C臂X线机辅助下自制导向针测量前倾角在股骨颈内固定术中的应用

Measuring femoral anteversion angle by home-made guide pin in internal fixation of femoral neck under C-arm

目的探讨一种股骨颈及转子间骨折内固定术前前倾角测量方法,藉此测量的度数作为术中前倾角的定向依据,进而提高导针穿刺精确度。方法将骨科牵引床、骨盆及患肢、自制导向针合为一体,处于水平位的自制导向针相当于一人为水平坐标,经C臂X线机行侧位透视了解复位情况的同时,测量股骨头颈中心轴与导向针的夹角,其大小即为前倾角的度数。临床应用于46例患者。结果 46例患者测得前倾角的度数为0~30°,一次置针前倾角41例满意,3例偏向前方,2例偏向后方。结论 C臂X线机辅助下自制导向针测量前倾角在股骨颈内固定术中对前倾角的定向很有帮助。

Objective To explore an effective method of measuring femoral anteversion angle before the internal fixation of femoral neck fracture and femoral intertrochanteric fracture.And use the degree of femoral anteversion angle to improve the precision of guide pin in operation.Methods The measuring principle was used on traction table,pelvis,affected limb and home-made guide pin as one.The guide pin was set at horizontal position as a horizontal coordinate.The included angle between the femoral neck axial ray and guide pin in lateral projection radiography was measured under C-arm.The angle was the femoral anteversion angle.46 cases were recruited.Results The clincal application of 46 cases showed the femoral anteversion angle was 0～30°.41 cases were satisfied by only single puncture,3 cases were inclined to front side,2 cases were inclined to back side.Conclusions The application of measuring femoral anteversion angle by home-made guide pin in internal fixation neck under C-arm X-ray machine is very helpful.