MCQ Orthopedics Answer 17

The Correct Answer is Both A&B

The patient described in this case had an aneurysmal bone cyst. These resolve 50% to 75% of the time after initial curettage. Twenty-five to 50% of the time there is a recurrence requiring recurettage, cryotherapy, and bone grafting, which effects an excellent cure rate. The clinical findings and the radiograph are also compatible with unicameral bone cyst, which generally resolves and heals completely after simple curettage. Osteoid osteoma almost always presents with bone pain rather than fracture. The lesion on the radiograph is sclerotic rather than lytic; there is no malignant potential, and simple excision is the only treatment needed. Primary lymphoma in bone generally produces a lesion with much less distinct margins than those found in this case, and there is usually some new bone formation. Osteosarcoma has a different radiographic appearance than this, with both bone destruction and new bone formation.

Ref: Schwartz SI (ed): Principles of Surgery, ed 7. McGraw-Hill, 1999, p 2013.

Category: Orthopedics MCQs