Clinical Examination / Spine
Ankylosing Spondylitis Clinical Examination Spine
Look (Standing)
General Appearance:
Male, middle-aged adult.
Head translated forwards.
Decreased horizontal gaze.
"Question mark" posture.
Loss of cervical and lumbar lordosis.
Kyphotic deformity of the thoracic spine.
Flexed attitude of hips and knees.
Eyes: Check for uveitis.
Feel (Standing)
Pain:
Over sacroiliac joints (SIJ).
Throughout the spine (indicative of Romanus lesions or pseudoarthrosis).
Chest Expansion:
Measure at the nipple level; should be at least 7 cm.
Move (Standing)
Walking Assessment:
Observe gaze pattern while walking.
Assess for hip or knee flexion contractures.
Stiff Cervical Spine:
Measure forward gaze angle.
Assess chin-brow angle.
Check for absence of lateral bend.
Measure occiput-to-wall distance.
Stiff Thoracic Spine:
Inability to flatten the back against a wall.
Loss of rotation with pelvis fixed.
Stiff Lumbar Spine:
Reduced flexion on Schober's test.
Lie Down
Posture:
Unable to rest head back without pillows.
Tests:
Perform FABER test for sacroiliitis.
Assess the range of motion (ROM) in hips and knees for any fixed flexion.
Finishing Steps
Conduct a full neurologic and vascular examination.
History
Gather a detailed history relevant to ankylosing spondylitis.
Imaging
Order X-rays to confirm diagnosis and assess structural changes.
Related FRCS revision notes Written/reviewed by Kishore Puthezhath
Professor of Orthopaedics and Consultant Paediatric Orthopaedic Surgeon
FRCS (Tr & Orth) revision resource
Reviewed: September 2026
Core revision references: Miller's Review of Orthopaedics; Campbell's Operative Orthopaedics; Orthobullets . Current specialty guidelines are linked within individual notes where applicable.
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