Subtalar screws with double expansion capabilities can expand the distal portion to 4 mm in diameter, thereby correcting and maintaining the plantar arch. This type of screw expands in both the distal and proximal portions, resulting in the formation of an hourglass with a stable anchor in the senus tarsus. The internal screw is made of Titanium, while the primary body is composed of PE-UHMWPE.
Subtalar screw with double expansion, Ø9×18 mm


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