<prompt> Bennets Fracture involvesBase of Ist metacarpalNeck of Ist metacarpalBase of Vth metacarpalNeck of Vth metacarpal  <response>: Fracture of the base of the first metacarpal is called Bennett;s fracture.It involves the anterior pa of the base, and is caused by a force along its long axis. The thumb is forced into a semiflexed position and cannot be opposed. The fist cannot be clenchedReference: Vishram Singh Anatomy; 2nd edition; Page no: 32 