Spinal dysraphism presenting as acro-osteolysis: report of four cases.

The acro-osteolyses are a heterogeneous group of disorders characterized by bone resorption. The disorder may occur as familial, idiopathic, or secondary to vascular, inflammatory, or neurologic conditions. Acro-osteolysis is rare in association with spinal dysraphism. It is even rarer for it to be the presenting symptom in spinal dysraphism. We report here four patients in whom the diagnosis of spinal dysraphism was established while investigating for the various causes of acro-osteolysis. All four patients presented with trophic changes and acro-osteolysis. Hyperhidrosis in the affected limb was seen in three patients. One patient had leg pain, the others had no sensory or motor deficits. Magnetic resonance imaging showed spinal dysraphism in all four patients.