Archives of orthopaedic and trauma surgery
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Arch Orthop Trauma Surg · Oct 2012
Blood transfusion and cytokines' changes in total knee replacement.
The aim of this prospective comparative study was to evaluate the serum levels of different cytokines and the frequency of adverse reactions and wound infections in patients who underwent total knee replacement (TKR) and were not transfused or received either allogeneic blood transfusion or postoperative auto-transfusion (PAT) with unwashed shed blood. ⋯ The immunological status-as expressed by the measured cytokine levels-is altered in patients receiving blood transfusion compared to patients receiving no blood transfusion during the first five postoperative days. PAT is preferable to allogeneic blood transfusion in terms of the rate of adverse reactions and superficial wound infections.
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Arch Orthop Trauma Surg · Oct 2012
Injection-induced low-grade infection of the shoulder joint: preliminary results.
Purulent arthritis of the shoulder has been widely reported. Low-grade post-operative infections of the shoulder have also been observed. Low-grade infections of the shoulder without prior surgery have not been reported in the literature. The purpose of this study is to present our experience of seven patients with low-grade infections of the shoulder without a history of prior surgery. ⋯ Level IV, retrospective case series, treatment study.
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Arch Orthop Trauma Surg · Oct 2012
Predictors of blood transfusion in patients undergoing elective surgery for degenerative conditions of the spine.
The requirement of blood in the surgery of degenerative conditions of lumbar spine is around 10 %. Preoperative autologous blood donation is an effective method that is used in surgeries with an important blood loss. This is an expensive method because of the great number of predonated blood units not used in the postoperative period (around 70 % in our practice). ⋯ Females, ASA 3, preoperative hemoglobin ≤136 g/L and age older than 60 years increase the risk to be transfused in the postoperative period for degenerative conditions of the spine.
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Arch Orthop Trauma Surg · Oct 2012
Underneath the cerclage: an ex vivo study on the cerclage-bone interface mechanics.
Cerclages regain interest due to a rising number of periprosthetic fractures. The contact distribution at the circumferential cerclage-bone interface is still unknown. Local interface pressure depends on the amount of contact area. Cortical damage at the interface would provoke cerclage loosening. Therefore, the contact area, the bone pressure along the interface and the cortical resistance underneath loaded cerclages were determined in an ex vivo model. ⋯ Point contact fixation of the cerclages installs non-loaded, spanned zones where the periosteum is not compressed, rendering a strangulation of the blood supply unlikely. Cortical bone withstands static concentric pressure produced by the cerclage. Cortical groove formation is attributed to instability under functional load and not to weakness of the cortex itself.
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Arch Orthop Trauma Surg · Oct 2012
The impact of coagulopathy on the outcome of traumatic epidural hematoma.
To evaluate the impact of trauma-associated coagulation disorders on the neurological outcome in patients with traumatic epidural hematoma undergoing surgical or non-surgical treatment. A retrospective analysis was performed using prospectively collected data in a consecutive patient series from a level 1 trauma center. ⋯ Poor outcome after traumatic epidural hematoma was associated with coagulopathy. Progression of epidural hematoma volume was not associated with coagulopathy or with poor neurological outcome. Prospective studies are needed to confirm these results.