The TYLOS ankle arthrodesis nail, from the Be POD range, has: a unique posterior locking system, thanks to the insertion of a transcalcaneal screw of the threaded key type, guaranteeing considerable stability and thus reducing the risks of system disassembling or retrograde screw, a lateral locking system assisted by cortical screws. Indications The TYLOS ankle arthrodesis nail is used for : combined talocrural and subtalar arthrodeses, as well as for certain types of distal pseudoarthroses of the tibia when the ankle joint cannot be preserved.