Development Status of The Hindlimb Extremity Bones of The Watchdog Hybrid Fetus (40 Days Old)

Hindlimb extremity bones of 40-day-old watchdog hybrid fetuses were examined. Knowing the normal formation of the extremities is important for understanding possible disorders and their treatment. The developmental processes of the movement system do not occur as sequentially as expected. Alizarin red and alcian according to Inouye technique bones of 40-day-old animals were stained with alcian blue. Dissections of bones preserved in appropriate solutions were performed. Stereomicroscopic and normal photographs were taken with a digital camera. Measurements were taken from the dissected legs with a 150 mm Mitutoyo brand caliper. Hindlimb bones of 40-day-old guard dog hybrid fetuses were observed to have primary ossification centers, while some bones had no ossification centers. A primary ossification center was observed in the corpus of the femur, tibia, fibula, and metatarsus bones of the hind limb, while no ossification center was observed in the proximal and distal ends. Also, patella, ossa tarsi, and ossa digitorum pedis no ossification centers were observed.