Pilling D W, Levick R K
Pediatr Radiol. 1978 Feb 28;6(4):215-21. doi: 10.1007/BF00975540.
The clinical and radiological features of Trisomy of the short arm of the ninth chromosome and of the Nail Patella Syndrome, both of which conditions are related to abnormalities of the ninth chromosome, are compared. Dislocation of the head of radius is seen in both conditions, as is a diminished patello condylar ratio. Several of the features described as being sporadic anomalies in the Nail Patella Syndrome are also seen in some patients with Trisomy of the Ninth Chromosome. The Trisomy 9 group also have several anomalies which are shared with Trisomy 21, Trisomy 17/18, Trisomy 13/15 and Trisomy 4, suggesting that some of these changes are a non-specific result of chromosome abnormality rather than being specific to the Trisomy 9.
对9号染色体短臂三体综合征和指甲髌骨综合征的临床及放射学特征进行了比较，这两种病症均与9号染色体异常有关。两种病症均可见桡骨头脱位以及髌股比例减小。在指甲髌骨综合征中被描述为散发性异常的一些特征，在部分9号染色体三体患者中也可见到。9号染色体三体组还具有一些与21号染色体三体、17/18号染色体三体、13/15号染色体三体和4号染色体三体共有的异常，这表明其中一些变化是染色体异常的非特异性结果，而非9号染色体三体所特有。
