| Objective To determine the clinical diagnosis, identification, and the treatment of the chondroblastoma in patella and conduct a review of the literature to further enhance the understanding and mastery of the disease.Methods We reported 3 cases of chondroblastoma in the patella, who were admitted to Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology from July 2014 to January 2022 and were assessed by history taking, physical examination, X-ray, CT, or MRI scan. Clinical imaging suggested unicystic or multicystic expansive bone destruction in the patella. Patients were evaluated before surgery and afterwards underwent intralesional curettage, cauterization, and allogeneic/autogenous bone grafting. One patient had a pathologic fracture, in whom the fragments were reduced and fixed with Kirschner needles and wires.Results All patients were pathologically diagnosed as chondroblastoma in patella, one with aneurysmal bone cyst with pathologic fracture. The wounds healed well and internal fixation was stable. During follow-up, all patients had good joint activity and achieved full weight bearing without tumor recurrence postoperatively.Conclusion The chondroblastoma in patella is a rare tumor. If combined with aneurysmal bone cyst, the diagnosis might be easily misdiagnosed. The diagnosis is based on the clinical examination, imaging data, and the pathologic diagnosis. It can most often be adequately treated with thorough curettage intralesionally, intracapsular cauterization, and bone grafting adequately. |
