An endobutton is a fixation device to secure the upper end of a hamstrings graft during the procedure of cruciate ligament reconstruction.

endobutton fixation

The endobutton at the top is an example of 'suspensory' cortical fixation, where the device is on the outside of the bone and suspends the ligament, which would be fixed at the lower end with perhaps an interference screw.

endobutton

 

The endobutton can be manipulated by the 'strings' so that it can be turned longways to pull it through the tunnel, and then flipped sideways so that it cannot fall back into the tunnel once it is tensioned.

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