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KMID : 0386720040160010063
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Journal of the Korean Hip Society
2004 Volume.16 No. 1 p.63 ~ p.70
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Comparison of IMHS (Intramedullary Hip Screw) and Compression Hip Screw in Treatment of Unstable Intertrochanteric Fracture of the Femur
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Chung Phil-Hyun
Hwang Chung-Soo
Kang Suk
Kim Jong-Pil
Kwak Ju-Yeong
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Abstract
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Purpose: The clinical results of IMHS (Intramedullary hip screw, Smith and Nephew Inc., Memphis, USA) and compression hip screw were compared and analyzed in the treatment of unstable intertrochanteric femoral fractures.
Materials and Methods: Fifty-five patients of unstable intertrochanteric fracture between February 1998 and February 2002 were reviewed by retrospective study. Thirty-five patients were treated with IMHS and 20 with a compression hip screw. The results were evaluated according to the time of weight bearing ambulation, the amount of sliding of the lag screw, the change in the neckshaft angle, the bone union time and postoperative complications.
Results: The mean time of full weight bearing ambulation was 1.3 weeks after surgery in the IMHS group (group 1) and 5.6 weeks in the compression hip screw group (group 2). The lag screw slid an average 2.7 mm in group 1 ´ and 5.6mm in group 2. The mean change in the neck-shaft angle was a 3.5° decrease in group 1 and a 6.5° decrease in group 2. Bony union was obtained in an average of 15.3 weeks in group 1 and 16.1 weeks in group 2.
Conclusion: IMHS was associated with earlier full weight bearing ambulation less sliding of the lag screw, and less change of the neck-shaft angle in the treatment of unstable intertrochanteric femoral fracture, as compared with the compression hip screw. Therefore, IMHS is a slightly more reliable choice than compression hip screw for treating an unstable intertrochanteric femoral fracture.
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KEYWORD
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Femur, Intertrochanteric fracture, Compression hip screw
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