Anterior cruciate ligament cyst: a rare finding

Abstract

Cysts in the anterior cruciate ligament is difficult to diagnose due to the lack of specific symptoms and signs. Incidence of this disorder was the highest for 20–40 years of age group. Occurs predominantly in males. Our aim was to report a case and review the literature about this uncommon lesion. We carried out a review of medical records, photographic record of diagnostic method, and review from the literature. 18 years-old man with pain in the right knee for 04 months. He plays two hours of soccer everyday for a few years. Physical examination with specific knee negative tests, without bruise or edema. Denies torsion, trauma and surgeries. Magnetic resonance imaging demonstrates intrasubstantial lobulated cyst in the anterior cruciate ligament. This report demonstrates the difficulty of diagnosing this lesion, since its physical examination is non-specific, and it can simulate more serious pathologies, requiring complementary tests for its correct diagnosis.