Intra-Articular Osteoid Osteoma as a Cause of Anteromedial Knee Pain

Abstract

A 32-year-old male patient presented to our clinic with chronic left knee pain that was ongoing for about 1.5 years. The patient visited several times our clinic and the other clinics; conservative treatment (including rest, knee brace, and ice application with NSAIDs) was recommended by various different doctors. The anamnesis, physical examination, and plain radiography were nonspecific. Early MRI findings mislead us to believe it is bone marrow edema. One and half years with noneffective treatment, the knee pain persisted. At the latest visit intra-articular osteoid osteoma was suspected and the knee MRI with CT was employed. Even though the diagnosis of intra-articular osteoid osteoma often presents a challenge for the surgeons, with a present awareness of intra-articular osteoid osteomas which lack the characteristic sclerotic lesions and nidus on plain X-rays and the aid of multislice CT, a correct diagnosis which warrants proper treatment can be achieved. The possibility of osteoid osteomas, especially in young adults with persistent knee pain with unknown reasons that show normal plain radiographs results, must not be overlooked. The treatment method of these lesions should be customized depending on the location of the lesion, experience of the surgeon, and cost of method.

Intraarticular osteoid osteoma of the knee misdiagnosed as meniscal tear: a case report

“…Intraarticular localization of osteoid osteoma is one condition that complicates the diagnosis and is frequently associated with delayed or misdiagnosis. Sagtas et al 6 reported a case of intraarticular osteoid osteoma in an adult male with a 1.5-year history of nonspecific pain. Conservative treatment, including rest, knee brace, and ice application with NSAIDs, was not effective.…”

Arthroscopic removal as an effective treatment option for intra-articular osteoid osteoma of the knee

“…Assoun et al [ 26 ] report that CT scan proved to be more accurate than MRI in detection of the nidus in 63% of cases. Also, CT scans proved to be a valuable tool in preoperative planning of the surgery[ 29 ]. Therefore, we have performed a CT scan in three of our patients.…”