A syringe assembly comprising: a syringe barrel having a first end , a second end , and a sidewall extending between the first end and the second end, the sidewall defining a chamber ; a stopper disposed within the chamber of the syringe barrel ; a plunger rod having first and second ends , the first end of the plunger rod pivotally secured to a plunger adapter , the plunger rod having a pre-use position wherein the second end of the plunger rod is positioned adjacent to the syringe barrel , and a use positon wherein the plunger rod is configured to displace the stopper relative to the syringe barrel , wherein the plunger adapter has a first end , a second end , and an intermediate portion therebetween, the first end of the plunger adapter configured to engage the stopper , the second end of the plunger adapter having a plunger interface portion defining a recessed portion , wherein the recessed portion has a first area configured to receive an extension of the plunger rod and a second area configured to receive a T-shaped cross-section of an elongate body of the plunger rod , wherein, the plunger rod and the recessed portion include multiple surfaces of engagement positioned substantially perpendicular with respect to each other to form a T-shaped cross-section thereby stabilizing the plunger rod with respect to the plunger adapter in the use position against the application of torque to the plunger rod , characterized in that the recessed portion of the plunger adapter : receives a portion of the first end of the plunger rod when the plunger rod is in the pre-use position to stabilize the plunger rod during pivoting movement to the use position as the result of the positioning of the extension of the plunger rod within the first area. a syringe barrel having a first end , a second end , and a sidewall extending between the first end and the second end, the sidewall defining a chamber ; a stopper disposed within the chamber of the syringe barrel ; a plunger rod having first and second ends , the first end of the plunger rod pivotally secured to a plunger adapter , the plunger rod having a pre-use position wherein the second end of the plunger rod is positioned adjacent to the syringe barrel , and a use positon wherein the plunger rod is configured to displace the stopper relative to the syringe barrel , wherein the plunger adapter has a first end , a second end , and an intermediate portion therebetween, the first end of the plunger adapter configured to engage the stopper , the second end of the plunger adapter having a plunger interface portion defining a recessed portion , wherein the recessed portion has a first area configured to receive an extension of the plunger rod and a second area configured to receive a T-shaped cross-section of an elongate body of the plunger rod , wherein, the plunger rod and the recessed portion include multiple surfaces of engagement positioned substantially perpendicular with respect to each other to form a T-shaped cross-section thereby stabilizing the plunger rod with respect to the plunger adapter in the use position against the application of torque to the plunger rod , characterized in that the recessed portion of the plunger adapter : receives a portion of the first end of the plunger rod when the plunger rod is in the pre-use position to stabilize the plunger rod during pivoting movement to the use position as the result of the positioning of the extension of the plunger rod within the first area. <EOS>