Unsatisfactory accuracy as determined by computer navigation of VISIONAIRE patient-specific instrumentation for total knee arthroplasty.

This investigation evaluated the Smith and Nephew VISIONAIRE patient-specific cutting block (PSCB) system for total knee arthroplasty. A consecutive series of 60 patients was recruited. Intraoperative computer navigation was used to evaluate the accuracy of the cutting blocks in the coronal and sagittal planes for the tibia, as well as rotational plane for the femur.

Intraoperative computer navigation parameters are poor predictors of function 1 year after total knee arthroplasty.

Intraoperative navigation data were collected prospectively for 134 knees undergoing cemented, posterior-stabilized total knee arthroplasty. Partial least squares regression analysis was used to test the association between patient demographics and intraoperative data collected with a computer-assisted navigation system (coronal alignment, ligament balance, range of motion, external tibiofemoral rotation) with 1-year outcomes (36-item Short-Form Health Survey, Oxford Knee Score, range of motion). Age at surgery displayed the largest coefficients of any other predictor.

Is femoral nerve block necessary during total knee arthroplasty?: a randomized controlled trial.

There remains a lack of randomized controlled trials comparing methods of perioperative analgesia for total knee arthroplasty. To address this deficiency, a blinded, randomized controlled trial was conducted to compare the use of femoral nerve block (group F) and local anesthetic (group L). A sample of 55 patients who met the inclusion criteria were randomized to either group.

The use of linezolid in the treatment of infected total joint arthroplasty.

Fourteen patients with a diagnosis of infected total joint arthroplasty treated by 1 or 2-stage revision and a course of oral linezolid were reviewed. Patients were assessed according to McPherson stage, inflammatory markers, nature of surgery, use of antibiotics, pathogen isolated, and outcome at follow-up. Pathogens isolated were coagulase-negative staphylococcus, multiresistant Staphylococcus aureus, Enterobacter cloacae, and mixed growth.

Cruciate ligament reconstruction.

Injuries to the cruciate ligaments of the knee can be disabling. Advances in treatment over recent years have made their early diagnosis imperative. Surgical reconstruction is not appropriate for all.