Helical Blade Design

Abstract
Objective: To evaluate early experience with helical hip system in osteoporotic elderly patients with pertrochanteric
fractures.
Methods: The retrospective study was conducted at Aga Khan University Hospital, Karachi, and comprised records
of patients having low-velocity pertrochanteric fractures who were fixed with spiral blade Dynamic Helical Hip
Systemfrom July to December 2014 and were followed up for a minimum of 3 months. Demographic variables and
clinical outcomes were noted from the medical records whereas operative details were recorded from the operative
note. Radiological variables and outcomes were assessed by viewing appropriate pre-operative, post-operative and
follow-up radiographs.
Results: Of the 32 patients in the study, 14(44%) were men and 18(56%) were women, with an overall mean age of
77.81±7.04 years and mean body mass index of 25.99±4.13 kg/m2. Of the total, 1(3.13%) patient had implant cutout,
1(3.13%) had myocardial infarctionand 2(6.2) expired.
Conclusion: The introduction of spiral blade dynamic hip screw manifested favourable results and good clinical and
radiological outcomes with low cut-out rates.