Arthroscopic excision as a viable treatment for intra-articular osteoid osteoma in the proximal humerus: A case report

Background Osteoid osteoma (OO) is rare in the intra-articular region of the proximal humerus. Although computed tomography-guided radiofrequency ablation is recognized as a useful treatment option, arthroscopic excision has recently been considered an alternative for intra-articular lesions. Case presentation We report the case of a 21-year-old man who underwent arthroscopic treatment for intra-articular OO in the proximal humerus. The patient presented with shoulder pain that exacerbated at night, which was diagnosed as intra-articular OO six months after symptom onset. Twelve months postoperatively, the patient had no recurrence of shoulder pain. Conclusions Based on the findings in this case, intra-articular OO should be considered as a differential diagnosis in young individuals with shoulder pain, and arthroscopic excision as a treatment option for intra-articular OO in the proximal humerus.