Delayed femoral head appearing, coxa valga or, on the contrary, coxa vara are common findings. Valgus deformity of the knees , associated to flexion contracture, is another common finding. Clubfeet are another diagnostic feature occurring in almost every patient. Clubfeet are usually very stiff and require surgical correction. Particular findings are the adducted forefoot with a severe inward curvature of the metatarsals .
Hands are short and broad and deviated because of the ulnar shortness.
Non-progressive lumbar lordosis is present in all patients and it is probably related to flexion contractures of the hips. Cleft vertebral laminae are common in both cervical and lumbar spine. These curves usually onset during the first 2 years of life and they are not due to primary vertebral deformities. Most authors suggest an aggressive orthotic treatment and early spine fusion. Diastrophic dwarfs do not present atlo-axial instability or foramen magnum stenosis.