title: Does the wedge wing in the neck screw prevent cut-out failure in Ota/AO 31-A2 trochanteric fractures in elderly patients?
abstract: 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 followup 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.
authors.forename: Cuneyd
authors.initials: C
authors.lastname: Gunay
authors.forename: Hakan
authors.initials: H
authors.lastname: Atalar
authors.forename: Murat
authors.initials: M
authors.lastname: Altay
authors.forename: Osman Yuksel
authors.initials: OY
authors.lastname: Yavuz
authors.forename: Ahmet Ozgur
authors.initials: AO
authors.lastname: Yildirim
authors.forename: Ozdamar Fuad
authors.initials: OF
authors.lastname: Oken
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001863:Bone Screws; D005260:Female; D006620:Hip Fractures / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012189:Retrospective Studies