Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · May 2016
ReviewBiomechanical effect of unloader braces for medial osteoarthritis of the knee: a systematic review (CRD 42015026136).
There is a lack of consensus regarding biomechanical effects of unloader braces for the treatment of medial osteoarthritis (OA) of the knee. The purpose of this study was to perform a systematic review of studies examining the biomechanical effect of unloader braces. ⋯ This systematic review could demonstrate evidence that unloader braces reduce the adduction moment of the knee. Foresighted, a systematic review about the clinical effect of unloader braces is required.
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Arch Orthop Trauma Surg · May 2016
Randomized Controlled TrialMeasuring long radiographs affects the positioning of femoral components in total knee arthroplasty: a randomized controlled trial.
The aim of this study was to investigate if preoperative measurements of the femoral valgus angle (FVA) affected the mechanical alignment, individual component positions and clinical outcome in total knee arthroplasty (TKA). ⋯ Preoperative FVA measurement and following femoral distal cut adjustments did not affect overall leg alignment postoperatively, while positioning of femoral component was improved together with minor improvements in objective KSS subscale scores.
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Arch Orthop Trauma Surg · May 2016
Pre-operative templating in total elbow arthroplasty: not useful.
Total elbow arthroplasty (TEA) is a definitive surgical procedure for treating rheumatoid arthritis and (posttraumatic) osteoarthritis of the elbow and is also useful in comminuted elbow fractures. Pre-operative digital templating may theoretically improve the surgical implantation of TEA, but reliability and predictive values of templating are unknown. The aim of this study was to determine the intra- and inter-observer reliability and the validity of pre-operative digital templating for TEA. ⋯ Pre-operative digital templating for TEA is a reliable method to plan implant sizes. However, the predictive value is low.
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Arch Orthop Trauma Surg · May 2016
Cobalt serum levels differ in well functioning Birmingham resurfacing and Birmingham modular THA.
Metal-on-metal (MoM) bearings are known to release metal ions secondary to wear and corrosion. This may cause local reactions (adverse soft tissue reactions and osteolysis) and systemic effects. Little is known about the exact pattern and the differences between large head MoM total hip replacements (THA) and resurfacings (HR). ⋯ Considering that HR and MoM-THA used the same MoM bearing design, increased cobalt levels may be related to trunnion wear or corrosion. Elevated cobalt levels should raise concern for corrosion related failure in MoM-THA.
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Arch Orthop Trauma Surg · May 2016
Anterior augmentation plating of aseptic humeral shaft nonunions after intramedullary nailing.
Humeral shaft nonunion after intramedullary nailing is a rare but serious complication. Treatment options include implant removal, open plating, exchange nailing and external fixation. The objective of this retrospective study was to determine whether augmentation plating without nail removal is feasible for treating a humeral shaft nonunion. ⋯ The results indicate that augmentation plating using an anterior approach is a safe and reliable option for humeral shaft nonunions after failed nailing, and the treatment has no substantial complications. Because the healing rates are similar to the standard technique of nail removal and fixation by compression or locking plates, we consider this technique to be an alternative choice for treatment.