An arrangement for bone support. The arrangement comprises a support device comprising a device body having a bottom surface (3). The arrangement further comprises a filling agent (2) possessing ability to convert from a flowable state into a non-flowable state, said filling agent (2) being provided in said flowable state under said bottom surface (3) of the support device. The filling agent (2) is arranged to convert from said flowable state into said non-flowable state in contact with the bottom surface (3) of the support device.
