Objectives To examine the effectiveness of imagery on pain, edema, and range of motion in athletes who have sustained a grade II ankle sprain. Participants The sample consisted of 18 active male athletes, aged from 18 to 30 years, with a grade II ankle sprain, confirmed by ultrasound testing. The participants were randomly divided into two conditions: a relaxation and imagery condition ( n=9) and a control condition ( n=9). The participants in the relaxation and imagery condition received 12 individual sessions of imagery rehearsal in addition to a normal course of physiotherapy, while the participants in the control condition followed only the physiotherapy treatment. Main outcome measures Participants were administered a Visual Analogue Scale (VAS) in order to measure acute pain intensity. Edema was evaluated with the water volumetric displacement method. Ankle range of motion (ROM) was assessed using a goniometer. Results The study did not show demonstrable effects on pain, edema, and ROM after the application of imagery treatment. Conclusions Further research could examine the relationship between different types of imagery and rehabilitation from sport injury using standardized imagery instruments.