Managing severe structural femoral metaphyseal bone loss in revision total knee arthroplasty is a challenging problem facing the revision knee surgeon. This study assesses the use of large (30 mm) metal distal femoral augments to compensate for severe bone deficiencies. Hospital for Special Surgery scores, Knee Society scores, and range of motion improved after implantation of femoral components with 30-mm distal femoral augments. There was no radiographic evidence of loosening, and no implants had been revised at mean 37-month follow-up. This appears to be an acceptable technique based on the intermediate-term results.
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http://dx.doi.org/10.3928/0147-7447-20020301-17 | DOI Listing |
Purpose: Tibial rotational deformity is a known risk factor for patellofemoral joint (PFJ) disorders. However, it is commonly associated with other abnormalities which affect the PFJ. The purpose of this study was to describe the prevalence of associated factors known to affect PFJ in patients undergoing rotational tibial osteotomy and their implication for the correction level.
View Article and Find Full Text PDFAnn Thorac Surg Short Rep
December 2024
Division of Cardiac Surgery, Inova Heart and Vascular Institute, Inova Health Systems, Falls Church, Virginia.
Background: DeBakey type I aortic dissections (AD) are most frequently treated with hemiarch repair. A subset of patients demonstrates persistent distal end-organ ischemia secondary to persistent true lumen (TL) compression. We describe the use of bare metal stent grafting across the residual arch dissection with the Zenith Dissection Endovascular Stent (ZDES, Cook Medical) in 7 patients with type I AD that was repaired in a hemiarch configuration with a compromised distal TL and organ malperfusion.
View Article and Find Full Text PDFInjury
December 2024
Golden Jubilee Medical Center, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.
Background: Severe metaphyseal comminution and sizable bone defect of the distal femur are high risks of fixation failure. To date, no exact magnitude of comminution and bone loss is determined as an indication for augmentation of fixation construct. The present study aimed to investigate the influence of metaphyseal gap width, working length, and screw distribution on the stability of the fixation construct.
View Article and Find Full Text PDFProc Inst Mech Eng H
January 2025
Department of Mechanical Engineering, Chandigarh University, Mohali, Punjab, India.
Bone is a highly heterogeneous and anisotropic material with a hierarchical structure. The effect of diaphysis locations and directions of loading on elastic-plastic compressive properties of bovine femoral cortical bone was examined in this study. The impact of location and loading directions on elastic-plastic compressive properties of cortical bone was found to be statistically insignificant in this study.
View Article and Find Full Text PDFPurpose Of The Study: Intraarticular fractures of the distal femur rank among the most severe musculoskeletal injuries. Various treatment options, such as plate osteosynthesis or retrograde nailing, can be employed. This study aims to evaluate the clinical outcomes and complications of intraarticular distal femoral fractures treated with retrograde femoral nail, with particular emphasis on C3 fractures.
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