simple bone cyst

Question 1

what is it?

Answer 1

single cavity benign fluid filled cyst in a bone

Question 2

what causes it?

Answer 2

defect in physis and therefore metaphyseal in long bones

Question 3

where does it usually occur?

Answer 3

proximal humerus and femur, also talus or calcaneus

Question 4

how do they clinically present?

Answer 4

asymptomatic, incidental finding
can weaken bone = pathological fracture

Question 5

what investigations are used?

Answer 5

x-ray, MRI

Question 6

how is it managed?

Answer 6

curettage and bone grafting +/- stabilisation may be required