Background the current "gold standard" for treatment of chronicfracture nonunion in the metaphyseal-diaphyseal region of the fifth metatarsal is intramedullary screw fixation.
背景：目前治疗第五跖骨干骺端慢性骨不愈合的金标准是髓内螺钉固定。
2
Data regarding the association between low bone mass and fracture risk are limited for children with chronic illness.
关于慢性病儿童低骨量和其骨折危险度相关性的数据仍很有限。
3
They had no previous history of acute or chronic disease of the wrist and no wrist or forearm fracture history.