Challenges in the Diagnosis and Treatment of Aneurysmal Bone Cyst in Patients with Unusual Features

Table 1

Clinical and management features of the 7 recurrent ABC patients.

Location	Age (years)	Sex	Adjuvant	Bone graft	Time to first recurrence (months)
Distal Humerus^S	8	F	NO	Chips, Vitoss	48
Proximal Humerus	4	M	H2O2	Chips	24
Distal Tibia^S	8	M	LN	Chips	6
Proximal Femur^P	13	M	Cement	BC	55
Proximal Femur^P	3	M	No	DBM	24
Proximal Femur	5	M	LN	DBM, chips	12
Proximal Humerus^P	8	M	No	DBM	37

M: male; F: female; H₂O₂: hydrogen peroxide; LN: liquid nitrogen; BC: bone cement; DBM: demineralized bone matrix; chips: allograft chips; Vitoss: calcium triphosphate bone graft substitute. ^SSolid ABC variant. ^PPathological fracture.