Reliability of lumbar multifidus ultrasound assessment during the active straight leg raise test.
Gustavo Plaza-ManzanoMarcos J Navarro-SantanaJuan Antonio Valera-CaleroRaúl Fabero-GarridoCésar Fernández-de-Las-PeñasIbai López-de-Uralde-VillanuevaPublished in: European journal of clinical investigation (2021)
US is a reliable method to assess the LM thickness at rest and contracted during the ASLR in patients with LBP. The measurement at 3 seconds after maintaining ASLR, as well as the use of the mean of 3 measurements, has been shown to be the most reliable method for measuring LM muscle thickness during ASLR.