Single-Leg-Stance (Flamingo) Radiographs to Assess Pelvic Instability: How Much Motion Is Normal?

BackgroundChronic pelvic instability is a relatively uncommon cause of pelvic and low-back pain. Patients present with feelings of instability and mechanical symptoms. Static radiographs are often inadequate to detect abnormal relative motion between the hemipelves consistent with chronic pelvic ins...

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