Abstract: An implant of H shape for use in bone surgery, specifically in re-attaching the greater trochanter after osteotomy. The cross-bar (28) of the H forms a bridge and has two longitudinal holes (24) in it for receiving a tying cable (22). At each end of each limb (32, 36) of the H there is a tooth (34, 38) which is either impaled in, or fits around, the trochanter or other bone. The limbs can be straight in the region of the bridge or can be markedly curved. The teeth all lie on the same side of the structure constituted by the limbs and bridge, and, where the limbs are curved, lie on the inside of the curve.