The infection spreads through the medullarycanal and penetrates the metaphyseal cortex, causing a subperiosteal abscess.
感染通过骨髓腔扩散并且穿透干骺端骨皮质从而引起骨膜下脓肿。
2
In infected nonunions its benefit appears to lie not so much in its ability to provide new bone, but in its cleansing effects caused by the continuous rinsing of the medullarycanal.