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KMID : 0386420210340020057
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Journal of the Korean Fracture Society
2021 Volume.34 No. 2 p.57 ~ p.63
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Comparison of the U-Blade Gamma3 Nail and the Zimmer Natural Nail for the Treatment of Intertrochanteric Fracture
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Seo Jae-Sung
Ryu Hyung-Gon
Roh Young-Ju
Shin Dae-Won
Kim Sang-Min
Kim Sang-Min
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Abstract
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Purpose: This study was performed to compare the clinical results and radiological follow-up differences between intertrochanteric fractures treated with the U-blade Gamma3 nail or the Zimmer natural nail (ZNN).
Materials and Methods: The medical records of 129 cases diagnosed with an intertrochanteric fracture (90 cases of U-blade Gamma3 nail, 39 cases of ZNN) from July 2015 to December 2018 were reviewed. Patients were assigned to a U-blade Gamma3 nail (n=39) or a ZNN (n=39) group. To reduce selective bias, groups were subjected to Propensity score matching by age, body mass index, bone mineral density, and fracture type. Patients that met the following criteria were excluded; age <65 years, non-ambulatory, high energy or pathologic fracture, and a follow-up of <6 months. Operation times, estimated blood losses, preoperative and postoperative Koval grades, Harris hip score and radiological lag screw positions in the femoral head, reduction quality, cut-out, tip-apex distance (TAD), lag screw sliding distances, and times to union were compared.
Results: Clinical results were similar in the two groups, but lag screw TAD was significantly greater in Ublade Gamma3 nail group (23.4 mm vs. 21.0 mm) (p=0.042). One case of cut-out occurred in the Ublade Gamma3 nail group, but no other nail-related postoperative complication was noted.
Conclusion: No significant difference was observed between the outcomes of U-blade Gamma3 nail or ZNN treatments of intertrochanteric fractures. We conclude that the U-blade confers no specific advantage.
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KEYWORD
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Femur, Intertrochanteric fractures, U-blade Gamma3 nail, Zimmer natural nail
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