Association between Foot Posture Asymmetry and Static Stability in Patients with Knee Osteoarthritis: A Case-Control Study

Figure 2

Example of COP sway path test. (a) Participant performing a both-leg static evaluation on the machine; (b) COP sway in a healthy adult; (c) COP sway in a KOA patient.

(a)

(b)

(c)