OBJECTIVES The Sliding Hip Screw (SHS) is commonly used to treat trochanteric hip fractures. Fixation failure is a devastating complication requiring complex revision surgery. One mode of fixation failure is lag screw cut-out which is greatest in unstable fracture patterns and when the tip-apex distance of the lag screw is > 25 mm. The X-Bolt Dynamic Hip Plating System (X-Bolt Orthopaedics, Dub...

Previous mechanical studies concerning cut-out of lag screws for pertrochanteric hip fractures have relied on static or dynamic uniaxial loading regimens to induce construct failure by varus collapse and superior cut-out. However, the hip is loaded in a multiplanar, dynamic manner during normal gait. We designed a hip implant performance simulator (HIPS) system to evaluate lag screw cut-out und...

The reduction of hip fractures prior to using dynamic hip screw devices can be challenging. The use of folded paper recreates an optimal angle of 135 degrees to assess adequacy of hip fracture reduction and to alert the surgeon as to the precise entry point of the guidewire in the lateral cortex of the femur.

OBJECTIVE To determine the effect of reinforced calcium phosphate cement augmentation of the femoral neck defect created after dynamic hip screw removal in a cadaveric model. METHODS The lag screws of dynamic hip screw implants were inserted and subsequently removed in 8 matched pairs of cadaveric, osteoporotic femurs to create a femoral neck defect. One of each pair had the defect augmented ...

PURPOSE We aimed to evaluate and compare the clinical and functional outcomes of dynamic hip screw (DHS) and proximal femoral nail antirotation (PFNA) treatment of AO type 1 intertrochanteric fractures in elderly patients. MATERIALS AND METHODS We retrospectively reviewed 194 consecutive patients with type A1 intertrochanteric femoral fractures who were treated with DHS (n=113) or PFNA (n=81)...

OBJECTIVE To compare outcomes in octogenarians with younger patients up to 1 year after undergoing dynamic hip screw fixation for intertrochanteric fractures to see the effectiveness of the implant. METHODS The retrospective case-control study was conducted at The Aga Khan University and comprised records of patients who underwent dynamic hip screw surgery between January 1, 2010, and Decembe...