Figure 7. The change in range of motion from the beginning to the end of the study for knee flexion and extension in the heat and control groups

From

Continuous Low Level Heat Wraps; Faster Healing and Pain Relief during Rehabilitation for Back, Knee and Neck Injuries

Jerrold Petrofsky, Michael Laymon, Faris Alshammari, Iman Akef Khowailed, Haneul Lee

World Journal of Preventive Medicine. 2015, 3(3), 61-72 doi:10.12691/jpm-3-3-3