A system for configuring or selecting one or more implants and for implanting the implants proximate a bone in the body of a patient, the system comprising: a first cannula having a distal end configured to be positioned proximate a first anatomic point proximate a bone within the body, through which the one or more implants are to pass, the first cannula having a proximal end and a central axis, and having a first slot and a second slot in the side wall thereof; a second cannula having a distal end configured to be positioned proximate a second anatomic point proximate a bone within the body, through which the one or more implants are to pass, the second cannula having a proximal end and a central axis, and having a first slot and a second slot in the side wall thereof; a first simulation member (180, 380) attached to the proximal end of the first cannula or passing through the first cannula; a second simulation member (180, 380) attached to the proximal end of the second cannula or passing through the second cannula; and a first bridge configured to constrain an orientation of the first simulation member (180, 380) with respect to the second simulation member (180, 380) to provide a spatial transformation of the first and second anatomic points (164, 166) to first and second projected points (214, 216) outside the body; wherein the first and second simulation members (180, 380) are configured to receive the one or more implants to facilitate configuration or selection of the one or more implants based on locations of the first and second projected points (214, 216); and wherein the second slot of the first cannula is arranged with respect to the first slot of the first cannula to permit passage of said one or more configured or selected implants through the slots of the first cannula along a direction transverse to the central axis of the first cannula; wherein the first cannula comprises: a first blade; and a second blade discrete from the first blade; wherein the first and second blades are positionable substantially parallel to each other to provide the first cannula. a first cannula having a distal end configured to be positioned proximate a first anatomic point proximate a bone within the body, through which the one or more implants are to pass, the first cannula having a proximal end and a central axis, and having a first slot and a second slot in the side wall thereof; a second cannula having a distal end configured to be positioned proximate a second anatomic point proximate a bone within the body, through which the one or more implants are to pass, the second cannula having a proximal end and a central axis, and having a first slot and a second slot in the side wall thereof; a first simulation member (180, 380) attached to the proximal end of the first cannula or passing through the first cannula; a second simulation member (180, 380) attached to the proximal end of the second cannula or passing through the second cannula; and a first bridge configured to constrain an orientation of the first simulation member (180, 380) with respect to the second simulation member (180, 380) to provide a spatial transformation of the first and second anatomic points (164, 166) to first and second projected points (214, 216) outside the body; wherein the first and second simulation members (180, 380) are configured to receive the one or more implants to facilitate configuration or selection of the one or more implants based on locations of the first and second projected points (214, 216); and wherein the second slot of the first cannula is arranged with respect to the first slot of the first cannula to permit passage of said one or more configured or selected implants through the slots of the first cannula along a direction transverse to the central axis of the first cannula; wherein the first cannula comprises: a first blade; and a second blade discrete from the first blade; a first blade; and a second blade discrete from the first blade; wherein the first and second blades are positionable substantially parallel to each other to provide the first cannula.