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.
A hammertoe is a deformity or contracture of one or both of the joints in the second, third, fourth or fifth toe. The deformity results in a permanent bend in the toe causing it to look like a hammer. Advanced hammertoes can cause pain and pressure which make everyday activities, including walking, difficult.