Increased Fertilization Rates after In Vitro Culture of Frozen-Thawed Testicular Immotile Sperm in Nonobstructive Azoospermic Patients

Table 2

Motility results with frozen-thawed spermatozoa on the moment of ICSI in both groups (Group I, when spermatozoa reached some kind of motility and Group II, after culture, with the peaked). Values are mean ± SD.

Time of in vitro culture	Percentage^a of spermatozoa that were motile
	Group 1	Group 2
1	2 ± 2	3.3 ± 3
2	8.2 ± 2.5^a	4 ± 5
4	—	11.8 ± 4
6	—	18.6 ± 3.6^a
8	—	15 ± 18
12	—	10 ± 5
24	—	5 ± 10

^a𝑃<0.01.