They could not then rush against the Pandavas as if their thighs were locked and seized in a vice. When that unslayable son of Shantanu. viz., Bhishma endued with great prowess was overthrown,
ऊरुग्राहगृहीताश्च नाभ्यधावन्त पाण्डवान्॥ अवध्ये शन्तनोः पुत्रे हते भीष्मे महौजसि।