Canine Castration Open Prescrotal Castration Closed Prescrotal Castration Prescrotal Castration Skin incision ---- Subcutaneous tissue incision along the median raphe ---- Continue to incise the fascia and parietal vaginal tunics - in Open Prescrotal Castration The parietal vaginal tunic was intact in Closed Prescrotal Castration . Tunica albuginea was intact in both open and closed prescrotal castration. Note: The risk of ligature slippage and loosening may be slightly greater in closed techniques compared to open techniques . Removal of parietal vagina...