An implant (76; 142; 152) for a minimally invasive bone stabilization system for preventing relative motion between an ilium and a sacrum, said implant comprising: an elongate trunk (90; 144; 154) comprising a proximal end configured to be positioned within the ilium, a distal end configured to be positioned within the sacrum such that said elongate trunk extends between the ilium and the sacrum, a bore extending through said elongate trunk (90; 144; 154), a longitudinal axis defined between said proximal and distal ends (302, 304), and a periphery defined by an outer surface of said elongate trunk (90; 144; 154); a proximal anchor located proximally to said proximal end of said trunk (90; 144; 154), said proximal anchor comprising at least one deformable feature adapted to deform in response to a compressive load to move said proximal anchor between an initial configuration in which said deformable feature is within said periphery of said elongate trunk (90; 144; 154), and a deployed configuration in which at least a portion of said deformable feature extends outwardly beyond said periphery of said elongate trunk relative to said longitudinal axis to engage the ilium; and a distal anchor coupled to said elongate trunk (90; 144; 154) and located distally to said distal end of said trunk (90; 144; 154) and comprising an expandable member defining an interior in fluid communication with said bore of said elongate trunk (90; 144; 154) such that said distal anchor is configured to be deployed by said expandable member receiving injectable material through said bore with said proximal anchor in said deployed configuration to move between a collapsed state in which said expandable member is within said periphery of said elongate trunk (90; 144; 154), and an expanded state in which at least a portion of said expandable member extends outwardly beyond said periphery of said elongate trunk (90; 144; 154) relative to said longitudinal axis to engage the sacrum. an elongate trunk (90; 144; 154) comprising a proximal end configured to be positioned within the ilium, a distal end configured to be positioned within the sacrum such that said elongate trunk extends between the ilium and the sacrum, a bore extending through said elongate trunk (90; 144; 154), a longitudinal axis defined between said proximal and distal ends (302, 304), and a periphery defined by an outer surface of said elongate trunk (90; 144; 154); a proximal anchor located proximally to said proximal end of said trunk (90; 144; 154), said proximal anchor comprising at least one deformable feature adapted to deform in response to a compressive load to move said proximal anchor between an initial configuration in which said deformable feature is within said periphery of said elongate trunk (90; 144; 154), and a deployed configuration in which at least a portion of said deformable feature extends outwardly beyond said periphery of said elongate trunk relative to said longitudinal axis to engage the ilium; and a distal anchor coupled to said elongate trunk (90; 144; 154) and located distally to said distal end of said trunk (90; 144; 154) and comprising an expandable member defining an interior in fluid communication with said bore of said elongate trunk (90; 144; 154) such that said distal anchor is configured to be deployed by said expandable member receiving injectable material through said bore with said proximal anchor in said deployed configuration to move between a collapsed state in which said expandable member is within said periphery of said elongate trunk (90; 144; 154), and an expanded state in which at least a portion of said expandable member extends outwardly beyond said periphery of said elongate trunk (90; 144; 154) relative to said longitudinal axis to engage the sacrum.