Testicular biopsies and hormone profiles were obtained from 23 paraple
gic patients who had sustained a complete spinal cord section. The hor
mone profiles were normal, but patients with a spinal lesion including
the T10-L2 metameres showed a particular pattern of germinal cell abn
ormalities. The atrophy is multifactorial, but may well include destru
ction of the sympathetic innervation of the testis by the lesion.