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Treatment of intertrochanteric fracture with the Gamma AP locking nail or by a compression hip screw – a randomised prospective trial

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Abstract.

The Gamma AP (Asia-Pacific) locking nail (GAPN) is a modification of the standard Gamma locking nail made especially for use in Oriental patients. We made a randomised prospective comparison of the compression hip screw (CHS) and the Gamma AP locking nail for the internal fixation of 60 intertrochanteric fractures of the hip in elderly patients by comparing perioperative details and analysing the radiographic and clinical results. The operation time for the GAPN group was shorter than for the CHS group and the intraoperative blood loss was lower. The Gamma AP nail enabled earlier mobilisation. We found no significant difference in the time to union and the length of sliding of the lag screw between the two groups. The decrease in the neck shaft angle in the Gamma nail group was significantly smaller than in the CHS patients. There were no significant mechanical complications, such as fracture of the femoral shaft or failure of fixation in the Gamma nail group. On the basis of our observations we conclude that the Gamma AP locking nail is more efficient than the CHS in the treatment of intertrochanteric fractures in geriatric patients.

Résumé.

Le clou verrovillé Gamma AP (Asie Pacifique) est la modification du clou Gamma standard pour le morphotype Oriental. Nous avons compare au hasard la compression du col du fémur vissé au clou verrouillé Gamma AP pour la fixation de 60 fractures inter-trochantériennes du col de fémur, en comparant, les details périopératoires, en analysant la radiographie et les résultats cliniques chez des patients agés. La durèe d’opération pour le groupe GAPN était plus courte que pour le groupe CHS, et les pertes sanguines étaient plus faibles dans le groupe GAPN. Le clou Gamma AP favorise l’ambulation plus rapide. Nous n’avons trouvé aucune différence notable de temps de consolidation ni de glissement de la vis entre les deux groupes. La diminution d’angle cervico-diaphysaire dans le groupe clou Gamma était nettement moindre que celle du groupe CHS. Il n’y avait, pas de probléme mécanique grave dans le groupe clou Gamma comme la fracture de diaphyse femorale ou la fixation defailiante. Nous concluons que dans le traitement de la fracture intertrochanterienne de patients agés, le clou verrorillé Gamma AP serait plus efficace que le CHS.

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Accepted: 24 November 1997

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Park, SR., Kang, JS., Kim, HS. et al. Treatment of intertrochanteric fracture with the Gamma AP locking nail or by a compression hip screw – a randomised prospective trial. International Orthopaedics SICOT 22, 157–160 (1998). https://doi.org/10.1007/s002640050231

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  • DOI: https://doi.org/10.1007/s002640050231

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