Jonsson, Håkan, Johan Kärrholm, and Lars-Gunnar Elmqvist. 1993. “Laxity After Cruciate Ligament Injury in 94 Knees: The KT-1000 Arthrometer Versus Roentgen Stereophotogrammetry”. Acta Orthopaedica 64 (5):567-70. https://doi.org/10.3109/17453679308993694.