Stand upright with your legs shoulder-width apart and your immobilised arm crossed over your chest to the opposite shoulder.
Place your other hand on your hip with your fingers facing in towards your stomach.
The exercise starts as a rotation from the trunk towards the same side as that of the immobilised arm.
For example, if the right arm is injured it is crossed over the chest immobilised and touching the left shoulder throughout the entire exercise.
For an immobilised right arm.
Begin by bending forward at the trunk and rotating to the right stretching out the left arm down towards the ankle of the right foot.
The bend and rotation is done by flexing the knees slightly and moving through the hips.
Do not arch the lower back. Keep your head in line with your spine.
Return back up to the neutral starting position and perform a rotation to the left side, keeping your immobilised arm tucked tightly up into your opposite shoulder.
Rotate your hips whilst maintaining the bend through the trunk and keep your back straight with your head aligned with your spine.
Use your knees and hips to assist in the bend, taking care not to overarch your lower back.
Perform this exercise at a slow controlled pace, within the limits of your mobility.