A disassembly tool for use in joint arthroplasty for disassembly of a first component of a prosthesis and a second component of the prosthesis in which the first component which comprises a proximal body which having a bore formed in it with a tapered wall, and the second component which comprises a distal stem which has an external taper on it which can be received in the bore in the proximal body and engage the tapered wall thereof to connect the first component to the second component, the tool comprising: a first member comprising: (i) a housing whose distal portion is provided with a radially expandable collet which has a cylindrical or tapered inner wall, (ii) a collar mounted on the exterior of the housing, (iii) a sleeve mounted inside the housing and connected to the collar, the first member having a bore extending through it from one end to its opposite other end, a second member which extends through the bore in the first member, with a distal portion protruding from one end of the first member which is adapted to fit within a recess of the second component, the second member having a second member longitudinal axis, and a drive mechanism coupled to the second member at the proximal end of the second member, in which the connection between the collar and the sleeve causes the sleeve to move with the collar relative to the housing along the second member longitudinal axis, movement of the collar and the sleeve in a distal direction causing the distal end of the sleeve to be inserted into the collet so that the collet expands radially and exerts a radial force against the first component, and movement of the collar and the sleeve in a proximal direction causing the sleeve to disengage from within the collet to allow the collet to return to its original size, and in which activation of the drive mechanism causes the second member to exert a force against the second component in the direction of the longitudinal axis, in which such exertion of force against the second member further causes the second member to move relative to the first member along the second member longitudinal axis. a first member comprising: (i) a housing whose distal portion is provided with a radially expandable collet which has a cylindrical or tapered inner wall, (ii) a collar mounted on the exterior of the housing, (iii) a sleeve mounted inside the housing and connected to the collar, (i) a housing whose distal portion is provided with a radially expandable collet which has a cylindrical or tapered inner wall, (ii) a collar mounted on the exterior of the housing, (iii) a sleeve mounted inside the housing and connected to the collar, the first member having a bore extending through it from one end to its opposite other end, a second member which extends through the bore in the first member, with a distal portion protruding from one end of the first member which is adapted to fit within a recess of the second component, the second member having a second member longitudinal axis, and a drive mechanism coupled to the second member at the proximal end of the second member, in which the connection between the collar and the sleeve causes the sleeve to move with the collar relative to the housing along the second member longitudinal axis, movement of the collar and the sleeve in a distal direction causing the distal end of the sleeve to be inserted into the collet so that the collet expands radially and exerts a radial force against the first component, and movement of the collar and the sleeve in a proximal direction causing the sleeve to disengage from within the collet to allow the collet to return to its original size, and in which activation of the drive mechanism causes the second member to exert a force against the second component in the direction of the longitudinal axis, in which such exertion of force against the second member further causes the second member to move relative to the first member along the second member longitudinal axis.