A surgical instrument comprising: a sleeve extending along a longitudinal axis between opposite proximal and distal ends (110, 112), an inner surface of the sleeve defining a passageway, the distal end defining an engagement portion, the engagement portion comprising an engagement surface extending from a first end to an opposite second end, the engagement portion comprising a peg extending outwardly from the first end, the engagement portion comprising an opening extending through the second end, the opening being in communication with the passageway; a knob coupled to the proximal end of the sleeve; and a shaft comprising a proximal end and an opposite distal end, the distal end of the shaft comprising a mating portion, the mating portion extending through the opening, the proximal end of the shaft being coupled to the knob, the knob being rotatable relative to the sleeve to rotate the shaft relative to the sleeve, wherein: the surgical instrument includes a first member positioned between the sleeve and the knob, the first member being fixed relative to the sleeve, the first member including a plurality of first openings; the knob comprises a second member including a plurality of second openings and a third member comprising a plurality of extensions that are aligned with the second openings, the shaft being fixed to the second member; and the knob is rotatable between a first configuration in which the extensions are spaced apart from the first openings and a second configuration in which the extensions are disposed in the first openings, the knob being rotatable relative to the sleeve when the knob is in the first configuration, the knob resisting rotation relative to the sleeve when the knob is in the second configuration. a sleeve extending along a longitudinal axis between opposite proximal and distal ends (110, 112), an inner surface of the sleeve defining a passageway, the distal end defining an engagement portion, the engagement portion comprising an engagement surface extending from a first end to an opposite second end, the engagement portion comprising a peg extending outwardly from the first end, the engagement portion comprising an opening extending through the second end, the opening being in communication with the passageway; a knob coupled to the proximal end of the sleeve; and a shaft comprising a proximal end and an opposite distal end, the distal end of the shaft comprising a mating portion, the mating portion extending through the opening, the proximal end of the shaft being coupled to the knob, the knob being rotatable relative to the sleeve to rotate the shaft relative to the sleeve, wherein: the surgical instrument includes a first member positioned between the sleeve and the knob, the first member being fixed relative to the sleeve, the first member including a plurality of first openings; the knob comprises a second member including a plurality of second openings and a third member comprising a plurality of extensions that are aligned with the second openings, the shaft being fixed to the second member; and the knob is rotatable between a first configuration in which the extensions are spaced apart from the first openings and a second configuration in which the extensions are disposed in the first openings, the knob being rotatable relative to the sleeve when the knob is in the first configuration, the knob resisting rotation relative to the sleeve when the knob is in the second configuration. the surgical instrument includes a first member positioned between the sleeve and the knob, the first member being fixed relative to the sleeve, the first member including a plurality of first openings; the knob comprises a second member including a plurality of second openings and a third member comprising a plurality of extensions that are aligned with the second openings, the shaft being fixed to the second member; and the knob is rotatable between a first configuration in which the extensions are spaced apart from the first openings and a second configuration in which the extensions are disposed in the first openings, the knob being rotatable relative to the sleeve when the knob is in the first configuration, the knob resisting rotation relative to the sleeve when the knob is in the second configuration.