Aneurysmal bone cyst accounts for 1% of primary bone tumors and is one of the benign tumor-like lesions. Patellar involvement is quite rare. Its development on the basis of any previous lesion such as chondroblastoma is called secondary aneurysmal bone cyst. A 26-year-old male patient presented with right knee pain of three-year history. Physical examination showed a firm, immobile swelling at the anterior aspect of the right knee, without increase in temperature or redness of the skin. There was no pain on palpation and joint range of motion was normal. Radiological studies were suggestive of an aneurysmal bone cyst. At surgery, the cystic lesion was removed via curettage and the residual cavity was filled with an autogenous bone graft taken from the iliac wing. The histopathologic diagnosis was secondary aneurysmal bone cyst in association with chondroblastoma. During a 1.5-year follow-up, the patient had no complaint and no recurrence was observed.
Ozan, F., & Toker, G. (2010). Secondary aneurysmal bone cyst of the patella. Acta Orthopaedica Et Traumatologica Turcica, 44(3), 246-249.
AMA
Ozan F, Toker G. Secondary aneurysmal bone cyst of the patella. Acta Orthopaedica et Traumatologica Turcica. November 2010;44(3):246-249.
Chicago
Ozan, Firat, and Gokhan Toker. “Secondary Aneurysmal Bone Cyst of the Patella”. Acta Orthopaedica Et Traumatologica Turcica 44, no. 3 (November 2010): 246-49.
EndNote
Ozan F, Toker G (November 1, 2010) Secondary aneurysmal bone cyst of the patella. Acta Orthopaedica et Traumatologica Turcica 44 3 246–249.
IEEE
F. Ozan and G. Toker, “Secondary aneurysmal bone cyst of the patella”, Acta Orthopaedica et Traumatologica Turcica, vol. 44, no. 3, pp. 246–249, 2010.
ISNAD
Ozan, Firat - Toker, Gokhan. “Secondary Aneurysmal Bone Cyst of the Patella”. Acta Orthopaedica et Traumatologica Turcica 44/3 (November 2010), 246-249.
JAMA
Ozan F, Toker G. Secondary aneurysmal bone cyst of the patella. Acta Orthopaedica et Traumatologica Turcica. 2010;44:246–249.
MLA
Ozan, Firat and Gokhan Toker. “Secondary Aneurysmal Bone Cyst of the Patella”. Acta Orthopaedica Et Traumatologica Turcica, vol. 44, no. 3, 2010, pp. 246-9.
Vancouver
Ozan F, Toker G. Secondary aneurysmal bone cyst of the patella. Acta Orthopaedica et Traumatologica Turcica. 2010;44(3):246-9.