Figure 1.

Radiographic Hallmarks of SRP

(A) R01-314A, newborn. A/P view showing the characteristic trident pelvis (arrow) and the long narrow chest with horizontal ribs.

(B) R01-314A, newborn. The arrow identifies the distal end of the femur, showing metaphyseal spikes.

(C) R01-314A, newborn. There is no polydactyly in the hand (arrow).

(D) R06-237A, 20 weeks gestation. The arrow identifies metaphyseal spikes of the distal humerus.

(E) R00-097A, 20 weeks gestation. The arrow identifies the preaxial polydactyly of the foot.

(F) R01-314B, 20 weeks gestation. The arrow identifies postaxial polydactyly of the foot.

(G) R06-237A, 20 weeks gestation. The arrow identifies postaxial polydactyly of the foot.

(H) R00-097A, 20 weeks gestation. The lower extremity shows a shortened femur, tibia, and fibula with metaphyseal spikes (arrow).