Pubic bone separation may occur during pregnancy when there is trauma to the pelvis, such as a sudden fall, a quick movement of the leg away from the body or a gradual stretching of the ligament surrounding the bone. Trauma during the birth itself may cause this condition. Care should be taken while exercising and stretching. Most hip and leg work where one or both legs are extended sideways may be contraindicated. These types of exercises that are performed with resistance are not recommended. Stretching that requires both legs to be apart are also not recommended.