Table 1.

Data of the 11 patients with a nerve compression injury to the S1 nerve root

Age (range) years	Female : Male	Duration of the paresis; medium range (weeks)	MRC foot flexors (medium range)	Weakness of hip abduction (patients)	Atrophy of the ipsilateral gluteus maximus muscle (patients)	Nerve conduction studies normal : N.suralis/mot. peroneus (patients)	Axonal lesion signs in the ipsilateral gastrocnemius muscle (patients)	Axonal lesion signs in the ipsilateral gluteus maximus muscle (patients)	Axonal lesion signs in the rectus femoris/tibialis anterior muscle, peroneus longus muscle/contralateral tibialis anterior muscle (patients)	Straight leg raise test positive
47 year (31–70)	5:6	5.8 (2–24)	3.4/5 (2/5–4/5)	5/9a	6/10b	11/11	11/11	9/11	0/11	11/11

MRC Medical Research Council

^aND in two patients

^bND in one patient