A strike instrument configured to couple to an insertion handle of an intramedullary nail , the strike instrument comprising: a proximal end , and a distal end that is opposite the proximal end along a distal direction (D); a shaft that extends between the proximal end and the distal end along a shaft axis (As); and a strike surface that is translatably fixed to the shaft and configured to receive an impaction force from an impaction tool so as to transfer the impaction force from the strike instrument to the insertion handle when the strike instrument is coupled to the insertion handle ; the strike instrument being characterized by : an abutment that extends outward relative to the shaft along a first direction (D 1 ) such that the abutment defines a length ( l ) in the first direction (D 1 ) that is greater than a cross-sectional dimension of the shaft in the first direction (D 1 ), the abutment being rotationally fixed to the shaft such that the shaft is configured to rotate the abutment between a first rotational orientation, wherein the abutment can be removed or inserted into the insertion handle , and a second rotational orientation, wherein the abutment is configured to form an interference with the insertion handle that prevents the abutment from being removed from the insertion handle ; and a lock configured such that, when the abutment is received in the insertion handle and rotated relative to the insertion handle from the first rotational orientation to the second rotational orientation, the lock engages the insertion handle so as to prevent the abutment from rotating from the second rotational orientation to the first rotational orientation. a proximal end , and a distal end that is opposite the proximal end along a distal direction (D); a shaft that extends between the proximal end and the distal end along a shaft axis (As); and a strike surface that is translatably fixed to the shaft and configured to receive an impaction force from an impaction tool so as to transfer the impaction force from the strike instrument to the insertion handle when the strike instrument is coupled to the insertion handle ; an abutment that extends outward relative to the shaft along a first direction (D 1 ) such that the abutment defines a length ( l ) in the first direction (D 1 ) that is greater than a cross-sectional dimension of the shaft in the first direction (D 1 ), the abutment being rotationally fixed to the shaft such that the shaft is configured to rotate the abutment between a first rotational orientation, wherein the abutment can be removed or inserted into the insertion handle , and a second rotational orientation, wherein the abutment is configured to form an interference with the insertion handle that prevents the abutment from being removed from the insertion handle ; and a lock configured such that, when the abutment is received in the insertion handle and rotated relative to the insertion handle from the first rotational orientation to the second rotational orientation, the lock engages the insertion handle so as to prevent the abutment from rotating from the second rotational orientation to the first rotational orientation. <EOS>