چكيده لاتين :
Although osteoid osteoma is a relativelycommonlesion, it rarely occurs at elbow.
We report two cases of osteoid osteoma of elbow in trochlea. Diagnosis was delayed because of non-specific clinical and radiological
features. The two patients suffered from flexion contracture of elbow due to synovitis, while at the same time, pronation
and supination remained normal. Only one of the patients complained of specific nocturnal pain. Both patients had latencies
between the onset of symptoms and the appearance of radiological signs. Open surgical excision of the nidus resulted
in completerelief and motionrecovery in both cases. Diagnostic difficulties and treatmentoptions are discussedbelow.
