Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Moment arm (MA) (in metres) and torque (Nm) around the knee across a range of joint angles. 0° refers to extended position, 140° refers to flexed position. Black arrows depict reported ranges of joint angles used for bipedal walking, quadrupedalism and climbing (Watson et al. 2009).
