TABLE 1.

Demographic data of patients.

Patient no.	Age	Gender	Level	Pfirrmann grading
Grade II/III
	22	F	L5/S1	II
	48	F	L5/S1	II
	25	M	L5/S1	II
	64	F	L4/L5	III
	30	M	L5/S1	III
	51	M	L4/L5	III
Grade IV/V
	80	F	L4/L5	IV
	78	F	L4/L5	IV
	40	M	L5/S1	IV
	51	F	L5/S1	V
	32	M	L4/L5	V
	33	M	L5/S1	V

F, female; M, male.