PROBLEM TO BE SOLVED: To provide a spacer for choles fracture, which is suitable for curing choles fracture of the aged and reduce influence on the peripheral muscles by forming the spacer like a block gradually increased in width from the insert side forward end to the rear part, and providing a notch locked on a bone piece of the fracture part on the near or remote outer surface end part of the surface. SOLUTION: This spacer 20 for choles fracture is formed by a pair of side surfaces 21 parallel to each other, front and rear end faces 22, 23, an insert forward end face 24, and an outer surface 25. The front end face 22 and the rear end face 23 are formed like a solid block in such a manner as to be gradually increased in width from the insert forward end face 24 to the outer surface 25 side. The front end face 23 is taken as the fingers side (remote side) end face, and the rear end face 23 is taken as the shoulder side (near side) end face. The outer surface 25 is formed by an outer projected curved surface, and a staircase-like notch 6 is formed on the rear end face 23 side. The notch 26 may be done so on the front end face 22. The notch 26 is locked on one bone piece of the fracture part, and the upper side of the front end face 22 is brought into the other bone piece of the fracture part to be fixed. Thus, slippage can be prevented to obtain stability.
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