I. Indications: Evaluation for Sacroiliac joint disease
- Sacroiliitis in Ankylosing Spondylitis
II. Technique: Passive Thigh Hyperextension
- Patient lies supine
- Fix Lumbar Spine against table (eliminates lordosis)
- Patient flexes hip and knee on affected side
- Patient holds knee with both hands
- Examiner hyperextends opposite thigh over side of table
III. Interpretation: Positive Test
- Pain on thigh hyperextension suggests sacroiliitis

