+31 (0)71 58 12 300

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If you have any questions, let us know!

Opening times (by phone)
For questions and to schedule appointments you can reach us from mo-fri 8.00-12.00 and 13.00-15.30 and on saturday 10.00-13.00. On sunday 10.00-13.00 (only for treatments)

Opening hours (appointments)
Mon 7.30-17.00
Tue 7.30-20.30
Wed 7.30-17.00
Thu 7.30-17.00
Fri 7.30-17.00
Sat 8.30-15.00
Sun 8.30-15.00

Schedule an appointment:
☎ +31 (0)71 58 12 300

For emergencies:
☎ +31 (0) 6 25257420

✉ info[at]mckinderwens.nl

Basis and examinations

Basis for reproduction

The reasons behind someone being unable to reproduce are just as common in both men and women. However, even if only the male partner has reproductive issues, the female partner will usually be treated as well to increase the odds of success.

Getting pregnant

Ovulation: During ovulation, the mature follicle will open, releasing a fertile egg cell, which will move through the fallopian tube and into the uterus. This egg cell will be viable for 24 hours.

Fertilization: A sperm cell penetrates the egg cell’s outer layer, merging the male and female cells. This is possible from two days before ovulation is due until the day it happens.

Implantation: When an embryo embeds itself in the womb, that’s called implantation. First the corpus luteum will produce a hormone known as progesterone, then the placenta will start to produce it too. Progesterone plays a vital part in sustaining the pregnancy.

Reasons for not becoming pregnant

Roughly 30% of the couples who fail to get pregnant experience this due to fertility issues in the male partner, and roughly 30% experience this due to fertility issues in the female partner. Several factors are associated with reduced fertility in men and/or women.


Endometriosis is a benign, chronic disorder. It affects seven to fifteen percent of all women of reproductive age. This disorder causes endometrial cells to attach to organs outside the uterus. Most commonly affected are the fallopian tubes, ovaries, and surrounding tissues. Resulting adhesions or scarring can cause difficulties in sperm transportation or the implantation of a fertilized embryo. Endometriosis is one of the leading causes of infertility, and our physicians can offer you extensive advice regarding this topic, as well as information on its treatments.