27,540 results match your criteria Unicompartmental Knee Arthroplasty


[Limits of kinematic alignment and recommendations for its safe application].

Orthopade 2020 Jun 3. Epub 2020 Jun 3.

Orthopädische Klinik, Medizinische Hochschule Hannover im Annastift, Hannover, Deutschland.

Background: Despite the growing clinical evidence "pro" kinematic alignment (KA) in primary total knee arthroplasty, the idea of this individualized implant positioning has not (yet) become established throughout the community. Many surgeons have concerns about the safety of the method and the universality of its application. Interestingly, comparative studies with unlimited indications for KA showed only little or no advantage over standard mechanical alignment in contrast to studies with strict indications showing a significant benefit. Read More

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http://dx.doi.org/10.1007/s00132-020-03931-7DOI Listing

Early Outcomes of Medial Pivot Total Knee Arthroplasty Compared to Posterior-Stabilized Design: A Randomized Controlled Trial.

Clin Orthop Surg 2020 Jun 6;12(2):178-186. Epub 2020 May 6.

Department of Orthopaedics, Military Hospital, Kilkee, India.

Backgroud: The indications for total knee arthroplasty (TKA) have been expanded to include younger, demanding patients. Some TKA patients expect a return to high-performance activities to restore optimum quality of life. The concept of the medial pivot (MP) TKA is that more natural knee kinematics can be achieved by altering the bearing design. Read More

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http://dx.doi.org/10.4055/cios19141DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7237261PMC

The Medial Eminence Line for Predicting Tibial Fracture Risk after Unicompartmental Knee Arthroplasty.

Clin Orthop Surg 2020 Jun 27;12(2):166-170. Epub 2020 Apr 27.

Division of Rehabilitation Medicine, Kobe University Graduate School of Medicine, Kobe, Japan.

Backgroud: Tibial fracture after cementless Oxford unicompartmental knee arthroplasty (OUKA) is a rare but serious complication. It is reported more frequently in Asian countries. The aim of this retrospective study was to assess the morphological characteristics of the tibia by using a simple novel measurement method in patients with tibial fractures after OUKA. Read More

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http://dx.doi.org/10.4055/cios19011DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7237250PMC

Multimodal thromboprophylaxis in low-risk patients undergoing lower limb arthroplasty: A retrospective observational cohort analysis of 1400 patients with ultrasound screening.

J Orthop Surg (Hong Kong) 2020 Jan-Apr;28(2):2309499020926790

Joint Orthopaedic Centre, Sydney, Australia.

Purpose: This study reports the results of a multimodal thromboprophylaxis protocol for lower limb arthroplasty involving risk stratification, intraoperative calf compression, aspirin prophylaxis and early (within 4 h) post-operative mobilisation facilitated by the use of local infiltration analgesia. The study also aimed to identify risk factors for venous thromboembolism (VTE) within a 3-month period following surgery for patients deemed not at elevated risk.

Methods: Patients undergoing knee/hip arthroplasty or hip resurfacing were preoperatively screened for VTE risk factors, and those at standard risk were placed on a thromboprophylaxis protocol consisting of intraoperative intermittent calf compression during surgery, 300 mg/day aspirin for 6 weeks from surgery and early mobilisation. Read More

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http://dx.doi.org/10.1177/2309499020926790DOI Listing

Predictive Value of the Nomogram Model in Patients With Megaprosthetic Failure Around the Knee: A Retrospective Analysis.

J Arthroplasty 2020 May 15. Epub 2020 May 15.

Department of Bone Tumor, Tianjin Hospital, Tianjin, People's Republic of China.

Background: Megaprosthetic replacement is one of the main methods for reconstructing mega bone defects after tumor resection. However, the incidences of complication associated with tumor prostheses were 5-10 times higher than that of conventional total knee arthroplasty. The objective of this study is to establish and validate a nomogram model which can assist doctors and patients in predicting the prosthetic survival rates. Read More

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http://dx.doi.org/10.1016/j.arth.2020.05.016DOI Listing

Forgotten Joint Score Thresholds for Forgotten Joint Status and Patient Satisfaction after Unicompartmental Knee Arthroplasty in Chinese Patients.

J Arthroplasty 2020 May 11. Epub 2020 May 11.

Department of Orthopaedic Surgery, Beijing Jishuitan Hospital, Fourth Clinical College of Peking University, Beijing, China.

Background: The Patient Acceptable Symptom State (PASS) and "forgotten joint" represent 2 treatment goals that arthroplasty surgeons often pursue. However, the actual Forgotten Joint Score (FJS-12) that corresponds to the PASS and forgotten joint in unicompartmental knee arthroplasty (UKA) patients remains unknown.

Methods: One hundred ninety-three patients who underwent a medial UKA for knee osteoarthritis with a minimum of 1-year follow-up were included. Read More

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http://dx.doi.org/10.1016/j.arth.2020.05.010DOI Listing

Complication Rates after Lateral Plate Fixation of Periprosthetic Distal Femur Fractures: A Multicenter Study.

Injury 2020 May 22. Epub 2020 May 22.

Department of Orthopaedic Surgery, Stanford University, Stanford, CA.

Objective: Periprosthetic fractures of the distal femur can be challenging injuries to treat; nonunion rates of up to 22% have been reported. The purpose of this study was to determine the rate of complications and nonunion in a multicenter series, and to identify patient or surgical factors that were associated with nonunion.

Design: Retrospective comparative study SETTING: Three Level 1 trauma centers PATIENTS: Fifty-five patients with a periprosthetic distal femur fracture proximal to a total knee arthroplasty. Read More

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http://dx.doi.org/10.1016/j.injury.2020.05.009DOI Listing

Radiographic and Clinical Outcomes Following Robotic-Assisted Lateral Unicompartmental Knee Arthroplasty.

J Long Term Eff Med Implants 2019 ;29(3):191-196

OhioHealth Orthopedic Surgeons, Grant Medical Center, Columbus, OH 43215.

Much advancement has been made in the treatment of knee arthritis. A special area of interest has been the treatment of medial unicompartmental disease. However, patients with isolated lateral compartment arthritis represent a significant subset of the population. Read More

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http://dx.doi.org/10.1615/JLongTermEffMedImplants.2019030019DOI Listing
January 2019

Handheld, accelerometer-based navigation versus conventional instrumentation in total knee arthroplasty: a meta-analysis.

ANZ J Surg 2020 Jun 1. Epub 2020 Jun 1.

Department of Orthopaedics, Ballarat Health Services, Ballarat, Victoria, Australia.

Background: Precise and accurate alignments in total knee arthroplasty are important predictors for survivorship and functional outcomes. We aim to compare accelerometer-based navigation (ABN) to conventional instrumentation (CONV), patient-specific instrumentation (PSI) and computer-assisted surgery (CAS) in published literature.

Methods: A systematic search of publications from databases (MEDLINE, EMBASE and Cochrane) was obtained from inception to 15 August 2018. Read More

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http://dx.doi.org/10.1111/ans.15925DOI Listing

The effects of knee arthroplasty on plasma vitamin C concentrations and cognitive function: a case study.

J Surg Case Rep 2020 May 23;2020(5):rjaa111. Epub 2020 May 23.

The National Institute of Integrative Medicine, Hawthorn, Australia.

Post-operative neurocognitive disorders are becoming well-documented conditions, with their pathogenesis remaining unclear. Vitamin C is a molecule that has recently demonstrated both a potential link with cognitive function and a significant post-operative decline. Here, we present a case study of a 72-year-old male who underwent total knee replacement surgery. Read More

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http://dx.doi.org/10.1093/jscr/rjaa111DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7246336PMC

Manipulation Under Anesthetic After Primary Knee Arthroplasty Is Associated With a Higher Rate of Subsequent Revision Surgery.

J Arthroplasty 2020 Apr 11. Epub 2020 Apr 11.

Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; NIHR Biomedical Research Unit, University of Oxford, Oxford, UK; Nuffield Orthopaedic Centre, Oxford, UK.

Aim: To determine the association between manipulation under anesthetic (MUA) after primary knee arthroplasty and subsequent revision surgery.

Methods: Patients undergoing primary knee arthroplasty from April 2011 to April 2016 with minimum 1-year follow-up to April 2017 were identified from the national hospital episode statistics for England. The first arthroplasty per patient, per side, was included; cases with a record of subsequent infection or periprosthetic fracture were excluded. Read More

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http://dx.doi.org/10.1016/j.arth.2020.04.015DOI Listing

Ten-Year Results of Unicompartmental Knee Arthroplasty in Patients With Psychological Distress.

J Arthroplasty 2020 May 11. Epub 2020 May 11.

Department of Orthopaedic Surgery, Singapore General Hospital, Singapore, Singapore.

Background: Although the influence of psychological distress on the outcomes of total knee arthroplasty has been described extensively, its effect on unicompartmental knee arthroplasty (UKA) is poorly defined. Furthermore, most studies in arthroplasty literature had short follow-ups of ≤1 year. We investigated the influence of psychological distress on long-term patient-reported outcomes and analyzed the change in mental health after UKA in a cohort with minimum 10 years of follow-up. Read More

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http://dx.doi.org/10.1016/j.arth.2020.05.011DOI Listing

A lower threshold for revision of aseptic unicompartmental vs total knee arthroplasty.

Bone Joint J 2020 Jun;102-B(6_Supple_A):91-95

Anderson Orthopaedic Research Institute, Alexandria, Virginia, USA.

Aims: It has been hypothesized that a unicompartmental knee arthroplasty (UKA) is more likely to be revised than a total knee arthroplasty (TKA) because conversion surgery to a primary TKA is a less complicated procedure. The purpose of this study was to determine if there is a lower threshold for revising a UKA compared with TKA based on Oxford Knee Scores (OKSs) and range of movement (ROM) at the time of revision.

Methods: We retrospectively reviewed 619 aseptic revision cases performed between December 1998 and October 2018. Read More

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http://dx.doi.org/10.1302/0301-620X.102B6.BJJ-2019-1538.R1DOI Listing

Predicting implant size in total knee arthroplasty using demographic variables.

Bone Joint J 2020 Jun;102-B(6_Supple_A):85-90

Department of Orthopaedics, Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, New York, USA.

Aims: The purpose of this investigation was to determine the relationship between height, weight, and sex with implant size in total knee arthroplasty (TKA) using a multivariate linear regression model and a Bayesian model.

Methods: A retrospective review of an institutional registry was performed of primary TKAs performed between January 2005 and December 2016. Patient demographics including patient age, sex, height, weight, and body mass index (BMI) were obtained from registry and medical record review. Read More

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http://dx.doi.org/10.1302/0301-620X.102B6.BJJ-2019-1620.R1DOI Listing

Can a gait-dependent model predict wear on retrieved total knee arthroplasty components?

Bone Joint J 2020 Jun;102-B(6_Supple_A):129-137

Rush University Medical Center, Chicago, Illinois, USA.

Aims: A retrospective longitudinal study was conducted to compare directly volumetric wear of retrieved polyethylene inserts to predicted volumetric wear modelled from individual gait mechanics of total knee arthroplasty (TKA) patients.

Methods: In total, 11 retrieved polyethylene tibial inserts were matched with gait analysis testing performed on those patients. Volumetric wear on the articular surfaces was measured using a laser coordinate measure machine and autonomous reconstruction. Read More

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http://dx.doi.org/10.1302/0301-620X.102B6.BJJ-2019-1635.R1DOI Listing

Obesity and hypoalbuminaemia are independent risk factors for readmission and reoperation following primary total knee arthroplasty.

Bone Joint J 2020 Jun;102-B(6_Supple_A):31-35

Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania, USA.

Aims: Rates of readmission and reoperation following primary total knee arthroplasty (TKA) are under scrutiny due to new payment models, which penalize these negative outcomes. Some risk factors are more modifiable than others, and some conditions considered modifiable such as obesity may not be as modifiable in the setting of advanced arthritis as many propose. We sought to determine whether controlling for hypoalbuminaemia would mitigate the effect that prior authors had identified in patients with obesity. Read More

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http://dx.doi.org/10.1302/0301-620X.102B6.BJJ-2019-1509.R1DOI Listing

What is the impact of patellofemoral joint degeneration and malalignment on patient-reported outcomes after lateral unicompartmental knee arthroplasty?

Bone Joint J 2020 Jun;102-B(6):727-735

Department of Orthopaedic Surgery and Computer Assisted Surgery Center, Hospital for Special Surgery, New York, New York, USA.

Aims: It remains controversial whether patellofemoral joint pathology is a contraindication to lateral unicompartmental knee arthroplasty (UKA). This study aimed to evaluate the effect of preoperative radiological degenerative changes and alignment on patient-reported outcome scores (PROMs) after lateral UKA. Secondarily, the influence of lateral UKA on the alignment of the patellofemoral joint was studied. Read More

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http://dx.doi.org/10.1302/0301-620X.102B6.BJJ-2019-1429.R1DOI Listing

Patterns of cartilage loss and anterior cruciate ligament status in end-stage osteoarthritis of the knee.

Bone Joint J 2020 Jun;102-B(6):716-726

Royal Infirmary of Edinburgh, Edinburgh, UK.

Aims: This study aims to determine the proportion of patients with end-stage knee osteoarthritis (OA) possibly suitable for partial (PKA) or combined partial knee arthroplasty (CPKA) according to patterns of full-thickness cartilage loss and anterior cruciate ligament (ACL) status.

Methods: A cross-sectional analysis of 300 consecutive patients (mean age 69 years (SD 9.5, 44 to 91), mean body mass index (BMI) 30. Read More

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http://dx.doi.org/10.1302/0301-620X.102B6.BJJ-2019-1434.R1DOI Listing

Early joint replacement in juvenile idiopathic arthritis (JIA): trend over time and factors influencing implant survival.

Arthritis Care Res (Hoboken) 2020 May 31. Epub 2020 May 31.

ASST G.Pini-CTO, Milan, Italy.

Objective: To describe early prostheses implantation in a cohort of patients with juvenile idiopathic arthritis (JIA) followed in a tertiary referral hospital and to analyze possible factors influencing implant survival.

Methods: This is a retrospective cohort study. Charts of all JIA patients who underwent total joint replacement at G. Read More

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http://dx.doi.org/10.1002/acr.24337DOI Listing

Medial opening wedge high tibial osteotomy: more than ten years of experience with Puddu plate technique supports its indication.

Int Orthop 2020 May 30. Epub 2020 May 30.

Department of Orthopedic Surgery, Pontificia Universidad Católica de Chile, Santiago, Chile.

Purpose: To describe the short-term and long-term results of patients who underwent a medial opening wedge high tibial osteotomy (MOW-HTO) for unicompartmental medial knee joint osteoarthritis.

Methods: A retrospective review was conducted of patients with MOW-HTO using a Puddu plate®, with more than ten year follow-up. The degree of correction, initial chondral damage, number of meniscal lesions, preoperative and 1-year postoperative functional scale scores (IKDC and Lysholm), and arthroplasty conversion rates at the ten year follow-up were registered. Read More

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http://dx.doi.org/10.1007/s00264-020-04614-wDOI Listing

A prospective randomized controlled clinical investigation comparing two post-operative wound dressings used after elective hip and knee replacement; Mepilex® Border Post-Op versus Aquacel® surgical.

Int J Orthop Trauma Nurs 2020 Mar 12:100772. Epub 2020 Mar 12.

Ghent University Hospital, Ghent, Belgium. Electronic address:

Background: Post-operative wound complications, including blistering and surgical site infections, can increase recovery times, costs associated with hospital stay and morbidity.

Aim: To compare two post-operative wound dressings (Mepilex Border Post-Op and Aquacel Surgical), in patients undergoing elective hip or knee arthroplasty.

Methods: International, open-label, prospective, superiority, multicentre, randomised, parallel-group, controlled trial. Read More

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http://dx.doi.org/10.1016/j.ijotn.2020.100772DOI Listing

Revision arthroplasty with rotating hinge systems for total knee arthroplasty instability.

Oper Orthop Traumatol 2020 May 29. Epub 2020 May 29.

Department of Orthopaedic Surgery, Orthopädische Klinik König-Ludwig-Haus, Julius-Maximilians-University Würzburg, Brettreichstr. 11, 97074, Würzburg, Germany.

Objective: Restoring stability after total knee arthroplasty (TKA) and improving joint function using a cemented rotating hinge system.

Indications: Ligament instability and/or osseous defects (including Anderson Orthopaedic Research Institute [AORI] classification type II defects) after primary TKA or TKA revision surgery.

Contraindications: Distal femoral or proximal tibial bowing requiring implant systems that provide femoral or tibial offset stems. Read More

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http://dx.doi.org/10.1007/s00064-020-00663-xDOI Listing

The outcome of biphasic calcium phosphate bone substitute in a medial opening wedge high tibial osteotomy.

J Mater Sci Mater Med 2020 May 28;31(6):53. Epub 2020 May 28.

Sydney Orthopaedic Research Institute, Level 1 The Gallery, 445 Victoria Avenue, Chatswood, NSW, 2067, Australia.

Background: Our objective was to assess clinical and radiological findings following a medial opening wedge high tibial osteotomy using a biphasic calcium phosphate (BCP) synthetic bone substitute, designed as a wedge with two differing zones of density. The in-vivo behaviour of this type of bone substitute over time is currently unknown.

Hypothesis: Our hypothesis was that BCP synthetic bone would facilitate bone union and undergo replacement with host bone over the study period. Read More

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http://dx.doi.org/10.1007/s10856-020-06391-9DOI Listing

The Effect of Irrigation Fluid on Periprosthetic Joint Infection in Total Hip and Knee Arthroplasty: A Systematic Review and Meta-Analysis.

Cureus 2020 Apr 24;12(4):e7813. Epub 2020 Apr 24.

Orthopaedic Surgery, McMaster University, Hamilton, CAN.

Introduction Rates of osteoarthritis and total joint arthroplasty (TJA) are on the rise globally. Periprosthetic joint infection (PJI) is the most devastating complication of TJA. A number of different intraoperative interventions have been proposed in an effort to reduce infection rates, including antibiotic cements, local antibiotic powder, and various irrigation solutions. Read More

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http://dx.doi.org/10.7759/cureus.7813DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7249750PMC

Simultaneous single-stage versus two-staged bilateral total knee arthroplasty: a prospective comparative study.

Int Orthop 2020 May 26. Epub 2020 May 26.

Department of Orthopaedics, All India Institute of Medical Sciences, Rishikesh, India.

Purpose: The study aims to prospectively compare peri-operative morbidity and mortality of simultaneous single-stage bilateral total knee arthroplasty (SS BLTKA) with two-staged bilateral total knee arthroplasty (TS BLTKA) performed within 12 months of the first surgery. We hypothesized that SS BLTKA is as safe as TS BLTKA.

Methods: Patients with a minimum follow-up of 12 months were included in this study. Read More

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http://dx.doi.org/10.1007/s00264-020-04642-6DOI Listing

Biomechanical and Clinical Effect of Patient-Specific or Customized Knee Implants: A Review.

J Clin Med 2020 May 21;9(5). Epub 2020 May 21.

Department of Mechanical Engineering, Yonsei University, Seoul 50, Korea.

(1) Background: Although knee arthroplasty or knee replacement is already an effective clinical treatment, it continues to undergo clinical and biomechanical improvements. For an increasing number of conditions, prosthesis based on an individual patient's anatomy is a promising treatment. The aims of this review were to evaluate the clinical and biomechanical efficacy of patient-specific knee prosthesis, explore its future direction, and summarize any published comparative studies. Read More

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http://dx.doi.org/10.3390/jcm9051559DOI Listing

Musculoskeletal Multibody Simulation Analysis on the Impact of Patellar Component Design and Positioning on Joint Dynamics after Unconstrained Total Knee Arthroplasty.

Materials (Basel) 2020 May 21;13(10). Epub 2020 May 21.

Biomechanics and Implant Technology Research Laboratory, Department of Orthopaedics, Rostock University Medical Center, 18057 Rostock, Germany.

Patellofemoral (PF) disorders are considered a major clinical complication after total knee replacement (TKR). Malpositioning and design of the patellar component impacts knee joint dynamics, implant fixation and wear propagation. However, only a limited number of studies have addressed the biomechanical impact of the patellar component on PF dynamics and their results have been discussed controversially. Read More

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http://dx.doi.org/10.3390/ma13102365DOI Listing

Assessing the Role of Daptomycin as Antibiotic Therapy for Staphylococcal Prosthetic Joint Infection.

J Bone Jt Infect 2020 30;5(2):82-88. Epub 2020 Mar 30.

Hospital for Special Surgery, Infectious Disease Division, 535 East 70th Street, New York, NY 10065, USA.

: The role of daptomycin, a potent, safe, convenient anti-staphylococcal antibiotic, in treatment of prosthetic joint infection (PJI) is unclear. We evaluated our experience with the largest cohort of patients with staphylococcal PJI managed with daptomycin. : A cohort of staphylococcal hip and knee PJI treated with daptomycin was identified by hospital records from 2009 to 2016. Read More

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http://dx.doi.org/10.7150/jbji.41278DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7242404PMC

Goal Attainment Scaling Rehabilitation Improves Satisfaction with Work Activities for Younger Working Patients After Knee Arthroplasty: Results from the Randomized Controlled ACTION Trial.

J Bone Joint Surg Am 2020 May 25. Epub 2020 May 25.

Department of Orthopaedic Surgery, Foundation for Orthopaedic Research Care and Education, Amphia Hospital, Breda, the Netherlands.

Background: Knee arthroplasty (KA) is increasingly performed in relatively young, active patients. This heterogeneous patient population often has high expectations, including work resumption and performance of knee-demanding leisure-time activities. Goal attainment scaling (GAS) may personalize rehabilitation by using patient-specific, activity-oriented rehabilitation goals. Read More

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http://dx.doi.org/10.2106/JBJS.19.01471DOI Listing

Understanding the role of total knee arthroplasty for primary treatment of tibial plateau fracture: a systematic review of the literature.

J Orthop Traumatol 2020 May 25;21(1). Epub 2020 May 25.

Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, North Tower, Foothills Medical Centre, 1403 29 St NW, Calgary, T2N 2T9, AB, Canada.

Background: Surgical fixation of tibial plateau fracture in elderly patients with open reduction and internal fixation (ORIF) provides inferior outcomes compared with younger patients. Primary total knee arthroplasty (TKA) may be of benefit in elderly patients with a combination of osteoporotic bone and metaphyseal comminution. However, there continues to be conflicting evidence on the use of TKA for primary treatment of tibial plateau fracture. Read More

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http://dx.doi.org/10.1186/s10195-020-00546-8DOI Listing

Influence of fulfilment patient expectations in outcomes after total knee arthroplasty.

Rev Esp Cir Ortop Traumatol 2020 May 22. Epub 2020 May 22.

Área Docente de Bioestadística, Departamento de Matemáticas, Universidad de Castilla La Mancha, Ciudad Real, España.

Background And Objective: Compliance with preoperative expectations of patients undergoing total knee arthroplasty (TKA) is related to the degree of satisfaction, but its effect on other outcomes has not been studied. The aim of this study is to determine whether meeting expectations influences clinical, functional and quality of life outcomes at one year after surgery.

Material And Methods: The expectations of 183 patients were evaluated through the Hospital for Special Surgery Knee Replacement Expectations Survey. Read More

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http://dx.doi.org/10.1016/j.recot.2020.03.002DOI Listing

All-Polyethylene Tibial Component Does Not Affect Survivorship of Medial Unicompartmental Knee Arthroplasty at Mid-Term Follow-Up.

J Knee Surg 2020 May 25. Epub 2020 May 25.

Department of Orthopaedic Surgery, Università degli Studi di Modena e Reggio Emilia, Modena, Emilia-Romagna, Italy.

The present study's primary aim was to determine the survivorship of a large cohort of patients implanted with a single design all-polyethylene tibial component medial unicompartmental knee arthroplasty (UKA). Its secondary purpose was to investigate the reasons underlying implant failure, with specific attention to component positioning and limb alignment. Between 2007 and 2013, 166 patients underwent medial UKA with a single design all-polyethylene tibial component at two centers. Read More

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http://dx.doi.org/10.1055/s-0040-1710360DOI Listing

The Influence of Patellofemoral Degenerative Changes on the Outcome of the Unicompartmental Knee Replacement: A Prospective Study.

J Knee Surg 2020 May 25. Epub 2020 May 25.

Department of Orthopaedics, University of New South Wales, Randwick, Sydney, Australia.

Unicompartmental knee arthroplasty (UKA) is a recognized procedure for treatment of medial compartment osteoarthritis. Patellofemoral (PF) joint degeneration is widely considered to be a contraindication to medial compartment UKA. We examined the validity of this preconception using information gathered prospectively on 147 consecutive patients who underwent the Repicci II UKA for medial compartment osteoarthritis between July 1999 and September 2000 by the same surgeon. Read More

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http://dx.doi.org/10.1055/s-0040-1710567DOI Listing

[Italian Arthroplasty Registry: learning curve and optimization of data entry procedures.]

Recenti Prog Med 2020 May;111(5):327-330

Dipartimento MeSVA, Università dell'Aquila.

Arthroplasty registries represent a fundamental tool for the production of evidence in total joint replacement. Italy started in 2005 a national registry (Italian Arthroplasty Registry - RIAP) organised as federation of regional registries under the coordination of the Istituto Superiore di Sanità. However, data collection still appears to be hardened by the additional workload required from clinicians. Read More

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http://dx.doi.org/10.1701/3366.33414DOI Listing

Insulin-Dependent Diabetic Patients are at Increased Risk of Postoperative Hyperglycemia When Undergoing Total Joint Arthroplasty.

J Arthroplasty 2020 Apr 30. Epub 2020 Apr 30.

Hospital for Special Surgery, Ault Reconstruction and Joint Replacement, New York, NY.

Background: Diabetic patients are at an increased risk of prosthetic joint infection (PJI) after total joint arthroplasty (TJA). The relationship between insulin-dependence and PJI has not been investigated. We aimed at evaluating whether insulin-dependent diabetes mellitus (IDDM) patients were more susceptible to postoperative hyperglycemia and PJI than their non-insulin-dependent diabetes mellitus (NIDDM) counterparts. Read More

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http://dx.doi.org/10.1016/j.arth.2020.04.082DOI Listing

Reasons for Unsuccessful Same-Day Discharge Following Outpatient Hip and Knee Arthroplasty: 5½ Years' Experience From a Single Institution.

J Arthroplasty 2020 Apr 27. Epub 2020 Apr 27.

Department of Orthopaedics, Zuyderland Medical Center Heerlen and Sittard-Geleen, Geleen, The Netherlands.

Background: Outpatient joint arthroplasty (OJA) is considered safe and feasible in selected patients but should be further optimized to improve success rates. The purposes of this study are to (1) identify the main reasons of unsuccessful same-day discharge (SDD) following hip and knee arthroplasty; (2) determine the hospital length of stay (LOS) following unsuccessful SDD; and (3) assess which independent variables are related to specific reasons for unsuccessful SDD.

Methods: Five hundred twenty-five patients undergoing total hip arthroplasty (THA), total knee arthroplasty (TKA), and unicompartmental knee arthroplasty between 2013 and 2019 were retrospectively identified. Read More

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http://dx.doi.org/10.1016/j.arth.2020.04.064DOI Listing

The Need for an Interpreter Increases Length of Stay and Influences Postoperative Disposition Following Primary Total Joint Arthroplasty.

J Arthroplasty 2020 Apr 29. Epub 2020 Apr 29.

Division of Orthopedics - Adult Joint Reconstruction, NYU Langone Orthopedic Hospital, New York, NY.

Background: Many US patients who undergo total joint arthroplasty have low English proficiency, yet no study has investigated how the need for a translator impacts postoperative outcomes for these patients. We hypothesized that need for an interpreter after total joint arthroplasty would impact discharge disposition and length of stay.

Methods: We performed a retrospective chart review of patients at a single large urban academic institution undergoing single primary total joint replacement from July 2016 to November 2019. Read More

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http://dx.doi.org/10.1016/j.arth.2020.04.083DOI Listing

A systematic review of MAKO-assisted Unicompartmental Knee Arthroplasty.

Int J Med Robot 2020 May 23:e2124. Epub 2020 May 23.

Department of Orthopeadics, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.

Unicompartmental knee arthroplasty (UKA) which has many potential advantages compared with total knee arthroplasty (TKA) was widely used across the world in recent years. The introduction of the robot systems greatly makes up for the defects of the conventional UKA surgery such as higher complication rates and revision rates. MAKO system, a new image-guided robot system relies on a preoperative computed tomography (CT) scan to assist in preoperative mapping and planning, offers an opportunity to improve the outcome of UKA surgeries. Read More

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http://dx.doi.org/10.1002/rcs.2124DOI Listing

Effectiveness and safety of the use of antifibrinolytic agents in total-knee arthroplasty: A meta-analysis.

Medicine (Baltimore) 2020 May;99(20):e20214

Department of Spinal Surgery, The Third Affiliated Hospital of Anhui Medical University, Hefei.

Background: Antifibrinolytic agents have been successfully used to reduce blood transfusion demand in patients undergoing elective knee arthroplasty. The purpose of this study was to investigate different antifibrinolytic agents for patients undergoing total-knee arthroplasty (TKA).

Methods: We searched the randomized controlled trials assessing the effect of antifibrinolytic agents on TKA in MEDLINE, PubMed, Embase, and the Cochrane Library. Read More

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http://dx.doi.org/10.1097/MD.0000000000020214DOI Listing

Adductor canal block with periarticular infiltration versus periarticular infiltration alone after total knee arthroplasty: A randomized controlled trial protocol.

Medicine (Baltimore) 2020 May;99(20):e20213

Department of Ophthalmology and Otorhinolaryngology, Qianjiang District Chinese medicine hospital of Chongqing, Chongqing, China.

Background: Effective postoperative analgesia may enhance early rehabilitation after total knee arthroplasty (TKA). The purpose of this study is to perform a randomized controlled trial to compare the efficiency of adductor canal block (ACB) with periarticular infiltration (PAI) versus PAI alone for early postoperative pain treatment after TKA.

Methods: After institutional review board approval, written informed consent was obtained from patients undergoing elective TKA. Read More

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http://dx.doi.org/10.1097/MD.0000000000020213DOI Listing

The Rise of Obesity among Total Knee Arthroplasty Patients.

J Knee Surg 2020 May 22. Epub 2020 May 22.

Rubin Institute for Advanced Orthopedics, Center for Joint Preservation and Replacement, Rubin Institute for Advanced Orthopedics, Sinai Hospital of Baltimore, Baltimore, Maryland.

In the United States, one-third of adults are considered obese, and demand for total knee arthroplasty (TKA) is expected to rise in these patients. Surgeons are reluctant to operate on obese patients, but it is important to understand how obesity has affected TKA utilization. This study utilizes a national database to evaluate incidence, demographics, outcomes, charges, and cost in nonobese, overweight, nonmorbidly obese, and morbidly obese TKA patients. Read More

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http://dx.doi.org/10.1055/s-0040-1710566DOI Listing

Two-year recovery courses of physical and mental impairments, activity limitations, and participation restrictions after total knee arthroplasty among working-age patients.

Disabil Rehabil 2020 May 22:1-10. Epub 2020 May 22.

Department of Orthopedics, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.

Total knee arthroplasty is increasingly performed on working-age individuals, but little is known about their recovery process. Therefore this study examined recovery courses of physical and mental impairments, activity limitations and participation restrictions among working-age total knee arthroplasty recipients. Associated sociodemographic and health-related factors were also evaluated. Read More

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http://dx.doi.org/10.1080/09638288.2020.1766583DOI Listing

Outcomes and Survivorship of Biomet Microfixation Total Joint Replacement System: Results From an FDA Postmarket Study.

J Oral Maxillofac Surg 2020 Apr 23. Epub 2020 Apr 23.

Professor, Department of Oral and Maxillofacial Surgery, University of Pennsylvania School of Dental Medicine; and Vice Dean for Professional Services, University of Pennsylvania School of Medicine, Philadelphia, PA.

Purpose: In February 2011, the Food and Drug Administration issued a postmarket surveillance order to all manufacturers of temporomandibular joint (TMJ) implants in the United States. The objective of the present study was to measure implant subsequent surgical intervention (SSI) among patients who had undergone TMJ reconstruction with the Biomet TMJ replacement system (Zimmer Biomet, Warsaw, IN).

Materials And Methods: A prospective observational study was conducted by sending a questionnaire to patients who had received a Biomet TMJ replacement system from 1995 to 2010 in the United States. Read More

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http://dx.doi.org/10.1016/j.joms.2020.04.021DOI Listing

Differences in Pain, Opioid Use, and Function Following Unicompartmental Knee Arthroplasty compared to Total Knee Arthroplasty.

J Arthroplasty 2020 Apr 27. Epub 2020 Apr 27.

Department of Orthopaedic Surgery, New York University Langone Orthopaedic Hospital, New York, NY.

Background: We sought to determine if immediate postsurgical pain, opioid use, and clinical function differed between unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA).

Methods: A single-institution database was utilized to identify patients who underwent elective total joint arthroplasty between 2016 and 2019.

Results: In total, 6616 patients were identified: 98. Read More

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http://dx.doi.org/10.1016/j.arth.2020.04.072DOI Listing

Mental simulation practice has beneficial effects on patients' physical function following lower limb arthroplasty: a systematic review and meta-analysis.

Arch Phys Med Rehabil 2020 May 10. Epub 2020 May 10.

Science and Research Centre, Institute for Kinesiology Research, Koper, Slovenia; Faculty of Sport and Physical Education, University of Niš, Niš, Serbia.

Objective: To determine the effectiveness of mental simulation practice (MSP) on measures of physical function recovery in patients who have undergone a joint replacement surgery of lower limbs.

Data Sources: A systematic review was conducted using CINAHL, PubMed/MEDLINE, Embase, SPORT Discus, PEDro, Cochrane Register of Controlled Trials and Google Scholar from earliest record to 16 August 2019.

Study Selections: The following inclusion criteria were used to determine eligibility for studies: 1) randomised and matched controlled trials recruiting male and female adults who underwent primary unilateral joint arthroplasty; 2) the study examined effects of MSP intervention on measures of physical function recovery (both performance-based and patient self-reported); 3) measures of interest were compared between MSP and control groups. Read More

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http://dx.doi.org/10.1016/j.apmr.2020.04.004DOI Listing

New materials for hip and knee joint replacement: What's hip and what's in kneed?

J Orthop Res 2020 May 21. Epub 2020 May 21.

Department of Orthopaedic Surgery, Clinical and Translational Science Institute, University of Pittsburgh, Pittsburgh, Pennsylvania.

Over the last three decades there have been significant advancements in the knee and hip replacement technology that has been driven by an issue in the past concerning adverse local tissue reactions, aseptic and septic loosening. The implants and the materials we utilize have improved over the last two decades and in knee and hip replacement there has been a decrease in the failures attributed to wear and osteolysis. Despite these advancements there are still issues with patient satisfaction and early revisions due to septic and aseptic loosening in knee replacement patients. Read More

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http://dx.doi.org/10.1002/jor.24750DOI Listing

Isokinetic Strength Test of Muscle Strength and Motor Function in Total Knee Arthroplasty.

Orthop Surg 2020 May 21. Epub 2020 May 21.

Department of Orthopaedic Surgery, Qingdao Municipal Hospital, Qingdao, China.

Objective: To use isokinetic strength testing system to test and analyze the relationship between changes in muscle strength before and after knee replacement in patients undergoing total knee arthroplasty (TKA).

Methods: A total of 200 patients with advanced knee osteoarthritis treated from June 2018 to June 2019 were selected for TKA. The patient's isokinetic muscle strength test was performed in the first, third, and the sixth month before and after the operation. Read More

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http://dx.doi.org/10.1111/os.12699DOI Listing

Robotic-assisted unicompartmental knee arthroplasty has a greater early functional outcome when compared to manual total knee arthroplasty for isolated medial compartment arthritis.

Bone Joint Res 2020 Jan 16;9(1):15-22. Epub 2020 May 16.

Department of Orthopaedics, University of Edinburgh, University of Edinburgh, Edinburgh, UK.

Aims: The primary aim of the study was to compare the knee-specific functional outcome of robotic unicompartmental knee arthroplasty (rUKA) with manual total knee arthroplasty (mTKA) for the management of isolated medial compartment osteoarthritis. Secondary aims were to compare length of hospital stay, general health improvement, and satisfaction between rUKA and mTKA.

Methods: A powered (1:3 ratio) cohort study was performed. Read More

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http://dx.doi.org/10.1302/2046-3758.91.BJR-2019-0147.R1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7229306PMC
January 2020

Clinical Characteristics, Etiology, and Initial Management Strategy of Newly Diagnosed Periprosthetic Joint Infection: A Multicenter, Prospective Observational Cohort Study of 783 Patients.

Open Forum Infect Dis 2020 May 14;7(5):ofaa068. Epub 2020 May 14.

Department of Infectious Diseases, John Hunter Hospital, Newcastle, NSW, Australia.

Background: Periprosthetic joint infection (PJI) is a devastating complication of joint replacement surgery. Most observational studies of PJI are retrospective or single-center, and reported management approaches and outcomes vary widely. We hypothesized that there would be substantial heterogeneity in PJI management and that most PJIs would present as late acute infections occurring as a consequence of bloodstream infections. Read More

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http://dx.doi.org/10.1093/ofid/ofaa068DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7224250PMC

Multiple needle puncture combined with repetitive knee manipulation in total knee arthroplasty for correcting varus deformity.

J Orthop Surg (Hong Kong) 2020 Jan-Apr;28(2):2309499020924600

Department of Orthopedics, Faculty of Medicine, Prince of Songkla University, Songkhla, Thailand.

Purpose: Multiple needle punctures (MNPs), for gap balancing in total knee replacement, have less variability in gap widening compared to the conventional released technique. This study aimed to evaluate the outcome of gap-balancing techniques in varus osteoarthritis (OA) knees, by serial MNP, after a total knee prosthesis trial component was placed, combined with repetitive knee manipulation.

Methods: This study was a retrospective, case-matched study of 161 patients. Read More

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http://dx.doi.org/10.1177/2309499020924600DOI Listing