Snapping Biceps Femoris Syndrome: A Case Presentation and Review of Current Literature.

Snapping of the biceps femoris tendon over the fibular head is a cause of symptomatic lateral knee pain. We presented the case of an active patient in his mid-20s who had bilateral snapping of his biceps femoris tendon, with no history of trauma. The pathophysiology in our case was thought to be secondary to prominent fibular heads. We review the literature and outline the anatomical abnormalities of the biceps femoris tendon's insertion and fibular head morphology that are thought to contribute to this condition. The pathophysiology of snapping biceps femoris tendon is likely multifactorial. Anatomical abnormalities of the biceps femoris tendon's insertion or the fibular head are thought to contribute, and correction of these abnormalities can alleviate patients' symptoms. We propose a classification system that can describe these anatomical abnormalities and guide management.