sperm morphology
The assessment of sperm shape and structure, a key parameter in male fertility evaluation and treatment planning.
Full Definition
Sperm morphology refers to the detailed microscopic analysis of sperm cell shape and structural characteristics as part of comprehensive semen analysis. This evaluation examines the head, neck, midpiece, and tail of individual sperm cells to determine the percentage that have normal morphological features according to strict criteria established by the World Health Organization. Normal morphology is associated with improved fertilization rates and pregnancy outcomes in both natural conception and assisted reproductive technologies. Poor sperm morphology (teratozoospermia) may indicate underlying male fertility issues and can influence treatment recommendations, with severely abnormal morphology often indicating the need for intracytoplasmic sperm injection rather than conventional IVF to achieve fertilization.
Usage
Usage note: Distinguish from motility and concentration; specify criteria used (strict vs. WHO standards).
In Context
- "Strict morphology assessment revealed only 2% normal forms, indicating severe teratozoospermia." — Semen analysis report
- "Poor sperm morphology results supported the recommendation for ICSI treatment." — Treatment consultation