Six months after treatment, researchers concluded that those with and without hyaluronic acid injections completed certain tasks and exercises similarly including climbing stairs, walking for six minutes without stopping, and the chair rise.
Functional pain ratings different between the groups though. Individuals with hyaluronic acid knee injections had a decrease in pain ratings when climbing stairs and gait velocity, stride length, and step length was also higher after hyaluronic acid injection at six months. The researchers concluded that decreased functional pain severity is associated with hyaluronic acid injections. For more info, see: https://www.sciencedirect.com/science/article/pii/S1934148213000075