Does ankylosing spondylitis cause reduced range of motion?

Inflammation in ankylosing spondylitis can make spinal and pelvic joints painful and stiff. Guarding against discomfort may make turning, bending, or standing upright harder. Over time, ongoing inflammation can change the tissues around the spine and reduce flexibility. Some people also notice difficulty taking a deep breath if the joints connecting the ribs are involved.

Reduced movement can have other explanations, such as an injury, osteoarthritis, muscle tightness, or a nerve problem. The symptom does not establish a diagnosis by itself. A clinician compares both sides where relevant, checks strength and sensation, and asks how movement changes with rest or activity.

Use comfortable daily movement rather than staying in one position for long periods. A physiotherapist can show spinal, hip, chest-expansion, and posture exercises matched to your ability. Move gradually, keep breathing normally, and do not push through sharp or escalating pain. Note tasks that have become difficult, such as looking over a shoulder or reaching overhead, so your appointment focuses on practical changes.

Book an assessment if movement is progressively restricted, stiffness repeatedly follows rest, or pain interrupts sleep. Get urgent help for sudden weakness, new bladder or bowel changes, numbness in the saddle area, or severe pain after an injury. Prompt review is also appropriate for breathing difficulty or a hot swollen joint with fever.

Ask which joints appear restricted, whether imaging or blood tests could clarify the cause, and which movements should be prioritised. Discuss how to adapt work, driving, or sleep positions while treatment is being planned.