Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Oct 2017
Coronal tibiofemoral subluxation is not an independent risk factor for total knee arthroplasty in patients with moderate to severe varus-osteoarthritis: data from the "Osteoarthritis Initiative".
Only few prognostic factors for progression of knee osteoarthritis are well established, including varus malalignment. The purpose of this study was to evaluate whether coronal tibiofemoral subluxation is a predictor for total knee arthroplasty. ⋯ III.
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Arch Orthop Trauma Surg · Oct 2017
Biomechanical study of novel unilateral C1 posterior arch screws and C2 laminar screws combined with an ipsilateral crossed C1-C2 pedicle screw-rod fixation for atlantoaxial instability.
Current surgical methods to treat atlantoaxial instability pose potential risks to the surrounding blood vessels and nerves of operative approach. Therefore, more secure and highly effective methods are expected. This study sought to assess the biomechanical efficacy of a novel unilateral double screw-rod fixation system by comparing with traditional and emerging fixation methods in cadaveric models. ⋯ The surgical technique of unilateral C1 PAS + C2 LS combined with a ipsilateral crossed C1-C2 PS-rod fixation could provide a better stability than the traditional unilateral PS-rod fixation and a same stability as bilateral PS-rod fixation, but with less risk of neurovascular injury. Therefore, this new technique may provide novel insight for an alternative of atlantoaxial instability treatment.
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Arch Orthop Trauma Surg · Oct 2017
Dynamic hip screw and fibular strut graft for fixation of fresh femoral neck fracture with posterior comminution.
Posterior comminution of the femoral neck fracture is a major cause of delayed and non-union owing to the loss of the buttressing effect against the posterior rotation. When a femoral neck fracture with posterior comminution is anatomically reduced, only the anterior portions of the femoral neck fracture surfaces are brought into contact leaving a posterior defect. The purpose of this study was to evaluate the use of fibular strut grafting and dynamic hip screw (DHS) for fresh femoral neck fractures with posterior comminution in young patient less than 50 years. ⋯ In our study, only one patient developed non-union and no patients had avascular necrosis of the femoral head. Closed reduction, fibular strut grafts, and DHS fixation is a reliable procedure for femoral neck fractures with posterior comminution in young adults.