Table 1.

Inclusion and exclusion criteria.

Inclusion criteria

1)Surgery for an AFF performed between 2010 and 2019 at the participating institutions 2)History of BMA (zoledronate acid or denosumab) administration before diagnosis of AFF 3)Available treatment information in the medical records

Exclusion criteria

1)Refusal to participate in the current study based on the opt-out 2)Patient’s inappropriateness for the study as deemed by the principal investigator