PubMed Journals Articles About "Minimising Tibial Fracture After Unicompartmental Knee Replacement Probabilistic" RSS

23:46 EDT 28th March 2020 | BioPortfolio

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Showing "Minimising Tibial Fracture After Unicompartmental Knee Replacement Probabilistic" PubMed Articles 1–25 of 3,800+

Minimising tibial fracture after unicompartmental knee replacement: A probabilistic finite element study.

Periprosthetic tibial fracture after unicompartmental knee replacement is a challenging post-operative complication. Patients have an increased risk of mortality after fracture, the majority undergo further surgery, and the revision operations are less successful. Inappropriate surgical technique increases the risk of fracture, but it is unclear which technical aspects of the surgery are most problematic and no research has been performed on how surgical factors interact.

Tibial tray thickness does not significantly increase medial tibial bone resorption: Using tibial bone density as an objective measurement method.

Recent studies have reported the occurrence of medial tibial bone resorption following total knee replacement. One study proposed that a thick tibial tray results in stress shielding and increases the risk of bone resorption, but its findings were based on subjective radiological assessment. This study aimed to verify this hypothesis and to objectively quantify medial tibial bone density by using serial measurements with digital radiological densitometry.

Outcomes of knee replacement in patients with posttraumatic arthritis due to previous tibial plateau fracture.

Tibial plateau fractures are routinely treated with open reduction internal fixation (ORIF); however, the long-term results of ORIF are unclear. The purpose of the current study is to evaluate outcomes in these patients, including: the rate of conversion of ORIF to total knee arthroplasty (TKA), the relationship between elevated inflammatory markers after the initial ORIF and subsequent infection in TKA, and the rationale behind performing the conversion to TKA in one step versus two steps.

The use of an asymmetrical tibial tray in TKA optimises tibial rotation when fitted to the posterior tibial plateau border.

The aim of this study was to evaluate the suitability of positioning an asymmetrical tibial tray relative to the posterior tibial edge and to analyse the relationship between the posterior fit and tibial rotation after computer-assisted total knee arthroplasty (TKA). It was hypothesised that an asymmetrical tray would adjust to the posterior border of the tibial plateau with proper tibial rotation.

Examining Timeliness of Total Knee Replacement Among Patients with Knee Osteoarthritis in the U.S.: Results from the OAI and MOST Longitudinal Cohorts.

Patients with knee osteoarthritis may undergo total knee replacement too early or may delay or underuse this procedure. We quantified these categories of total knee replacement utilization in 2 cohorts of participants with knee osteoarthritis and investigated factors associated with each category.

Knee Fracture Increases TKA Risk After Initial Fracture Treatment and Throughout Life.

Knee fractures may lead to post-traumatic knee osteoarthritis and subsequent TKA in some patients. However, absolute risk estimates and risk factors for TKA in patients with knee fractures compared with those of the general population remain largely unknown. Such knowledge would help establish the treatment burden and direct patient counseling after a knee fracture is sustained.

Presence of magnetic resonance imaging verified soft tissue injuries did not significantly affect the patient-reported outcome 12 months following a lateral tibial plateau fracture: A 12-month prospective cohort study of 56 patients.

Soft tissue injuries following lateral tibial plateau fracture affect more than half of patients. Regardless of the type of soft tissue injured, it is still unclear how different treatment strategies influence postoperative outcome. The aim of this study was to report the 12-month Knee Injury and Osteoarthritis Outcome Score (KOOS) of patients with surgically managed lateral tibial plateau fractures divided into groups with and without conservatively managed magnetic resonance imaging (MRI)-verified soft ti...

Anatomical tibial component is related to more medial tibial stress shielding after total knee arthroplasty in Korean patients.

This study aimed to investigate stress shielding of anatomical tibial components (ATCs) in comparison to conventional symmetric tibial components (STCs) in Korean patients which may be related to medial tibial bone loss.

Changes in Medial Meniscal 3D Position and Morphology Predict Knee Replacement in Rapidly Progressing Knee Osteoarthritis - Data from the Osteoarthritis Initiative (OAI).

To assess whether quantitative changes in the meniscus predict progression from early knee osteoarthritis (KOA) to knee replacement (KR).

Total Knee Arthroplasty in Patients with Prior Femoral and Tibial Fractures: Outcomes and Risk Factors for Surgical Site Complications and Reoperations.

To investigate the outcomes of total knee arthroplasty (TKA) in patients with a prior femoral or tibial fracture, and identify the risk factors for surgical site complications and reoperations.

Comparative Analysis of Mechanism-Associated 3-Dimensional Tibial Plateau Fracture Patterns.

The association between tibial plateau fracture morphology and injury force mechanism has not been well described. The aim of this study was to characterize 3-dimensional fracture patterns associated with hypothesized injury force mechanisms.

Effects of load carriage on biomechanical variables associated with tibial stress fractures in running.

Military personnel are required to run while carrying heavy body-borne loads, which is suggested to increase their risk of tibial stress fracture. Research has retrospectively identified biomechanical variables associated with a history of tibial stress fracture in runners, however, the effect that load carriage has on these variables remains unknown.

Distal tibial tuberosity high tibial osteotomy using an image enhancement technique for orthopedic scans in the treatment of medial compartment knee osteoarthritis.

To observe the efficacy of distal tibial tuberosity high tibial osteotomy in treating medial compartment osteoarthritis of the knee. In the experiment, a medical image enhancement algorithm based on shear wave domain improved Gamma correction was implemented to process medical images in order to diagnose patients more effectively.

Extramedullary Guide Alignment Is not Affected by Obesity in Primary Total Knee Arthroplasty.

Coronal alignment of the tibial implant correlates with survivorship of total knee arthroplasty (TKA), especially in obese patients. The purpose of this study was to determine if obesity affects coronal plane alignment of the tibial component when utilizing standard extramedullary tibial guide instrumentation during primary TKA. A retrospective review from June 2017 to February 2018 identified 142 patients (162 primary TKAs). There were 88 patients (100 knees) with body mass index (BMI) 

The tibial cut influences the patellofemoral knee kinematics and pressure distribution in total knee arthroplasty with constitutional varus alignment.

The current literature suggests that kinematic total knee arthroplasty (kTKA) may be associated with better outcome scores in patients with constitutional varus alignment. The underlying patellofemoral kinematic changes (patella tilting and patella tracking) and patellofemoral pressure distribution have not yet been described. The present study compared the effects of different tibial cuts, as used in kTKA, on patellofemoral knee kinematics and the pressure distribution, in addition to comparisons with the ...

The Distance between Tibial Tubercle and Trochlear Groove Correlates with Knee Articular Torsion.

This study aims to correlate the tibial tubercle to trochlear groove (TT-TG) distance with knee axial alignment. The hypothesis is that as internal torsion of the distal femur or external torsion of the proximal tibial increases, the TT-TG distance increases. We designed a cross-sectional study approved by our institutional ethics review board. We reviewed 32 computed tomography angiographies of patients that have nonjoint or bone-related symptoms. Distal femoral torsion, proximal tibial torsion, knee artic...

Tibial Shaft Fractures in Children: What to Do When Casting Fails?

Tibial shaft fractures in children can often be successfully managed with a well-molded cast that controls length, alignment, and rotation of the fracture. Acceptable alignment of tibial shaft fractures in children is less than 10° of coronal and sagittal angulation, 50% translation, and 10 mm of shortening. Fractures of the tibial shaft without an associated fibular shaft fracture may fall into varus malalignment despite initial adequate reduction and should be followed closely during the first 3 weeks af...

Accelerometer-Based Portable Navigation System Is Useful for Tibial Bone Cutting in Modified Kinematically Aligned Total Knee Arthroplasty.

Several studies have reported better clinical outcomes following kinematically aligned total knee arthroplasty (KA-TKA) than mechanically aligned TKA. Consistent reproduction of a KA-TKA is aided by accurate tibial bone resections using computer navigation systems. This study compares an accelerometer-based portable navigation system with a conventional navigation system on tibial bone resection and clinical outcomes in KA-TKA. This study included 60 knees of patients who underwent primary KA-TKA between Ma...

Tibial eminence fracture with midsubstance anterior cruciate ligament tear in a 10-year-old boy: A case report.

There are few reports about tibial eminence fractures with a concomitant midsubstance ACL tear in children. In this report, we present a case of a tibial eminence fracture with an ACL midsubstance tear in a 10-year-old boy.

Reproducing the Native Posterior Tibial Slope in Cruciate-Retaining Total Knee Arthroplasty: Technique and Clinical Implications.

Total knee arthroplasty (TKA) profoundly influences knee biomechanics. Using an arbitrary (often 3° to 5°) posterior tibial slope (PTS) in all cases seldom will restore native slope. This study examined whether the native PTS could be reproduced in cruciate-retaining TKA and how this would influence clinical outcome. Radiographic and clinical outcomes of 215 consecutive TKAs using the PFC sigma cruciate-retaining implant were evaluated. The tibial bone cut was planned to be made parallel to the native ana...

Morphometric study of gender difference in osteoarthritis posterior tibial slope using three-dimensional magnetic resonance imaging.

Posterior tibial slope (PTS) is an important parameter of sagittal alignment associated with postoperative stability and kinematics after total knee arthroplasty (TKA). However, data are limited regarding the innate gender differences in PTS in Koreans. The current study separately measured the PTS of the medial and lateral tibial plateau on magnetic resonance images of 511 patients with knee joint osteoarthritis who had Kellgren and Lawrence grade 3 and 4 (430 women, 81 men) and compared the measurements b...

A modified technique for tibial bone sparing in unicompartmental knee arthroplasty.

Previously, the authors modified the surgical technique to preserve tibial bone mass for Oxford unicompartmental knee arthroplasty (UKA). The purpose of this study was to determine the clinical outcomes and values of this modified technique.

The projected burden of knee osteoarthritis in New Zealand: healthcare expenditure and total joint replacement provision.

To estimate the healthcare costs and demand for total knee replacement (TKR) associated with knee osteoarthritis in New Zealand over the period 2013-2038 and the contribution of increasing obesity rates to these costs.

Distal tibial tubercle osteotomy is superior to the proximal one for progression of patellofemoral osteoarthritis in medial opening wedge high tibial osteotomy.

To investigate the effect of proximal tibial tubercle osteotomy (PTO) and distal tibial tubercle osteotomy (DTO) in medial opening wedge high tibial osteotomy on patellofemoral alignment, patellofemoral osteoarthritis and clinical outcomes.

High validity of measuring the width and volume of medial meniscal extrusion three-dimensionally using an MRI-derived tibial model.

Medial meniscal extrusion (MME) is an important marker of knee osteoarthritis (KOA) progression. The purposes of this study were: 1) to determine whether there are morphological differences between CT- and MRI-derived tibial plateau models; and 2) to determine whether measurement of MME volume and width using an MRI-derived tibial model is as accurate as measurements on a CT-derived tibial model.

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