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Time Required for Planned and Unplanned Episodes of Care in Primary Total Joint Arthroplasty: Has Anything Changed With a Growth in Outpatient Arthroplasty?
Andrew N. Vega,Mary Ziemba-Davis,Shelly A. Hicks,R. Michael Meneghini,Leonard T. Buller
doi : 10.1016/j.arth.2020.10.015
HEALTH POLICY & ECONOMICS| VOLUME 36, ISSUE 4, P1195-1203, APRIL 01, 2021
This study sought to determine the total amount of time committed to planned and unplanned episodes of care related to primary, unilateral total joint arthroplasty (TJA), relative to a growth in outpatient TJA.
From Winners to Losers: The Methodology of Bundled Payments for Care Improvement Advanced Disincentivizes Participation in Bundled Payment Programs
Chad A. Krueger,Michael Yayac,Chris Vannello,John Wilsman,Matthew S. Austin,P. Maxwell Courtney
doi : 10.1016/j.arth.2020.10.034
HEALTH POLICY & ECONOMICS| VOLUME 36, ISSUE 4, P1204-1211, APRIL 01, 2021
The Bundled Payments for Care Improvement (BPCI) initiative improved quality and reduced costs following total hip (THA) and knee arthroplasty (TKA). In October 2018, the BPCI-Advanced program was implemented. The purpose of this study is to compare the quality metrics and performance between our institution’s participation in the BPCI program with the BPCI-Advanced initiative.
A Preoperative Risk Prediction Tool for Discharge to a Skilled Nursing or Rehabilitation Facility After Total Joint Arthroplasty
Daniel E. Goltz,Sean P. Ryan,David E. Attarian,William A. Jiranek,Michael P. Bolognesi,Thorsten M. Seyler
doi : 10.1016/j.arth.2020.10.038
HEALTH POLICY & ECONOMICS| VOLUME 36, ISSUE 4, P1212-1219, APRIL 01, 2021
Discharge to rehabilitation or a skilled nursing facility (SNF) after total joint arthroplasty remains a primary driver of cost excess for bundled payments. An accurate preoperative risk prediction tool would help providers and health systems identify and modulate perioperative care for higher risk individuals and serve as a vital tool in preoperative clinic as part of shared decision-making regarding the risks/benefits of surgery.
Reference Pricing Reduces Total Knee Implant Costs
Christopher J. Fang,Jonathan M. Shaker,Geoffrey E. Stoker,Andrew Jawa,David A. Mattingly,Eric L. Smith
doi : 10.1016/j.arth.2020.10.014
HEALTH POLICY & ECONOMICS| VOLUME 36, ISSUE 4, P1220-1223, APRIL 01, 2021
Reference pricing establishes a set price a hospital is willing to pay for total knee arthroplasty (TKA) components regardless of vendor. The hospital contracts with vendors that sell implants to the hospital at the hospital-dictated prices. Orthopedic surgeons are free to utilize any implant system that has met the reference price using their best clinical judgment. Our hypothesis is that vendors will meet the set price and selection of different vendors and technologies will not change.
Modern Internet Search Analytics and Total Joint Arthroplasty: What Are Patients Asking and Reading Online?
Tony S. Shen,Daniel A. Driscoll,Wasif Islam,Patawut Bovonratwet,Steven B. Haas,Edwin P. Su
doi : 10.1016/j.arth.2020.10.024
PRIMARY HIP & KNEE ARTHROPLASTY| VOLUME 36, ISSUE 4, P1224-1231, APRIL 01, 2021
Patients considering total joint arthroplasty often search for information online regarding surgery; however, little is known about the specific topics that patients search for and the nature of the information provided. Google compiles frequently asked questions associated with a search term using machine learning and natural language processing. Links to individual websites are provided to answer each question. Analysis of this data may help improve understanding of patient concerns and inform more effective counseling.
What Goes Bump in the Night: An Evaluation of Emergency Department Visits Following Total Joint Arthroplasty
Naomi Maldonado-Rodriguez,Rajiv Gandhi,Kala Sundararajan,Y. Raja Rampersaud,Nizar Mahomed,Timothy S. Leroux
doi : 10.1016/j.arth.2020.10.048
PRIMARY HIP & KNEE ARTHROPLASTY| VOLUME 36, ISSUE 4, P1232-1238, APRIL 01, 2021
Interest in postoperative healthcare utilization has increased following the implementation of episode-of-care funding for elective orthopedic surgery. Most efforts have focused on readmission; however, little has been reported on emergency department (ED) presentation. We analyzed elective, primary total hip or knee arthroplasty (THA and TKA) cases to determine the rate, reasons, risk factors, timing, and hospital cost associated with 30-day ED presentations.
A Comparison of the Surgical Practice of Potential Revision Outlier Joint Replacement Surgeons With Non-outliers: A Case Control Study From the National Joint Registry for England, Wales, Northern Ireland and the Isle of Man
Chris M. Penfold,Michael R. Whitehouse,Adrian Sayers,Yoav Ben-Shlomo,Andrew Judge,Ashley W. Blom
doi : 10.1016/j.arth.2020.10.026
PRIMARY HIP & KNEE ARTHROPLASTY| VOLUME 36, ISSUE 4, P1239-1245.E6, APRIL 01, 2021
The National Joint Registry for England, Wales, Northern Ireland and the Isle of Man (NJR) has monitored the performance of consultant surgeons performing primary total hip (THR) or knee replacements (KR) since 2007. The aims of this study were: 1) To describe the surgical practice of consultant hip and knee replacement surgeons in the National Joint Registry for England and Wales (NJR), stratified by potential outlier status for revisions. 2) To compare the practice of revision outlier and non-outlier surgeons.
A Fall Within 3 Months Before Total Joint Arthroplasty is Associated With Adverse Outcomes in Elderly Patients
Yash P. Chaudhry,Varun Puvanesarajah,Julius K. Oni,Robert S. Sterling,Harpal S. Khanuja
doi : 10.1016/j.arth.2020.10.025
PRIMARY HIP & KNEE ARTHROPLASTY| VOLUME 36, ISSUE 4, P1246-1250, APRIL 01, 2021
Falls are associated with morbidity and death in the elderly. The consequences of falls after total joint arthroplasty (TJA) are known, but the consequences of preoperative falls are unclear. We assessed associations between preoperative fall history and hospital readmission rates and discharge disposition after primary TJA.
Are Patients More Susceptible to Viral Illness Immediately Following Hip and Knee Arthroplasty? An Analysis of Influenza Diagnoses Using Multiple Administrative Databases
Nicole D. Quinlan,Brian C. Werner,Wendy M. Novicoff,James A. Browne
doi : 10.1016/j.arth.2020.10.045
PRIMARY HIP & KNEE ARTHROPLASTY| VOLUME 36, ISSUE 4, P1251-1256.E5, APRIL 01, 2021
Elective surgery elicits a systemic immune response and may result in transient immunosuppression in certain patients. It is currently unknown whether patients are at increased risk for viral infection and associated illness in the immediate postoperative period following total joint arthroplasty (TJA).
Routine Postoperative Complete Blood Counts Are Not Necessary After Most Primary Total Hip and Knee Arthroplasties
Alex K. Gilde,Katheryne L. Downes,Sherri Leverett,Michael A. Miranda
doi : 10.1016/j.arth.2020.10.047
PRIMARY HIP & KNEE ARTHROPLASTY| VOLUME 36, ISSUE 4, P1257-1261, APRIL 01, 2021
Routine postoperative complete blood count tests are commonplace after total joint arthroplasty. The goal of this study was to identify if these result in any clinically meaningful action and if it would be safe to forego this testing in a population without known risk factors for transfusion.
Leg-Length Change After Unilateral Unicompartmental Knee Arthroplasty in Varus Knee and Its Clinical Implications
F.C. Zhao,L. Zheng,Z.G. Hui,S.Z. Xu,L. Liu,Y. Lu
doi : 10.1016/j.arth.2020.10.041
PRIMARY KNEE| VOLUME 36, ISSUE 4, P1262-1268.E1, APRIL 01, 2021
To explore the magnitude of leg-length change after the unilateral index unicompartmental knee arthroplasty (UKA) in varus knee and its influence on clinical outcomes.
Long-Term Functional Outcomes and Quality of Life at Minimum 10-Year Follow-Up After Fixed-Bearing Unicompartmental Knee Arthroplasty and Total Knee Arthroplasty for Isolated Medial Compartment Osteoarthritis
Marcus Wei Ping Tan,Stacy Wei Ling Ng,Jerry Yongqiang Chen,Ming Han Lincoln Liow,Ngai Nung Lo,Seng Jin Yeo
doi : 10.1016/j.arth.2020.10.049
PRIMARY KNEE| VOLUME 36, ISSUE 4, P1269-1276, APRIL 01, 2021
The aim of this study is to compare the long-term functional outcome and quality of life between total knee arthroplasty (TKA) and fixed-bearing unicompartmental knee arthroplasty (UKA) for the treatment of isolated medial compartment osteoarthritis.
Patient-Reported Mental Health Score Influences Physical Function After Primary Total Knee Arthroplasty
Christopher M. Melnic,Aris Paschalidis,Akhil Katakam,Hany S. Bedair,Marilyn HengMGB Arthroplasty Patient-Reported Outcomes Writing Committee
doi : 10.1016/j.arth.2020.10.031
PRIMARY KNEE| VOLUME 36, ISSUE 4, P1277-1283, APRIL 01, 2021
Despite the effectiveness of total knee arthroplasty (TKA), patients often have lingering pain and dysfunction. Recent studies have raised concerns that preoperative mental health may negatively affect outcomes after TKA. The primary aim of this study investigates the relationship between patient-reported mental health and postoperative physical function following TKA.
Influence of Intraoperative Medial Collateral Ligament Bony Avulsion Injury on the Outcome of Primary Total Knee Arthroplasty
Natesan Rajkumar,Dhanasekaran Soundarrajan,Palanisami Dhanasekararaja,Shanmuganathan Rajasekaran
doi : 10.1016/j.arth.2020.10.051
PRIMARY KNEE| VOLUME 36, ISSUE 4, P1284-1294, APRIL 01, 2021
The purpose of this study is (1) to find the clinical and radiological outcome of intraoperative bony avulsion of medial collateral ligament (MCL) treated with screw and washer construct and (2) to predict the preoperative factors which may contribute to the avulsion-type MCL injury during primary total knee arthroplasty (TKA).
Patellar Denervation Reduces Postoperative Anterior Knee Pain After Patellar Resurfacing Total Knee Arthroplasty: A Randomized Controlled Trial
Satit Thiengwittayaporn,Pitch Tangtrakul,Natthapong Hongku,Revit Tunyasuwanakul
doi : 10.1016/j.arth.2020.10.046
PRIMARY KNEE| VOLUME 36, ISSUE 4, P1295-1301, APRIL 01, 2021
The benefit of patellar denervation (PD) in patellar resurfacing total knee arthroplasty (TKA) is still debatable. This prospective, randomized controlled trial investigated whether circumferential PD should be performed in patellar resurfacing TKA.
Is a Titanium Implant for Total Knee Arthroplasty Better? A Randomized Controlled Study
Jong-Keun Kim,In Woong Park,Du Hyun Ro,Bong-Su Mun,Hyuk-Soo Han,Myung Chul Lee
doi : 10.1016/j.arth.2020.11.010
PRIMARY KNEE| VOLUME 36, ISSUE 4, P1302-1309, APRIL 01, 2021
Lighter weight and lower modulus are potential advantages of titanium (Ti) implants over cobalt chrome (CoCr) implants in total knee arthroplasty (TKA). This study was conducted to determine whether Ti implants in TKA resulted in better clinical outcomes and radiologic results.
Bilateral vs Unilateral Total Knee Arthroplasty: Racial Variation in Utilization and In-Hospital Major Complication Rates
Bella Mehta,Kaylee Ho,Jennifer Bido,Linda Russell,Susan M. Goodman,Said Ibrahim
doi : 10.1016/j.arth.2020.10.057
PRIMARY KNEE| VOLUME 36, ISSUE 4, P1310-1317, APRIL 01, 2021
We sought to examine bilateral total knee arthroplasty (BTKA) vs unilateral TKA (UTKA) utilization and in-hospital complications comparing African Americans (AAs) and Whites.
Simultaneous Bilateral Primary Total Knee Arthroplasty With TXA and Restrictive Transfusion Protocols: Still a 1 in 5 Risk of Allogeneic Transfusion
Brian P. Chalmers,Mithun Mishu,Yu-fen Chiu,Peter K. Sculco,Friederich Boettner,Geoffrey H. Westrich
doi : 10.1016/j.arth.2020.10.042
PRIMARY KNEE| VOLUME 36, ISSUE 4, P1318-1321, APRIL 01, 2021
Historically, there was up to a 60% risk of blood transfusion for patients undergoing simultaneous bilateral total knee arthroplasty (SBTKA). As such, the goal of this study was to analyze the rate and risk factors for allogeneic blood transfusions in patients undergoing SBTKA with tranexamic acid (TXA).
Impact of Postoperative Zolpidem Use on Primary Total Knee Arthroplasty: A Retrospective Matched-Controlled Analysis of a Private Insurance Database
Andrew D. Ardeljan,Teja S. Polisetty,Joseph R. Palmer,Justin J. Toma,Rushabh M. Vakharia,Martin W. Roche
doi : 10.1016/j.arth.2020.10.058
PRIMARY KNEE| VOLUME 36, ISSUE 4, P1322-1329, APRIL 01, 2021
Zolpidem has gained popularity as a pharmaceutical therapy for insomnia, being the most prescribed hypnotic in the United States today. However, it is associated with increased mortality and morbidity. Literature regarding zolpidem use in the total knee arthroplasty (TKA) population is limited. The aim of the study was to analyze postoperative zolpidem use in the TKA population regarding medical and implant complications, falls, and readmission.
Long-Term (Up to 27 Years) Prospective, Randomized Study of Mobile-Bearing and Fixed-Bearing Total Knee Arthroplasties in Patients <60 Years of Age With Osteoarthritis
Young-Hoo Kim,Jang-Won Park,Young-Soo Jang
doi : 10.1016/j.arth.2020.10.050
PRIMARY KNEE| VOLUME 36, ISSUE 4, P1330-1335, APRIL 01, 2021
Our study determined long-term (up to 27 years) results of fixed-bearing vs mobile-bearing total knee arthroplasties (TKAs) in patients <60 years with osteoarthritis.
Assessment of Psychological Factors in Short-Stay Total Hip Arthroplasty Protocol
Mark A. Oyer,Adam I. Edelstein,Nathan F. Arnett,Kevin D. Hardt,David W. Manning,Michael D. Stover
doi : 10.1016/j.arth.2020.10.056
PRIMARY HIP| VOLUME 36, ISSUE 4, P1336-1341, APRIL 01, 2021
Several variables are known to correlate with the successful completion of short-stay total hip arthroplasty (THA) protocols. The role of psychological factors remains unclear. We investigated the interaction between patient-reported measures of psychological fitness and successful completion of a short-stay THA protocol.
Impact of Obesity on the Forgotten Joint Score Following Primary Total Hip Arthroplasty
Vivek Singh,David Yeroushalmi,Katherine A. Lygrisse,Ran Schwarzkopf,Roy I. Davidovitch
doi : 10.1016/j.arth.2020.10.027
PRIMARY HIP| VOLUME 36, ISSUE 4, P1342-1347, APRIL 01, 2021
Obesity is a growing public health concern. This study aims to identify the association of body mass index (BMI) on postoperative Forgotten Joint Score-12 (FJS-12) in patients undergoing primary total hip arthroplasty (THA).
Prior Femoroacetabular Osteoplasty Does Not Compromise the Clinical Outcome of Subsequent Total Hip Arthroplasty
Hamed Vahedi,Steven Yacovelli,Arash Aali Rezaie,George Komnos,Javad Parvizi
doi : 10.1016/j.arth.2020.10.037
PRIMARY HIP| VOLUME 36, ISSUE 4, P1348-1351, APRIL 01, 2021
Total hip arthroplasty (THA) is the most effective treatment option for patients with symptomatic osteoarthritis after a prior femoroacetabular osteoplasty (FAO). This study evaluated clinical outcomes of THA after a prior FAO and compared the results with a matched group of patients who underwent THA with no prior surgical procedures in the affected hip.
Total Hip Arthroplasty in Adolescents and Young Adults for Management of Advanced Corticosteroid-Induced Osteonecrosis Secondary to Treatment for Hematologic Malignancies
Meredith E. Bernhard,C. Lowry Barnes,Brian M. DeFeo,Xiaoqing Wang,Zhaohua Lu,Michael D. Neel
doi : 10.1016/j.arth.2020.10.019
PRIMARY HIP| VOLUME 36, ISSUE 4, P1352-1360, APRIL 01, 2021
Osteonecrosis of the femoral head (ONFH) is a potentially severe toxicity associated with glucocorticoid treatment for pediatric hematologic malignancy. We examined clinical outcomes of THA in adolescents and young adults treated for hematologic malignancies who developed advanced ONFH.
Compensated Cirrhosis Is Associated With Increased Risk of Complications Following Total Hip Arthroplasty in a Large Medicare Database
Sean B. Sequeira,Lawal A. Labaran,Joshua E. Bell,Raj M. Amin,Sandesh S. Rao,Brian C. Werner
doi : 10.1016/j.arth.2020.10.008
PRIMARY HIP| VOLUME 36, ISSUE 4, P1361-1366.E1, APRIL 01, 2021
The aim of this study is to evaluate medical and surgical complications of liver cirrhosis patients following total hip arthroplasty (THA), with attention to different etiologies of cirrhosis and their financial burden following THA.
Total Hip Arthroplasty in Patients With Osteopetrosis
Matthew P. Siljander,Robert T. Trousdale,Kevin I. Perry,Tad M. Mabry,Daniel J. Berry,Matthew P. Abdel
doi : 10.1016/j.arth.2020.10.018
PRIMARY HIP| VOLUME 36, ISSUE 4, P1367-1372, APRIL 01, 2021
Osteopetrosis is an inherited bone disease associated with high risk of osteoarthritis and fracture non-union, which can lead to total hip arthroplasty (THA). Bone quality and morphology are altered in these patients, and there are limited data on results of THA in these patients. The goals of this study were to describe implant survivorship, clinical outcomes, radiographic results, and complications in patients with osteopetrosis undergoing primary THA.
Contemporary Mortality Rate and Outcomes in Nonagenarians Undergoing Primary Total Hip Arthroplasty
Louis Dagneaux,Adam W. Amundson,Dirk R. Larson,Mark W. Pagnano,Daniel J. Berry,Matthew P. Abdel
doi : 10.1016/j.arth.2020.10.040
PRIMARY HIP| VOLUME 36, ISSUE 4, P1373-1379, APRIL 01, 2021
Nonagenarians (90-99 years) have experienced the fastest percent growth in primary THA utilization recently. However, there are limited data on this population. This study aimed to determine the mortality rate, implant survivorship, clinical outcomes, and complications of primary THAs in nonagenarians.
Predictive Factors for Revision and Survivorship Analysis of a Prevalent 36-mm Metal-on-Metal Total Hip Replacement System: A Large Single-Center Retrospective Cohort Study
Oliver Pearce,Gulraj S. Matharu,Ben J. Bolland
doi : 10.1016/j.arth.2020.10.028
PRIMARY HIP| VOLUME 36, ISSUE 4, P1380-1387, APRIL 01, 2021
To our knowledge, this is the largest single-center cohort of the 36-mm Corail-Pinnacle metal-on-metal total hip replacements system, aiming to determine 10-year survivorship and identify predictors of revision. We further assessed year of implantation given reports of manufacturing variations affecting shells made after 2006 predisposing these components to increasing wear.
Long-Term Survival (up to 34 Years) of Retained Cementless Anatomic Femoral Stem in Patients <50 Years Old
Young-Hoo Kim,Jang-Won Park,Young-Soo Jang
doi : 10.1016/j.arth.2020.10.055
PRIMARY HIP| VOLUME 36, ISSUE 4, P1388-1392, APRIL 01, 2021
There is a paucity of studies longer than 30 years to determine clinical and radiographic results of retained cementless anatomic stem. The purpose of this study is to determine the long-term (up to 34 years) survival rate of the retained cementless anatomic femoral stem in patients <50 years of age.
Minority Race and Ethnicity is Associated With Higher Complication Rates After Revision Surgery for Failed Total Hip and Knee Joint Arthroplasty
Christian Klemt,Paul Walker,Anand Padmanabha,Venkatsaiakhil Tirumala,Liang Xiong,Young-Min Kwon
doi : 10.1016/j.arth.2020.10.043
REVISION ARTHROPLASTY| VOLUME 36, ISSUE 4, P1393-1400, APRIL 01, 2021
Racial and ethnic disparities in access to hip and knee total joint arthroplasty (TJA) and postoperative outcomes have wide-reaching implications for patients and the health care system. The aim of this study is to evaluate the effect of ethnicity on clinical outcomes and complications following revision hip and knee TJA.
Migration Patterns for Revision Total Hip Arthroplasty in the United States as Reported in the American Joint Replacement Registry
Richard L. Illgen,David G. Lewallen,Patrick J. Yep,Kyle J. Mullen,Kevin J. Bozic
doi : 10.1016/j.arth.2020.10.030
REVISION ARTHROPLASTY| VOLUME 36, ISSUE 4, P1401-1406, APRIL 01, 2021
Revision total hip arthroplasty (revTHA) is associated with higher rates of complications and greater costs than primary procedures. The aim of this study is to evaluate the effect of hospital size, teaching status, and indication for revTHA, on migration patterns in patients older than 65 years old.
Risk Factors for Dislocation and Re-revision After First-Time Revision Total Hip Arthroplasty due to Recurrent Dislocation – A Study From the Danish Hip Arthroplasty Register
Lars L. Hermansen,Bjarke Viberg,Soeren Overgaard
doi : 10.1016/j.arth.2020.10.004
REVISION ARTHROPLASTY| VOLUME 36, ISSUE 4, P1407-1412, APRIL 01, 2021
Persistent instability after hip revision is a serious problem. Our aim was to analyze surgical and patient-related risk factors for both a new dislocation and re-revision after first-time hip revision due to dislocation.
High Incidence of Irradiated Cortical Strut Allograft Resorption Following Revision of Femoral Stems
Imran Ilyas,Omar A. Al-Mohrej
doi : 10.1016/j.arth.2020.10.023
REVISION ARTHROPLASTY| VOLUME 36, ISSUE 4, P1413-1419, APRIL 01, 2021
Despite the widespread use of revision total hip arthroplasties using cementless stems and cortical strut allografts, graft resorption has not been explicitly studied.
Variation in Inflammatory Biomarkers Among Demographic Groups Significantly Affects Their Accuracy in Diagnosing Periprosthetic Joint Infection
Fortunato G. Padua,Michael Yayac,Javad Parvizi
doi : 10.1016/j.arth.2020.10.036
COMPLICATIONS - INFECTION| VOLUME 36, ISSUE 4, P1420-1428, APRIL 01, 2021
Diagnosis of periprosthetic joint infection (PJI) is a multistep process that involves performing various tests including erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP). The latter two tests, despite being used at all times for PJI diagnosis, are known to be nonspecific and substantially affected by demographic characteristics, including age, gender, race, and body mass index. It is unknown how these variations affect the diagnostic utility of serological markers for PJI.
Periprosthetic Tibial Fractures After Total Knee Arthroplasty: Early and Long-Term Clinical Outcomes
Tejbir S. Pannu,Jesus M. Villa,Eric M. Cohen,Roman A. Hayda,Carlos A. Higuera,Matthew E. Deren
doi : 10.1016/j.arth.2020.10.035
COMPLICATIONS - OTHER| VOLUME 36, ISSUE 4, P1429-1436, APRIL 01, 2021
Although periprosthetic fractures are increasing in prevalence, evidence-based guidelines for the optimal treatment of periprosthetic tibial fractures (PTx) are lacking. Thus, the purpose of this study is to assess the clinical outcomes in PTx after a total knee arthroplasty (TKA) which were treated with different treatment options.
Oxidized Zirconium Components Maintain a Smooth Articular Surface Except Following Hip Dislocation
Noah B. Bonnheim,Douglas W. Van Citters,Michael D. Ries,Lisa A. Pruitt
doi : 10.1016/j.arth.2020.10.054
BASIC SCIENCE| VOLUME 36, ISSUE 4, P1437-1444, APRIL 01, 2021
Oxidized zirconium (OxZr) offers theoretical advantages in total hip and knee arthroplasty (THA and TKA, respectively) relative to other biomaterials by combining the tribological benefits of ceramics with the fracture toughness of metals. Yet, some studies have found that OxZr does not improve outcomes or wear rates relative to traditional bearing materials such as cobalt-chromium (CoCr). Separately, effacement of the thin ceramic surface layer has been reported for OxZr components, though the prevalence and sequelae are unclear.
In Vivo Knee Kinematics: How Important Are the Roles of Femoral Geometry and the Cruciate Ligaments?
Lauren A. Smith,Jarrod Nachtrab,Michael LaCour,Harold Cates,Mark G. Freeman,Richard D. Komistek
doi : 10.1016/j.arth.2020.10.020
BASIC SCIENCE| VOLUME 36, ISSUE 4, P1445-1454, APRIL 01, 2021
While posterior cruciate-retaining (PCR) implants are a more common total knee arthroplasty (TKA) design, newer bicruciate-retaining (BCR) TKAs are now being considered as an option for many patients, especially those that are younger. While PCR TKAs remove the ACL, the BCR TKA designs keep both cruciate ligaments intact, as it is believed that the resection of the ACL greatly affects the overall kinematic patterns of TKA designs. The objectives of this study are to assess the in vivo kinematics for subjects implanted with either a PCR or BCR TKA and to compare the in vivo kinematic patterns to the normal knee during flexion. These objectives were achieved with an emphasis on understanding the roles of the cruciate ligaments, as well as the role of changes in femoral geometry of nonimplanted anatomical femurs vs implanted subjects having a metal femoral component.
Can an OA Knee Brace Effectively Offload the Medial Condyle? An In Vivo Fluoroscopic Study
Garett M. Dessinger,Michael T. LaCour,Douglas A. Dennis,Lindsay T. Kleeman-Forsthuber,Richard D. Komistek
doi : 10.1016/j.arth.2020.10.044
BASIC SCIENCE| VOLUME 36, ISSUE 4, P1455-1461, APRIL 01, 2021
Previous studies evaluating the effectiveness of OA offloading knee braces focused on qualitative results. The objective of this study was to analyze the effectiveness of an off-loading knee brace with respect to in vivo three-dimensional knee kinematics to quantitatively measure the changes in medial joint space and relative bone alignment when wearing the brace.
The Impact of Author Financial Conflicts on Robotic-Assisted Joint Arthroplasty Research
Michael J. DeFrance,Michael F. Yayac,P. Maxwell Courtney,Matthew W. Squire
doi : 10.1016/j.arth.2020.10.033
SYSTEMATIC REVIEW AND META ANALYSIS| VOLUME 36, ISSUE 4, P1462-1469, APRIL 01, 2021
Recent studies have suggested clinical superiority with robotic-assisted arthroplasty compared to traditional techniques. However, concerns exist regarding the author’s financial conflicts of interest (COI), which may influence research outcomes. This study aimed to determine whether COI relating to robotic-assisted arthroplasty influences the results of published outcomes following total hip (THA), total knee (TKA), and unicompartmental knee arthroplasty (UKA).
Letter to the Editor on “High Incidence of Irradiated Cortical Strut Allograft Resorption Following Revision of Femoral Stems”
Zahraa I. Alghafli,Wael A. Rahman
doi : 10.1016/j.arth.2020.11.025
LETTER TO THE EDITOR| VOLUME 36, ISSUE 4, E23, APRIL 01, 2021
Response to Letter to the Editor on “High Incidence of Irradiated Cortical Strut Allograft Resorption Following Revision of Femoral Stems”
Imran Ilyas,Omar A. Al-Mohrej
doi : 10.1016/j.arth.2020.11.027
LETTER TO THE EDITOR| VOLUME 36, ISSUE 4, E24-E25, APRIL 01, 2021
Letter to the Editor on “Artificial Intelligence to Identify Arthroplasty Implants From Radiographs of the Hip”
Lingtong Kong,Xianzuo Zhang,Chen Zhu
doi : 10.1016/j.arth.2020.12.043
LETTER TO THE EDITOR| VOLUME 36, ISSUE 4, E26-E27, APRIL 01, 2021
Response to Letter to the Editor on “Artificial Intelligence to Identify Arthroplasty Implants From Radiographs of the Hip”
Jaret M. Karnuta,Heather S. Haeberle,Bryan C. Luu,Prem N. Ramkumar
doi : 10.1016/j.arth.2020.12.046
LETTER TO THE EDITOR| VOLUME 36, ISSUE 4, E28-E29, APRIL 01, 2021
Corrigendum to ‘Risk Classification for Primary Knee Arthroplasty’ [The Journal of Arthroplasty 24 (2009) 90-95]
Yassir Babiker Al-Arabi,Sergio Vargas-Prada,Sandeep Deo
doi : 10.1016/j.arth.2020.12.024
CORRIGENDUM| VOLUME 36, ISSUE 4, P1470, APRIL 01, 2021
Ed board
doi : 10.1016/S0883-5403(21)00177-7
EDITORIAL BOARD| VOLUME 36, ISSUE 4, PA1, APRIL 01, 2021
Table of Contents
doi : 10.1016/S0883-5403(21)00179-0
CONTENTS LIST| VOLUME 36, ISSUE 4, PA5-A8, APRIL 01, 2021
Conflict of Interest
doi : 10.1016/S0883-5403(21)00180-7
MISCELLANEOUS| VOLUME 36, ISSUE 4, PA9, APRIL 01, 2021
