Investigation of the morphometry and variations of the biceps brachii muscle in fetal cadavers

This study aimed to examine the morphometry of the biceps brachii muscle in fetal cadavers, to reveal the difference between genders and sides, and to determine the variations. Our study was conducted on 47 upper extremities of 25 human fetuses (13 females, 12 males) who were aged between 29-40 weeks of gestation and had no external pathology and anomaly. The development of the determined parameters according to gestational age (month) was evaluated. Comparisons were made between genders and sides. In our study, no statistically significant difference was found in the footprint length of the biceps brachii muscle according to gestational age. Other parameters increased statistically significantly according to gestational age. No difference was found between genders in morphometric parameters. There was no statistically significant difference between the right and left extremities in other parameters, except for motor entry point. Motor entry point was found to be statistically significantly more distal in the left extremities compared to the right extremities (p=0.012). Furthermore, all parameters were positively correlated with gestational age. We considered that they would contribute to the correct diagnosis and treatment of pathologies related to this region especially in the intrauterine period, premature birth and in the newborn, as well as to the reduction of complications that may occur after treatment.