A decreased motility of sperm is known as asthenozoospermia. In natural conception, the sperm must be able to swim, propelling themselves in either straight lines or large circles through the female reproductive system.
The World Health Organization (WHO) guidelines for semen analysis include an evaluation of motility in addition to concentration and morphology (shape). Diagnostic work is never performed on a single individual number, but rather the overall semen profile is considered in relation to complete reproductive health.
Identifying the underlying origin of poor motility is the first step toward effective care. Recognized asthenozoospermia causes include:
Accurate evaluation ensures that low sperm motility treatment is tailored correctly:
Treatment is never one-size-fits-all; management depends directly on the root cause, severity, and both partners’ overall reproductive profiles.
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When natural conception remains difficult, assisted reproduction provides effective alternatives.
| Treatment | When It May Be Considered | Key Clinical Point |
| IUI | Mild to moderate motility issues with sufficient motile sperm post-wash | Less invasive; places concentrated, washed sperm directly into the uterus. |
| IVF | Moderate male factor, unexplained failure with IUI, or co-existing female factors | Provides a controlled laboratory environment for fertilisation. |
| IVF with ICSI | Severe motility deficits or previous fertilisation failure | A single, viable sperm is selected and injected directly into the egg. |
Selecting between asthenozoospermia IUI and poor sperm motility IVF (with or without ICSI) depends entirely on post-wash sperm counts and your broader reproductive evaluation.
Yes. While not every underlying cause can be reversed, modern reproductive medicine offers viable pathways to parenthood. Reversible factors like infections or lifestyle elements may improve natural motility, while assisted techniques like ICSI bypass movement limitations entirely by directly assisting fertilisation.
