Background Cardiac implantable electric devices are commonly used to treat heart failure. Little is known about temporal and geographic variation in use of cardiac resynchronization therapy (CRT) devices in usual care settings.
A hammer drill, also known as a rotary hammer, roto-drill or hammering drill, (see also rotary drill) is a rotary drill with a hammering action. The hammering action provides a short, rapid hammer thrust to pulverize relatively brittle material and provide quicker drilling with less effort.
What is a hammertoe? A hammertoe is a deformity of the second, third or fourth toe. In this condition, the toe is bent at the middle joint, so that it resembles a hammer. Initially, hammertoes are flexible and can be corrected with simple measures but if left untreated, they can become fixed and require surgery.