RT Book, Section A1 Goodman, Catherine A1 Helgeson, Kevin SR Print(0) ID 1133951258 T1 Ankylosing Spondylitis T2 Exercise Prescription for Medical Conditions: Handbook for Physical Therapists YR 2011 FD 2011 PB McGraw-Hill Education PP New York, NY SN 9780803617148 LK fadavispt.mhmedical.com/content.aspx?aid=1133951258 RD 2024/04/19 AB This systemic inflammatory condition primarily affects the sacroiliac joints and joints of the spine and can also affect peripheral joints. The condition leads to fibrosis and ossification of the involved articulations. The cause of the condition is unknown, although it may have environmental and genetic origins. This condition is usually initiated by an insidious onset of low back or hip pain and stiffness. Severe complications, including spinal stenosis and vertebral fractures, that limit mobility can occur. Individuals with this condition will have limited mobility due to joint stiffness that is particularly severe in the morning. Pain and related fatigue symptoms will limit their ability to initiate exercise and recreational activities.