Certain tests are performed to evaluate morphology, which refers to the structural assessment of sperm parameters. The Kruger criteria is the most frequently used method for evaluating sperm morphology. However, the Kruger assessment is a system that considers sperm to be abnormal even when there is a very minor structural issue. Consequently, the evaluation is very strict, and the results can yield very low percentages. For example, a man with a morphology value of 1% according to Kruger criteria can still be fertile.
Low morphology alone does not directly constitute an obstacle to achieving pregnancy. Therefore, in cases where the Kruger value is low, unless the embryologist indicates a severe morphological problem, isolated morphological abnormality should not be a cause for concern. Having a morphology value of 0% or 1% does not necessitate proceeding directly to In Vitro Fertilization (IVF) treatment; other parameters, namely sperm count and motility, must be evaluated together. Furthermore, low morphology does not lead to the birth of an abnormal baby.
