Heselson N G, Cremin B J, Beighton P
Clin Radiol. 1979 Jan;30(1):79-85. doi: 10.1016/s0009-9260(79)80051-3.
Hypochrondroplasia is an inherited skeletal dysplasia that resembles achondroplasia in mild degree. Radiographic manifestations encountered in 12 affected individuals in South Africa include slight shortening of all segments of the tubular bones, moderate caudal diminution of the lumbar interpedicular distances, increased lumbar lordosis with sacral tilt and distal prolongation of the fibula. Hypochondroplasia can be distinguished from other osteochondrodystrophies such as achondroplasia, pseudoachondroplasia and metaphyseal chondroplasia by the recognition of its clinical and radiographic manifestations.20
软骨发育不全是一种遗传性骨骼发育不良，程度较轻时类似于软骨发育不全。在南非的12名患病个体中发现的影像学表现包括管状骨所有节段轻度缩短、腰椎椎弓根间距中度尾侧减小、腰椎前凸增加伴骶骨倾斜以及腓骨远端延长。通过认识其临床和影像学表现，软骨发育不全可与其他骨软骨发育不良如软骨发育不全、假性软骨发育不全和干骺端软骨发育异常相鉴别。
