Investigation of 11 Poor Cases of Femoral Trochanteric Fracture Treated with Compression Hip Screw

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  • 大腿骨転子部骨折に対するＣＨＳ術後不良例１１症例の検討

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The purpose of this study was to examine the cause of poor progress after operation with compression hip screw (CHS), and the permissible length of telescoping of a lag screw. We evaluated 139 femoral trochanteric fractures which were treated with CHS from February 2002 to May 2005. Seven patients had displacement of fracture fragments, and four had cutting out of lag screws. The causes of poor progress were incorrect reduction in one, fracture of the lag screw hole in five, and unknown in five. The mean length of the telescoping one week after the operation in these 11 poor patients was significantly larger (14.7mm vs 3.2mm: p<0.0001), and 78% of patients who had telescoping over 10mm in a week had displacement and poor progress. In conclusion, over 10mm telescoping in a week is considered to be excessive telescoping and careful observation is needed.

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