The extendible bone prosthesis 5, in which {HEAD ~ said bio compatible liquid} is selected from {TAIL ~ the group} consisting of saline solution and cerebrospinal fluid 
is selected from
The extendible bone prosthesis 5 , in which { HEAD ~ said bio compatible liquid } is selected from { TAIL ~ the group } consisting of saline solution and cerebrospinal fluid
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH