Kaymaz, NazanKaymaz, Burak2025-01-272025-01-2720222458-88652459-1505https://doi.org/10.22391/fppc.1065332https://search.trdizin.gov.tr/tr/yayin/detay/1113834https://hdl.handle.net/20.500.12428/15420Introduction: Osteoid osteoma (OO) is a small, benign bone neoplasm that has a well demarcated nidus surrounded by a reactive zone of sclerosis. It is most common in the long bones and only rarely in the patella. Case Presentation: An eight-year-old girl was admitted to the outpatient clinic with the complaint of anterior knee pain. She had been suffering from pain for approximately one year. The patient had a patellar osteoid osteoma. Surgical curettage of the lesion was performed, and the patient was free of pain the day after the surgery. Conclusions: Although Patellar OO is rare, it should be included in the differential diagnosis of persistent knee pain in children and young adults.eninfo:eu-repo/semantics/openAccessPediatriOrtopediArticle72596310.22391/fppc.10653321113834