Arthroplasty Research

20:10 EST 26th January 2020 | BioPortfolio

Kinematic analysis of motor learning in upper limb body-powered bypass prosthesis training.

Motor learning and compensatory movement are important aspects of prosthesis training yet relatively little quantitative evidence supports our current understanding of how motor control and compensation develop in the novel body-powered prosthesis user. The goal of this study is to assess these aspects of prosthesis training through functional, kinematic, and kinetic analyses using a within-subjec...

Differences in Baseline Joint Moments and Muscle Activation Patterns Associated With Knee Osteoarthritis Progression When Defined Using a Clinical Versus a Structural Outcome.

Both structural and clinical changes can signify knee osteoarthritis progression; however, these changes are not always concurrent. A better understanding of mechanical factors associated with progression and whether they differ for structural versus clinical outcomes could lead to improved conservative management. This study examined baseline gait differences between progression and no progressio...

ADVERSE EVENTS OF THE ARGUS II RETINAL PROSTHESIS: Incidence, Causes, and Best Practices for Managing and Preventing Conjunctival Erosion.

To analyze and provide an overview of the incidence, management, and prevention of conjunctival erosion in Argus II clinical trial subjects and postapproval patients.

Improved tissue integration of a new elastic intraperitoneal stoma mesh prosthesis.

Parastomal herniation is a frequent complication in colorectal surgery, occurring with a prevalence of 30-80%. The aim of the study was to create a new intraperitoneal colostoma mesh prosthesis (IPST) with enhanced elastic properties made with thermoplastic polyurethane (TPU) monofilaments. We performed open terminal sigmoid colostomies reinforced with either a 10 cm by 10 cm polyvinylidene fluori...

The seroprevalence of HIV in patients undergoing lower limb Total Joint Arthroplasty (TJA) in South Africa.

The aim was to assess the seroprevalence of Human Immunodeficiency Virus (HIV) in non-haemophilic patients undergoing primary Total Joint Arthroplasty (TJA) at an academic hospital in South Africa.

Interactions between Auditory and Vestibular Modalities during Stimulation with a Combined Vestibular and Cochlear Prosthesis.

A combined vestibular and cochlear prosthesis may restore hearing and balance to patients who have lost both. To do so, the device should activate each sensory system independently.

Correction: Unicondylar Tibiofemoral Arthroplasty - Opinions of the Members of the German Knee Society (DKG) and the German Professional Association of Orthopaedic and Trauma Specialists (BVOU).

Baseline gait muscle activation patterns differ for osteoarthritis patients who undergo total knee arthroplasty 5-8 years later from those who do not.

To determine if baseline quadriceps and hamstrings muscle activity patterns differed between those with medial-compartment knee osteoarthritis who advanced to total knee arthroplasty (TKA) and those who did not, and secondly to examine associations between features extracted from principal component analysis (PCA) and discrete measures.

A Man With Recurrent Fever, Episodic Rash, and Pain.

The patient presented to our clinic from out of state in October 2018. Previously, in 2014, he underwent an elective left total hip arthroplasty with a ceramic-on-polyethylene prosthesis for osteoarthritis. The surgery and recovery were uneventful. In November 2014, hives developed on his upper arms. Within weeks, the hives spread to his trunk and thighs but spared his face, palms, and soles. The ...

Mitral valve replacement with the 15-mm mechanical valve: a 20-year multi-center experience.

The aim of this study was to evaluate early and long-term outcomes (mortality and prosthetic valve replacement) after mitral valve replacement with the 15-mm St. Jude Medical prosthesis.

Vertebral Body Osteolysis 6 Years After Cervical Disk Arthroplasty.

Cervical arthroplasty is an accepted and widely performed surgical intervention with usually favorable outcomes. We report a rare case of a 37-year-old woman who presented with vertebral body osteolysis, 6 years after two-level cervical arthroplasty (C5-C6 and C6-C7). The patient showed no initial complications, but at year 6 she presented with neck and radicular arm pain. Diagnostic imaging revea...

Effect of external breast prosthesis mass on bra strap loading and discomfort in women with a unilateral mastectomy.

A common complaint of women who wear external breast prostheses following mastectomy is that they are too heavy. This study aimed to investigate the effect of external breast prosthesis mass on bra strap loading, discomfort and perceived pressure in women with a unilateral mastectomy.

Retrospective Cohort Study Comparing Complications, Readmission, Transfusion, and Length of Stay of Patients Undergoing Simultaneous and Staged Bilateral Total Hip Arthroplasty.

To determine whether the rates of postoperative complications, rate of readmission, cumulative transfusion volume, and length of stay (LOS) differ between simultaneous total hip arthroplasty (THA) and staged bilateral THA and to assess whether the length of the interval between staged procedures influences surgery outcome.

Comparison of Total Hip Arthroplasty after Two Types of Failed Hip Preserving Procedures with Primary Total Hip Arthroplasty.

Porous tantalum implantation (PTI) and bone impaction grafting (BIG) through a window at the femoral head neck junction are known as two types of joint-preserving procedures. They provide an alternative option in the treatment of osteonecrosis of the femoral head by providing strong structural support to the subchondral plate. However, when earlier joint-preserving treatments fail, conversion to a...

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.

Heterotopic Ossification in Total Ankle Arthroplasty: Case Series and Systematic Review.

Heterotopic ossification after total ankle arthroplasty (TAA) is a known sequela and has been reported to contribute to reduced range of motion and poor functional outcomes. However, conflicting results have been reported in the literature. The present study documents the incidence of heterotopic ossification for a novel fourth-generation fixed-bearing 2-component prosthesis and reports a systemat...

Guidewire Lost During the Deployment of a Nonretrievable Transcatheter Aortic Valve Prosthesis: A Nightmare Solution.

Transcatheter ViV Versus Redo Surgical AVR for the Management of Failed Biological Prosthesis: Early and Late Outcomes in a Propensity-Matched Cohort.

The aim of this study was to compare early and late outcomes between redo surgical aortic valve replacement (AVR) and valve-in-valve (ViV) transcatheter AVR.

Minimally invasive redo aortic valve replacement: results from a multicentric registry (SURD-IR).

Reoperation for aortic valve replacement (AVR) can be challenging and is usually associated with an increased risk for complications and mortality. The study aim was to report the results of a multicenter cohort of patients who underwent minimally invasive reoperative AVR with a sutureless or rapid-deployment prosthesis.

Multi-radius posterior-stabilized mobile-bearing total knee arthroplasty partially produces in-vivo medial pivot during activity of daily living and high demanding motor task.

The purpose of the present study was to assess the kinematical behavior of a multi-radius posterior-stabilized (PS) mobile-bearing (MB) total knee arthroplasty (TKA) during an activity of daily living (Sit-To-Stand-STS) and a high demanding motor task (Deep-Knee-Lunge-DKL) using model-based dynamic RSA. We hypothesized the achievement of medial pivoting movement in both motor tasks due to the cong...

Influence of proton pump inhibitor therapy on occurrence of voice prosthesis complications.

It has been shown that the reflux of the gastric content to the proximal oesophagus influences incidence of voice prosthesis (VP) complications in laryngectomized patients. We conducted prospective randomised study to investigate the relationship between pepsin concentration in saliva and occurrence of VP complications before and after 3 months of proton pump inhibitor (PPI) therapy.

Simultaneous Bilateral Total Knee Arthroplasty Becomes Safer after Institution of Optimal Perioperative Management: A Longitudinal Cohort Study.

Simultaneous bilateral total knee arthroplasty (SBTKA) increases the rates of procedure-related complications and mortality compared with unilateral TKA. There are no well-defined guidelines for selecting patients to avoid mortality and proposing an upgrade treatment to decrease complication rates. This study aimed to evaluate whether optimal perioperative management could improve the safety of SB...

Are Short-Stem Femoral Components a Viable Option in Total Hip Arthroplasty?: Commentary on an article by Janus D. Christiansen, MD, PhD, et al.: "An Ultra-Short Femoral Neck-Preserving Hip Prosthesis. A 2-Year Follow-up Study with Radiostereometric Analysis and Dual X-Ray Absorptiometry in a Stepwise Introduction".

Population-based Survivorship of Computer-navigated Versus Conventional Total Knee Arthroplasty.

The goal of computer navigation in total knee arthroplasty (TKA) is to improve the accuracy of alignment. However, the relationship between this technology and implant longevity has not been established. The purpose of this study was to analyze survivorship of computer-navigated TKAs compared with traditionally instrumented TKAs.

Patella Baja in Total Knee Arthroplasty.

Patella baja in total knee arthroplasty can result in impingement, pain, and decreased range of motion. Etiology can range from previous knee surgeries such as anterior cruciate ligament reconstruction, retrograde femoral nail, infrapatellar fat pad resection, and previous total knee arthroplasty. Diagnosis can be confirmed by one of a number of measurements of patellar height including Insall-Sal...

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