Toksvig-Larsen Sören, W-Dahl Annette
Department of Orthopedics, Lund University Hospital, Lund, Sweden.
Acta Orthop. 2008 Feb;79(1):48-52. doi: 10.1080/17453670710014752.
Tibial osteotomy by the hemicallotasis technique (HCO) requires strong pin fixation. We compared pin fixation in HCO using a new self-drilling XCaliber pin (Orthofix) with optimized thread and tip design, with the commonly used standard pin (Orthofix).
50 patients, mean age 51 (35-66) years, to be treated by HCO were randomized to standard pins or XCaliber pins. In the metaphyseal bone, hydroxyapatite-coated (HA-coated) pins were used in both types of pins. In the diaphyseal bone, non-coated pins were used. The torque forces for insertion and extraction (in Nm) were measured.
The insertion torque was higher for both the proximal and distal standard pins (2.1 Nm (SD 0.9) and 7.0 Nm (1.3), respectively) than for the XCaliber pins (1.3 Nm (0.8) and 3.6 Nm (1.4)). The extraction torque force was higher for the proximal standard pins (4.3 Nm (3.1)) than for the proximal XCaliber pins (1.5 Nm (1.7)) (p < 0.001). The extraction torque for the distal standard pins was 1.9 Nm (2.0) and for the distal XCaliber pins it was 1.4 Nm (1.1).
The commonly used standard pin gives stronger fixation during the treatment of HCO.
半骺延长技术（HCO）进行胫骨截骨术需要牢固的钢针固定。我们比较了在HCO中使用一种新型自钻式XCaliber钢针（奥索公司）与常用标准钢针（奥索公司）的钢针固定情况，新型钢针具有优化的螺纹和尖端设计。
50例平均年龄51岁（35 - 66岁）拟接受HCO治疗的患者被随机分为使用标准钢针组或XCaliber钢针组。在干骺端骨，两种钢针均使用羟基磷灰石涂层（HA涂层）钢针。在骨干骨，使用未涂层钢针。测量了插入和拔出时的扭矩力（单位为牛米）。
近端和远端标准钢针的插入扭矩（分别为2.1牛米（标准差0.9）和7.0牛米（1.3））均高于XCaliber钢针（分别为1.3牛米（0.8）和3.6牛米（1.4））。近端标准钢针的拔出扭矩力（4.3牛米（3.1））高于近端XCaliber钢针（1.5牛米（1.7））（p < 0.001）。远端标准钢针的拔出扭矩为1.9牛米（2.0），远端XCaliber钢针为1.4牛米（1.1）。
在HCO治疗中，常用的标准钢针能提供更强的固定。
