ハンソンピンを用いた大腿骨頚部骨折例における成績不良因子のX線学的検討

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概要

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• Objective: We studied roentgenographically the adverse factors affecting femoral neck fractures treated with Hansson pins.Methods: Between January 2007 and June 2010, we performed 75 femoral neck fracture fixations with Hansson pins. The average age at surgery was 70.2 years (range: 43-96 years) and the average follow up was 13.5 months (range: 6-38 months). To study the association with complications, the following clinical factors were evaluated: the Garden alignment index (GAI) of the lateral view, the distance of the subchondral bone of the femoral head from the Hansson pin, and the height of the distal Hansson pin.Results: The GAI of the lateral view was statistically significantly lower in the necrosis of the femoral head group (155.0±25.2) than in the non-necrosis of the femoral head group (174.1±11.0, P < 0.05); the GAI of the lateral view was also significantly lower in the non-union group (158.3±16.9) than in the union group (174.3±11.4, P < 0.01). No significant difference was found in the distance of subchondral bone of the femoral head to the Hansson pin between the non-union group and the union group. The height of the distal Hansson pin was significantly different between the subtrochanteric fracture group (−6.8±6.1 mm) and the non-subtrochanteric fracture group (5.2±6.2 mm, P < 0.05).Conclusions: To achieve favorable reduction, position and pin position are important to lower the risk of complications.

• 日本関節病学会の論文

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