<unk>  affects the metatarsal head (usually the second or third metatarsal head) and is characterized at pathologic analysis by collapse of the subchondral bone, osteonecrosis, and cartilaginous fissures. The cause of<unk>  is controversial and is probably multifactorial. A traumatic insult in the form of either acute or repetitive injury and vascular compromise are the most popular theories.<unk>  is more common in women and most commonly manifests during adolescence. High-heeled shoes have been implicated as a causative factor. Patients may present with pain and limited motion, although symptoms may not begin until osteoarthrosis has developed.
Freiberg infraction
Episiotomy
Castration
Pollicization
Electron therapy
Tubal ligation
Impella device
Caesarean section