the anterior drawer and talar tilt tests, can be affected by many factors, including muscle guarding, patient positioning, and clinician experience. It is critical for clinicians to know how to properly perform these tests at the ankle to optimize test performance. The authors of this study compared ankle-joint laxity and muscle activity during these ligamentous ankle special tests at different knee positions. They also investigated how muscle guarding affects these tests.