How Reproductive Organ Problems Affect Fertility

Yes, structural problems in the reproductive organs are a recognised cause of infertility, and they are among the more identifiable ones because imaging can find them. Blocked fallopian tubes prevent egg and sperm meeting. Problems with the ovaries affect egg supply. Problems with the uterus affect implantation. What matters practically is that different structures point to different treatments, which is why the assessment identifies which is involved before anything is recommended.

Ovaries

The ovaries hold and release the eggs, so their function determines both egg supply and, largely through age, egg quality. Ovarian reserve declines throughout life and more noticeably from the mid to late thirties. Where it declines early, that is premature ovarian insufficiency.

Ovarian conditions also include PCOS, which disrupts ovulation, and endometriomas from endometriosis, which can affect reserve. Ovarian reserve is assessed with AMH and an ultrasound follicle count.

Fallopian tubes

The tubes carry the egg and are where fertilization normally happens, so blockage or damage prevents conception directly. Causes include previous infection, endometriosis, previous surgery and sterilization.

The treatment implication is specific. If one tube is open, IUI or natural conception may still be possible. If both are blocked, IVF is the route, because it bypasses the tubes entirely.

One point often blurred: blocked tubes indicate IVF, not ICSI specifically. ICSI addresses a sperm problem. Unless a semen analysis shows one, conventional IVF is the indicated treatment.

Uterus

The uterus is where an embryo implants and a pregnancy grows. Relevant findings include fibroids, particularly those distorting the cavity, polyps, adhesions or scarring from previous surgery or infection, congenital differences in the shape of the uterus, and adenomyosis.

Not every finding needs treating. A fibroid distorting the cavity is a different matter from one sitting harmlessly in the wall, which is why what is found is interpreted rather than simply listed. The uterine lining is assessed separately before an embryo transfer.

Cervix and vagina

Less commonly a primary cause. Cervical problems can impede sperm entering the uterus, which IUI can bypass. Structural narrowing of the vagina, whether present from birth or following surgery or radiotherapy, can make intercourse difficult and so prevent conception indirectly rather than through any effect on fertility itself. Infection should be treated on its own merits whether or not you are trying to conceive.

How are these found?

• Pelvic ultrasound, which shows the ovaries and uterus and can identify fibroids, polyps and endometriomas.
• Tubal imaging, to check whether the fallopian tubes are open.
• Hysteroscopy, examining the uterine cavity directly.
• Laparoscopy, which can both diagnose and treat endometriosis and adhesions.

Our article on what happens at a first fertility appointment covers where these fit.

Note that a structural finding in one partner does not mean the assessment stops there. Male factors are common and frequently coexist, so a semen analysis belongs in the workup regardless.

We at Millennium IVF Clinic assess both partners. You can arrange a consultation with our team.

Frequently asked questions

Can I conceive with one blocked tube?

It is possible if the other is open and functioning. Your specialist will advise based on the imaging and on what else is found.

Do fibroids always need removing?

No. It depends on their size and position, particularly whether they distort the cavity. Many fibroids do not require treatment for fertility.

Can blocked tubes be repaired?

Sometimes surgically, depending on the cause and extent of damage. IVF bypasses the problem instead. Which is appropriate depends on your age and circumstances.

Does a structural problem mean IVF is my only option?

No. It depends what and where. Some findings are treatable, some are bypassed by IUI, and some make IVF the sensible route.