A bone anchoring element (1101201301) is provided which has a shaft for anchoring in a bone (20325340). At least one barb element (12112) is connected to the shaft (2202302), the barb element (12112) having a free end (14114) and a base (13) connecting the barb element (12112) to the shaft (2202302). The barb element has a first portion (15) adjacent to the base (13) and a second portion (16116) adjacent to the free end (14114). The second portion is inclined relative to the first portion in a direction off said shaft (2202302).(Fig. 1)本案提供一種骨骼固定元件(1;101;201;301),具有主軸,以供固定於骨骼(20;325;340)內。至少一倒鉤元件(12;112)連接於主軸(2;202;302),倒鉤元件(12;112)有自由端(14;114)和基部(13),把倒鉤元件(12;112)連接於主軸(2;202;302)。倒鉤元件有鄰接基部(13)之第一部份(15),和鄰接自由端(14;114)之第二部份(16;116)。第二部份相對於第一部份,按離開該主軸(2;202;302)之方向傾斜。1...骨骼固定元件2...主軸3...尖端4...頭端5...凹部6...第一圓筒部7...第二圓筒部8...圓筒軸組件9...U形凹部10...管體10a...長方形切口11...凸部12...倒鉤元件13...切口基部14...倒鉤自由端18...尖端基部B...彎曲線Dt...尖端基部外徑M...主軸軸線U...沿周線α...傾斜角度
