This is one of the most common regional pain syndromes and affects between 1.8 and 5.6 patients per 1000 per year (1).
It may be seen in all age groups but is more common between the fourth and sixth decades of life (1).
It occurs more frequently in women (female to male ratio 4:1) and patients with coexisting low back pain (LBP), osteoarthritis (OA), iliotibial band (ITB) tenderness, and obesity (3).
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