Oestreich A E, Ahmad B S
Department of Radiology, Children's Hospital Medical Center, Cincinnati, Ohio 45229-2899.
Skeletal Radiol. 1993;22(2):115-9. doi: 10.1007/BF00197989.
The metaphyseal collar due to the periphysis is lost (in 98% of 49 subjects) as an early sign of rickets and returns with recovery. The term "pseudophysis" refers to that unossified metaphyseal osteoid and cartilage as in rickets. The collar is intact in metaphyseal chondrodysplasias (a helpful sign in differential diagnosis from rickets), is shortened in achondroplasia, and frequently is spared in osteomyelitis, luetic bone disease, and Caffey infantile cortical hyperostosis. The periphyseal bone bark is thinned, but often apparent, in rickets, and is not thinned in cases of tyrosinosis and phenylketonuria.
作为佝偻病的早期征象，因骨膜周缘形成的干骺端骨领缺失（49例中有98%），恢复时又重新出现。“假骨骺”一词指佝偻病时未骨化的干骺端类骨质和软骨。在干骺端软骨发育异常时骨领完整（这是与佝偻病鉴别诊断的一个有用体征），在软骨发育不全时骨领缩短，在骨髓炎、梅毒性骨病和婴儿骨皮质增生症时骨领常不受影响。在佝偻病时，骨膜周缘的骨皮质变薄，但常仍可见，而在酪氨酸血症和苯丙酮尿症时骨皮质并不变薄。
