of a rotation handle or flex arm connector as shown in fig5 to disconnect the ratcheting connector 50 from the head holders 1 the sagittal plane adjustment knobs 59 a and 59 b are unlocked and the transverse plane locking plate 63 is also unlocked once all adjustments have been loosened the ratcheting connector 50 slips off over the proximal end of each head holder 1 referring now to fig4 a perspective view of the flex arm connector 80 is shown flex arm connector 80 provides a means of connecting a series of ratcheting connectors 50 located on consecutive vertebral bodies the flex arm connector 80 can account for variability in rotation in consecutive vertebral bodies and effectively distributes rotational forces over multiple vertebral bodies rather than focusing the load on a single vertebral body various embodiments of the flex arm connector 80 further permits one or more of the following benefits sagittal plane adjustment for off axis location of pedicle screws on consecutive vertebral bodies transverse coronal plane adjustment for variance in rotation between consecutive vertebral bodies simple tightening and locking mechanism for each plane of adjustment and centralized receptacle for optional utilization of a rotation handle referring to fig5 a perspective view of a portion of a flex arm connector 80 is shown in preferred embodiments the flex arm connector is made of a plurality of nesting cups 81 each cup includes a male portion 83 and a female portion 85 with the male portion of one nesting cup fitting rotatably within the female portion of a proximate.