Pathology and symptomatology of unilateral sacralization of transverse process of the fifth lumbar vertebrae articulating with sacral and iliac bone is presented. Five patients (4 females, 1 male) aged 27-42 are reported. Symptoms included spinal pain, radicular pain, L4/L5 disc prolapse, and lumbar scoliosis. Patients were operated on: resection of the transverse process has been done in all cases, discectomy in 2 cases. Good results were found at the mean follow-up of 3 years. Author's experience supports idea of early surgical intervention in described condition.
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