Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · May 2014
Comparative StudyEffect of intraoperative weight-bearing simulation on the mechanical axis in total knee arthroplasty.
Successful outcome after total knee arthroplasty (TKA) requires precise realignment of the mechanical axis. The intraoperative assessment of the mechanical axis is difficult. Intraoperatively, the effect of weight bearing on the lower limb mechanical axis is ignored. We developed a custom-made mechanical loading device to simulate weight-bearing conditions intraoperatively and analysed its effect on the mechanical axis during TKA. ⋯ Intraoperative quantification and analysis of the mechanical lower limb axis applying defined axial loading by our custom-made loading apparatus is reliable. Ligament stability was unbalanced before TKA and balanced after TKA. For TKA, intraoperative simulation of weight bearing may be helpful to quantify, control and correct knee stability and its influence of mechanical axis.
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Arch Orthop Trauma Surg · May 2014
Operative treatment of displaced Pipkin type I and II femoral head fractures.
The optimal surgical approach for the treatment of femoral head fracture remains controversial. We retrospectively reviewed patients with Pipkin type I and II femoral head fractures managed surgically through posterior Kocher-Langenbeck approach and Ganz trochanteric flip approach aiming to define the best approach with the least morbidity. ⋯ Despite the limited number of patients, we can conclude that good final outcome does not necessarily follow a specific approach.
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Arch Orthop Trauma Surg · May 2014
Comparative StudyFixation of the shorter cementless GTS™ stem: biomechanical comparison between a conventional and an innovative implant design.
Conventional cementless total hip arthroplasty already shows very good clinical results. Nevertheless, implant revision is often accompanied by massive bone loss. The new shorter GTS™ stem has been introduced to conserve femoral bone stock. However, no long-term clinical results were available for this implant. A biomechanical comparison of the GTS™ stem with the clinically well-established CLS(®) stem was therefore preformed to investigate the targeted stem philosophy. ⋯ Both stems seem to provide a comparable and adequate primary stability. The shortened GTS™ design has a comparable rotational stability and bone-implant flexibility compared to a conventional stem. This study demonstrates that the CLS(®) stem and the GTS™ stem exhibit similar biomechanical behavior. However, a clinical confirmation of these experimental results is still required.
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Arch Orthop Trauma Surg · May 2014
Do we need intraoperative radiographs for positioning the femoral component in total hip arthroplasty?
Poor long-term results of total hip arthroplasty (THA) can result from femoral component misalignment. There are few reports that discuss the effectiveness of intraoperative radiographs for placing femoral components. This study is a retrospective review to find out the usefulness of intraoperative radiographs in detecting and improving the femoral component misalignment in posterior-approached primary THA. ⋯ Our data suggest that intraoperative radiography is a useful method for detecting the errors of placing the femoral components, and the success of a surgeon to correct those errors after detecting them intraoperatively.
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Arch Orthop Trauma Surg · May 2014
How international are the leading orthopedic journals: a look at the composition of the editorial board members of the top orthopedic journals.
Researches from the developing world contribute only a limited proportion to the total research output published in leading orthopedics journals. Some of them believe that there is substantial editorial bias against their work. We assessed the composition of the editorial boards of leading orthopedic journals. ⋯ The percentage of editorial board members in leading orthopedic journals is dominated by high-income countries with serious underrepresentation from low-income countries.