Medicine and Health Sciences Commons^™

Delayed Diagnosis Of Mycobacterium Bovis Bacillus Calmette-Guérin Periprosthetic Joint Infection Following Total Knee Arthroplasty, Christopher E. Pelt, Salika Shakir, Michael J. Cahill, Jakrapun Pupaibool, Barbara C. Cahill

SKMC Student Presentations and Publications

Periprosthetic joint infection (PJI) can present challenges in diagnosis and treatment, particularly in the setting of atypical causative organisms such as fungi and mycobacteria. Herein, we present a case and provide a review of the diagnosis and treatment of an unusual PJI caused by bacillus Calmette-Guérin, administered during the treatment of bladder cancer 3 years prior to total knee arthroplasty and subsequent PJI. Although the patient's history of bladder cancer was known, neither his Bacillus Calmette-Guérin treatment nor its potential for distant site spread that could lead to PJI were appreciated, leading to a prolonged diagnostic evaluation and treatment course.

Incidence Of Above Knee Amupations Due To Total Knee Arthroplasty Complications: A Comprehensive Analysis From A Midwest Metropolitan Hospital System, Robert Garner, Collin Erickson, Evan Johnson, Brandalynn Holland, Jacob Frisbie

Continental, MidAmerica, & Mountain Divisions GME Research Day 2024

No abstract provided.

Rare Case Of Prosthetic Joint Infection Caused By Salmonella Enterica - A Case Report, Carlos Ramos, Shyama Appareddy, Peter J. Gonzalez

Research Colloquium

Introduction: Collectively, over 1 million total knee arthroplasties (TKA) and total hip arthroplasties (THA) are performed in the United States each year. In 2010 it was estimated that 1.58% of the United States general population has received a TKA. Prosthetic joint infections (PJI) are the most common indication for a TKA revision1 . In total, S. aureus is responsible for about 50% of all prosthetic joint infections, and about 15% are caused by gram negative pathogens2 .

Objective: This is a case report which describes the presentation and clinical course of a 59-yearold female with Salmonella enterica septic arthritis of …

Giardia Lamblia Reactive Arthritis Mimicking Acute Periprosthetic Knee Infection: A Case Report, Rachael A. Turner, Justin N. Duke, Jared R.H. Foran

Research Symposium

Background: The difficulty in diagnosing Periprosthetic joint infection (PJI) is exacerbated by the more varied presentation of PJI and the lower synovial fluid WBC count thresholds applied when a prosthesis is present. Multiple reports have described pseudosepsis after total knee arthroplasty (TKA) due to gout or pseudogout. Further confusing the picture, periprosthetic infection also frequently coexists with crystalline arthropathy. Our review of the literature revealed no reports describing reactive arthritis (ReA) mimicking acute infection in the setting of previous TKA. In this case report, we describe a pseudo-periprosthetic infection of a well-functioning TKA secondary to ReA in the setting of …

A Modern Multimodal Pain Protocol Eliminates The Need For Opioids For Most Patients Following Total Knee Arthroplasty: Results From A Retrospective Comparative Cohort Study, Leland Van Deventer, Amy Bronstone, Claudia Leonardi, Matthew Bennett, Peter Yager, Vinod Dasa

School of Medicine Faculty Publications

Purpose: Modern multimodal analgesia has been shown to significantly reduce opioid use following total knee arthroplasty (TKA). This study was conducted to determine if changing TKA discharge opioid prescriptions from automatic to upon request resulted in more opioid free recoveries without compromising pain control. Methods: Between December 2019 and August 2021, an orthopedic surgeon performed 144 primary unilateral TKAs; patients received the same multimodal analgesia protocol except for postoperative opioid prescribing. The first consecutively-treated cohort automatically received an opioid prescription following discharge (automatic group) and the second cohort received opioid prescriptions only upon request (upon request group). Opioid prescription data …

One And A Half-Stage Revision With Prosthetic Articulating Spacer For Definitive Management Of Knee Periprosthetic Joint Infection., Ahmed Siddiqi, Yusuf Mahmoud, Salvador A. Forte, Thomas A Novack, James Nace

Orthopedic Surgery Resident Research

This paper is a comprehensive review that describes indications, contraindications, clinical outcomes, and pearls and pitfalls of 1.5-stage revision total knee arthroplasty (TKA) utilizing a primary TKA femoral component, all-polyethylene tibial component, and hand-crafted antibiotic cement for the management of chronic periprosthetic joint infection. The 1.5-stage exchange TKA details placement of an articulating spacer for an indefinite period, prolonging revision until reinfection, deterioration of functional status, or construct failure. A 1.5-stage revision TKA technique is a viable option for treatment of chronic periprosthetic knee infections. The inherent advantages of decreased health-care costs, decreased morbidity and mortality, and improved emotional ease …

Peripheral Nerve Stimulation Improves Knee Pain Following Total Knee Arthroplasty: A Retrospective Study, David Gallacher, Paul Gastelum-Tapia, Napatkamon Ayutyanont, Upinder Singh, Sungkook Park

Far West Division GME Research Day 2023

No abstract provided.

Return To Work And Driving After Robotic Arm-Assisted Total Knee Arthroplasty, Manoshi Bhowmik-Stoker, Kevin K Mathew, Zhongming Chen, Antonia F Chen, William J Hozack, Ormonde Mahoney, Fabio R Orozco, Michael A Mont

Rothman Institute Faculty Papers

Background: Robotic arm-assisted total knee arthroplasty (RATKA) has demonstrated improved patient-reported outcome measures. Less evidence has been reported on how frequently patients return to complex activities of daily living. Our purposes were to investigate (1) hospital lengths of stay (LOSs) (2) discharge dispositions and (3) the rates and postoperative time intervals at which patients returned to driving and working.

Methods: A total of 50 RATKA patients who were employed prior to surgery were included. Outcomes included hospital LOS, discharge dispositions, return to driving, and return to work.

Results: A total of 48 patients (96%) were discharged home with self-care or …

The Outcomes Of Cemented Versus Cementless Total Knee Arthroplasty In Modern Day Patients With Osteoarthritis, Jordan Powelson

Capstone Showcase

Osteoarthritis (OA), the degeneration of cartilage and bone, is the most progressive musculoskeletal disease and a leading cause of disability in the United States, affecting over 27 million adults. Although conservative treatments for knee OA are available, total knee arthroplasty (TKA) is the only definitive treatment for end-stage knee OA. For the past several decades, the use of bone cement has been the gold standard for total knee arthroplasty, but the cementless TKA is being revisited as an option as the age of patients seeking TKA decreases and the average BMI increases. This review analyzes and compares the outcomes of …

Increased Use Of Opioids Perioperatively Leads To Unmanaged Postoperative Pain, Halida Sehic

Nursing | Senior Theses

Background: Total knee and total hip joint arthroplasty are two frequently preformed surgeries, with 5.2 million total knee arthroplasties performed the United States between the year 2000 and 2010 (Williams et al., 2015). Opioids are widely used to manage pain for patients undergoing total joint arthroplasty. However, use of opioids is associated with undesirable adverse effects, such as nausea and respiratory depression, (Johnson et al., 2011). In postoperative patients following total joint replacement, 75 % of the patients complain of inadequately controlled moderate to severe pain (De Luca et al., 2018). Increased use and overprescribing increase tolerance to opioids …

Unicompartmental Knee Arthroplasty Is Associated With A Lower Rate Of Periprosthetic Joint Infection Compared To Total Knee Arthroplasty, Cody S. Lee, Edwin P. Su, Michael B. Cross, Alberto V. Carli, David C. Landy, Brian P. Chalmers

Orthopaedic Surgery and Sports Medicine Faculty Publications

Background: Several studies have reported lower perioperative complications with unicompartmental knee arthroplasty (UKA) than with total knee arthroplasty (TKA). However, there is a paucity of data analyzing the incidence of periprosthetic joint infection (PJI) in similar patients undergoing UKA and TKA. As such, we sought to analyze the incidence of UKA and TKA PJI in a large matched population.

Material and Methods: The Mariner data set of the PearlDiver database was queried for all patients undergoing UKA or TKA during 2010-2017. Included patients were required to have at least 2 years of database inclusion after surgery. Patients were then matched …

Surgeon Decision-Making For Individuals With Obesity When Indicating Total Joint Arthroplasty, William F. Sherman, Akshar H. Patel, Nisha N. Kale, Christina M. Freiberger, C. Lowry Barnes, Olivia C. Lee

School of Medicine Faculty Publications

Background: Obesity is a risk factor for complications after total joint arthroplasty (TJA). This study analyzed the impact of individual surgeon demographics, financial concerns, and other factors in determining patient candidacy for TJA based on body mass index (BMI). Methods: A 21-question survey was approved by the American Association of Hip and Knee Surgeons Research Committee for distribution to its membership. Objective questions asked about surgeon or hospital BMI thresholds for offering TJA. Subjective questions asked about physician comfort discussing topics including obesity, bariatric surgery, and weight loss before TJA, as well as insurance and age considerations. Results: For TJA …

Patient Resilience Has Moderate Correlation With Functional Outcomes, But Not Satisfaction, After Primary Unilateral Total Knee Arthroplasty., Amer Haffar, Sean Bryan, Marc Harwood, Jess H. Lonner

Rothman Institute Faculty Papers

Background: As many as 20% of patients who undergo total knee arthroplasty (TKA) are dissatisfied. Psychological factors have been shown to play a role in outcomes after TKA. The purpose of this study was to investigate the impact of patient resilience on functional outcomes and satisfaction after primary unilateral TKA.

Methods: Eighty-six patients who underwent primary unilateral TKA by a single surgeon were studied. Primary outcomes were the Brief Resilience Scale (BRS), mental health component of the Veterans Rand 12-Item Health Survey (VR-12 MCS), Knee Injury and Osteoarthritis Outcome Score for Joint Replacement, and New Knee Society Score. Correlations between …

Kinematics In Total Knee Arthroplasty, Allan Roy Sekeitto

Electronic Thesis and Dissertation Repository

Total knee arthroplasty (TKA) continues to be a successful procedure for the past 50 years. We investigated the kinematics after under- and overstuffing the joint space with the polyethylene (PE) insert in both cruciate-retaining (CR) TKA and posterior-stabilized (PS) TKA. We compared CR and PS designs to evaluate their respective kinematic differences. This study employed a hybrid computational-experimental joint motion simulation on a 6 degrees of freedom joint motion simulator. Physical prototypes of a virtually performed TKA based on cadaveric CT scans and a virtual ligament model were utilized. We demonstrated understuffing decreases stability and the joint compressive forces, with …

Intraoperative Hypothermia In Patients Undergoing Total Knee Arthroplasty: A Cross-Sectional Study From A Developing Country, Ronika Devi Ukrani, Aiman Arif, Anum Sadruddin Pidani, Obada Hussein Hasan, Shahryar Noordin

Medical College Documents

Background: Intraoperative hypothermia is associated with various risk factors, morbidity, and mortality in patients undergoing total knee arthroplasty (TKA), increasing the emotional and financial burden on patients. This study aimed to identify risk factors of intraoperative hypothermia in patients undergoing TKA.
Materials and methods: All adult patients (⩾18 years) who underwent TKA from January 2016 to December 2017 at a tertiary-care hospital in Pakistan were included in this retrospective, cross-sectional study. Temperature < 36 °C was defined as hypothermia.
Results: The study included 286 patients (77.6% female) with a mean age of 61.4 ± 10.4 years. The overall proportion of intraoperative hypothermia was 26.6%. Of the total …

A Clinical Review Of Robotic Navigation In Total Knee Arthroplasty: Historical Systems To Modern Design., Ahmed Siddiqi, Timothy Horan, Robert M Molloy, Michael R Bloomfield, Preetesh D Patel, Nicolas S Piuzzi

Orthopedic Surgery Resident Research

Robotic-assisted total knee arthroplasty (RA-TKA) has shown improved reproducibility and precision in mechanical alignment restoration, with improvement in early functional outcomes and 90-day episode of care cost savings compared to conventional TKA in some studies. However, its value is still to be determined.Current studies of RA-TKA systems are limited by short-term follow-up and significant heterogeneity of the available systems.In today's paradigm shift towards an increased emphasis on quality of care while curtailing costs, providing value-based care is the primary goal for healthcare systems and clinicians. As robotic technology continues to develop, longer-term studies evaluating implant survivorship and complications will determine …

Reducing Length Of Stay After Total Hip And Knee Arthroplasty: Assessing Cost-Effectiveness, Caregiver Involvement And Surgical Approach, Bryn O. Zomar

Electronic Thesis and Dissertation Repository

Purpose

The overall purpose of this dissertation was to evaluate factors related to reducing length of stay after total hip and knee arthroplasty (THA and TKA).

Methods

Study 1 was a randomized controlled trial (RCT) to investigate the cost-effectiveness of outpatient THA compared to standard overnight stay. Study 2 was a prospective cohort study to assess patient- and caregiver-related factors and how they may relate to caregiver strain and level of assistance when caring for patients undergoing THA and TKA. Finally, Study 3 was a 2x2 factorial RCT to compare the trajectory of early functional recovery between the medial parapatellar …

Lateral Subvastus Lateralis Versus Medial Parapatellar Approach For Total Knee Arthroplasty, Sahil Prabhnoor S. Sidhu

Electronic Thesis and Dissertation Repository

The current gold standard surgical approach for Total Knee Arthroplasty (TKA) is a medial parapatellar approach (MPA). We aimed to study a novel lateral subvastus lateralis approach (SLA) for TKA and compare patient outcomes and joint kinematics to the MPA.

Patients with neutral or varus alignment undergoing primary TKA were recruited to undergo the SLA. At one year postoperative, patient outcomes (WOMAC, SF-12, KSS) and joint kinematics (using radio stereometric analysis (RSA)) were analyzed. 7 LPA and 7 MPA patients were compared.

The SLA resulted in improved medial femoral rollback early in flexion, but less “regular” (external) rotation of the …

Biomechanical Analysis Of Total Knee Arthroplasty Performed On A 6 Degree Of Freedom Joint Motion Simulator Linked To A Virtual Ligament Model In Mechanical And Kinematic Alignments, Jance Mcgale

Electronic Thesis and Dissertation Repository

Total knee arthroplasty (TKA) is a very successful surgery providing many patients with increased quality of life. Despite this, some patients are dissatisfied. There are also complications with total knee arthroplasty that lead to the need for revision surgery. Improvements in stability, soft tissue balance, joint kinematics and overall patient satisfaction may lead to a decrease in TKA revisions. It is still unclear what the optimal soft tissue tension, balance or alignment is to provide superior patient outcomes. Computational models provide a means to effectively parameterize ligaments and simulate multiple scenarios of TKA. This work implemented a sophisticated 6-degree of …

An Analysis Of Patients Undergoing Hip And Knee Arthroplasties In An Accountable Care Organization, Harjot Uppal

Honors Theses

Background. Total hip arthroplasty (THA) and total knee arthroplasty (TKA) are commonly performed procedures, with over one million executed each year in the United States (U.S.) (Steiner et al., 2012). By 2030, THA and TKA are projected to become the most frequently performed elective surgical procedures in the U.S. (Cram et al., 2012; Kurtz et al., 2009). Many of the previous studies on THA and TKA procedures have focused on women, primarily because they are at increased risks of developing knee osteoarthritis and sustaining hip fractures (Cummings et al., 1990; Hedlund et al., 1987; Hinton et al., 1995; Myers et …

Localized Cytokine Responses To Total Knee Arthroplasty And Total Knee Revision Complications, Nicole Prince, Julia A. Penatzer, Matthew J. Dietz, Jonathan W. Boyd

Faculty & Staff Scholarship

Background

The study of localized immune-related factors has proven beneficial for a variety of conditions, and one area of interest in the field of orthopaedics is the impact of implants and localized infections on immune response. Several cytokines have shown increased systemic concentrations (in serum/plasma) in response to implants and infection, but tissue-level cytokines have not been investigated as thoroughly.

Methods

This exploratory study investigated tissue-level cytokines in a cohort of patients (N = 17) in response to total knee arthroplasty and total knee revision to better understand the immune response to implants and localized infection (e.g., prosthetic joint infection). …

A Medial Congruent Polyethylene Offers Satisfactory Early Outcomes And Patient Satisfaction In Total Knee Arthroplasty, Benjamin M. Frye, Caitlyn Patton, Jason A. Kinney, T. Ryan Murphy, Adam E. Klein, Matthew J. Dietz

Faculty & Staff Scholarship

Background

Although a successful operation, almost 20% of patients are dissatisfied with total knee arthroplasty (TKA). The purpose of this retrospective cohort study was to see if a medial congruent (MC) polyethylene would offer satisfactory early outcomes and patient satisfaction after TKA.

Methods

We reviewed prospectively collected data on 327 TKAs using multiple bearings within the same implant system. Ninety-six received an MC bearing, 70 received a cruciate-retaining (CR) bearing, and 161 received a posterior-stabilized (PS) bearing. We evaluated the visual analog scale pain scores and range of motion (ROM) at 2 weeks, 6 weeks, 3 months, and 1 year; …

Conversion Total Knee Arthroplasty Needs Its Own Diagnosis Related Group Facility Reimbursement Code, Jonah Stein, Michael Yayac, Md, Gregory K. Deirmengian, Md, Javad Parvizi, Md, P. Maxwell Courtney, Md

Phase 1

Introduction: Conversion from a prior surgery to a total knee arthroplasty (TKA) is a more technically difficult procedure than primary TKA and is associated with worse short-term outcomes and increased complication and readmission rates, despite being undifferentiated under the current bundled payment model. The aim of this study was to determine differences in facility costs between primary TKA and conversion TKA, which we hypothesize are significant, to ensure providers are not penalized for treatment and high-risk patients have the same access to care.

Methods: We retrospectively reviewed a consecutive series of patients undergoing primary TKA at two hospitals within …

The Use Of Cementless Components Does Not Significantly Increase Procedural Costs In Total Knee Arthroplasty, Samantha Harrer, Michael Yayac, Md, William J. Hozack, Md, Javad Parvizi, Md, Frcs, P. Maxwell Courtney, Md

Phase 1

Introduction: Modern cementless total knee arthroplasty (TKA) designs have shown promising early clinical success; however, concerns exist regarding the higher cost of the cementless implants. The purpose of this study is to evaluate the total facility cost of cementless vs traditional cemented TKA along with the effect of cementless fixation on short-term outcomes.

Methods: We reviewed a consecutive series of patients between 2015 and 2017 who underwent either cementless or cemented primary TKA. Itemized facility costs were calculated for every procedure using a time-driven activity-based costing algorithm. Controlling for demographic variables and medical comorbidities, we performed a multivariate analysis …

Risk Factors For Liposomal Bupivacaine Resistance After Total Hip Or Knee Arthroplasties: A Retrospective Observational Cohort In 237 Patients, Scott Buzin, Arianna L. Gianakos, Deborah Li, Anthony Viola, Sherif Elkattawy, David M. Keller, Richard S. Yoon, Frank A. Liporace

Orthopedic Surgery Resident Research

Purpose: Liposomal bupivacaine demonstrated promise decreasing postoperative pain in total hip and total knee arthroplasty (THA/TKA). Some randomized trials have shown non-superior results; however, confounding variables were not accounted for in such analyses. This study attempts to determine risk factors associated with failure of pain management in patients receiving liposomal bupivacaine.

Methods: Postoperative pain scores were collected following primary or revision arthroplasties between January 2016 and December 2017. Retrospective analysis of institutional total joint quality and outcomes registry was screened and patients undergoing primary or revision arthroplasties who completed a multi-modal pain management including liposomal bupivacaine were included in the …

3d Printing Of Knee Models To Decrease Or Time And Reduce Revisional Surgery In Total Knee Arthroplasty (Tka), Lauren Schlegel, John Paul Prodoehl, Matthew Chadwick, Chris Li, Katelyn Koons, Jeffrey Henstenburg, Md

Phase 1

Project Background: Osteophytes are a common problem, affecting 2% of the United States population. For many elderly people, these osteophytes will cause them to seek medical attention. Due to the 2-D nature of MRIs and CT scans, it can be difficult to gain a complete understanding of the complicated soft tissue structures surrounding the joint when performing a Total Knee Arthroplasty(TKA). Without proper removal of osteophytes and correct soft tissue balancing, there is an increased rate of revisional surgery. By utilizing a 3-D model preoperatively and within the OR, surgeons can visualize various aspects of the knee to determine what …

3d Printing Of Bone Spurs Before Surgical Removal During Total Knee Arthroplasty, John Paul Prodoehl

Phase 1

Project Background: In the United States, total knee arthroplasty (TKA) is the most performed orthopaedic operation. Among the 700,00 patients who received TKA, 21-25% underwent revision due to knee instability. Proper stability of a TKA depends on soft tissue balance for proper alignment in flexion and extension, and improper soft tissue modification is the primary cause of early implant failure. Soft tissue balancing can be complicated by presence of osteophytes on the distal femur or proximal tibia, which may require removal. The three-dimensional structure of osteophytes is often difficult to visualize with imaging, which could cause incomplete removal. Utilizing 3D …

3d Printing Of Bone Spurs Before Surgical Removal, Matthew Chadwick, John Paul Prodoehl, Katelyn Koons, Chris Li, Lauren Schlegel, Jeffrey Henstenburg, Md

Phase 1

Project Background: In the US alone, total knee arthroplasty is the most common performed orthopedic surgery, with over 700,000 cases per year.1 Overall, 21-25% underwent revision due to instability.2 The stability of a TKA depends largely on soft tissue balance for proper alignment in flexion and extension. Soft tissue balancing in TKA depends on posterior femoral condylar osteophytes, which prevent full extension of the knee and increase tension posteriorly. Pre-operative soft tissue visualization is difficult and this leaves an increased chance for implant failure and revision surgery. Having a 3D model of the bone spur before and during the surgery …

3d Printing Of Bone Spurs Before Surgical Removal, Katelyn Koons, John Paul Prodoehl, Matthew Chadwick, Chris Li, Lauren Schlegel, Jeffrey Henstenburg, Md

Phase 1

Project Background: In the United States, 2% of the population will experience bone spurs, which will not resolve on their own.¹ Of people over 60 who experience a bone spur, 40% will require medical attention.² The soft tissue visualization appears to be difficult with imaging, leaving increased chance of poor balancing of the knee replacement. Osteophyte structure continues to be difficult to visualize in a 3D way and without their proper removal, can lead to increased rate of revision surgery. Having a 3D model of the bone spur may decrease risk of complication and enhance soft tissue modification …

Selective Serotonin Reuptake Inhibitors Are Associated With Increased Bleeding Related Complications Following Primary Total Hip And Total Knee Arthroplasty, Kyle Plusch, John Stammers, Mbbs, Frcs, Alexus M. Cooper, Chi Xu, Md, Paul Kitei, Md, Javad Parvizi, Md, Frcs, Jess H. Lonner, Md

Phase 1

Introduction: Approximately 10-22% of patients undergoing total hip arthroplasty (THA) and total knee arthroplasty (TKA) are diagnosed with depression. Pre-operative depression is associated with poorer patient reported outcomes, costs and increased complications. Selective serotonin-reuptake inhibitors (SSRIs) are first-line treatment for depression due to their efficacy and low side effect profile. There are conflicting studies regarding SSRI-related bleeding complications. This study compares the rate of bleeding-related complications in THA and TKA patients taking SSRI’s to a control group of non-SSRI users.

Methods: A retrospective single institution study of 16,407 primary THA and TKA’s from 2008 to 2018 was performed. Patients with …