Patients have injuries from sports, car accidents, or assault. These injuries can be treated through physiotherapy. Given the right treatments and an injury that will respond to treatment, much progress can be made. Full functioning may be regained. It may even be possible for them to go back to work rather than being laid up at home. Physiotherapy for cardiac surgery patients is often not carried out by physiotherapy staff. Nurses in hospitals and clinics who are trained to deal with these areas of rehabilitation for cardiac surgery will do the work. However, physiotherapists sometimes help, and the principles are the same. The physiotherapist will instruct the patient about what activities are acceptable in the weeks and months after surgery. Other times, the patient will try to use the affected limb but will naturally fall back on the limb that is functioning well. In this case, stroke rehabilitation may involve gently restraining the healthy limbs. It can be a difficult task of stroke rehabilitation to help victims relearn switching from one task to another. Another of the sports injuries that physiotherapy is used for is tennis elbow. One might get tennis elbow from playing tennis, certainly, but it can also come about from any activity that involves twisting the wrist. Sports injuries like tennis elbow are treated with a comprehensive plan of physiotherapy. Neck injuries can cause quadriplegia, which requires special treatments. An important issue in spinal cord injury is the level of the damage. If a physiotherapy program is not followed faithfully, the spine will begin to atrophy below the level of the spinal cord injury. The spine will shrink and the whole body below that point will become weaker as time goes by. The final step before getting that first job to start a physiotherapy career is accreditation. The Commission on Accreditation in Physical Therapy Education (CAPTE) is tasked with ensuring that physiotherapists are fit for the licensing exam. At that point, the licensure exam must be taken and passed.