Does the wedge wing in the neck screw prevent cut-out failure in OTA/AO 31-A2 trochanteric fractures in elderly patients?

Gunay C., ATALAR H. , Altay M., Yavuz O. Y. , Yildirim A. O. , Oken O. F.

ACTA ORTHOPAEDICA BELGICA, vol.80, no.1, pp.26-33, 2014 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 80 Issue: 1
  • Publication Date: 2014
  • Page Numbers: pp.26-33


The purpose of this retrospective study was to evaluate the effects of Dyna Locking Trochanteric (DLT) nail (U & I Corporation 529-1, Yonghyun-dong, Uijungbu Kyunggi-Do, Korea 480-050) in 31-A1 and 31-A2 intertrochanteric femur fractures. Eighty-seven patients (63 female and 24 male, mean age 77 years) were treated. The mean duration of follow-up was 16.6 +/- 3.1 months (range, 12-24 months). There were 36 cases of 31-A1 and 51 cases of 31-A2 fractures. The duration of surgery, fluoroscopy screening time, the blood loss, the hospital stay, the tip-apex distance were significantly less in the 31-A1 fracture group compared with the 31-A2 fracture group (p < 0.001). Cut-out was observed in 13 patients (14.9%) above 80 years old with 31-A2 fractures. Especially in elderly patients with unstable 31-A2 fractures, the wedge wing on the neck screw does not work properly. Therefore further biomechanical investigations and also prospective clinical studies with larger series are needed to improve the device.