97,067 results match your criteria Knee Joint


Immediate Effects of a Single Spinal Manipulation on Lower-Limb Strength in Healthy Individuals: A Critically Appraised Topic.

J Sport Rehabil 2020 Jun 5:1-5. Epub 2020 Jun 5.

Clinical Scenario: Many people with lower quarter musculoskeletal dysfunction present with muscle weakness. Strength training hypertrophies muscle and increases strength, but often requires periods over 6 weeks, which can exceed the episode of care. Weakness can persist despite muscle hypertrophy, particularly in the early stages of joint pathology or in the presence of limb or spinal joint hypomobility, which may inhibit muscle activation. Read More

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http://dx.doi.org/10.1123/jsr.2019-0372DOI Listing

Correlations between joint kinematics and dynamic balance control during gait in pregnancy.

Gait Posture 2020 May 22;80:106-112. Epub 2020 May 22.

Washington State University, 101 Physical Education Building, Pullman, WA, United States.

Background: Dynamic balance control degrades during pregnancy, but it is not yet understood why. Mechanical aspects of the body should directly affect walking balance control, but we have recently published papers indicating that weight gains during pregnancy explain very little dynamic balance changes. Our goal was to determine if lower extremity joint kinematic changes are an indicator of walking balance control. Read More

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http://dx.doi.org/10.1016/j.gaitpost.2020.05.025DOI Listing

Comparative risk-benefit profiles of different femoral drilling techniques in anterior cruciate ligament reconstruction: A protocol for a systematic review and network meta-analysis.

Medicine (Baltimore) 2020 Jun;99(23):e20544

Department of Orthopaedics, Xiangya Hospital, Central South University, Changsha, Hunan, China.

Background: Anterior cruciate ligament (ACL) injury experiences about 200,000 isolated cases annually, and ACL reconstruction has become the gold standard for the restoration of stability and functionality. In view of that incorrect graft placement is a common cause of ACL reconstruction failure, it is critically important to ensure that the tibial and femoral tunnels are properly placed during the operation. Therefore, we intend to conduct a network meta-analysis to comparatively evaluate the clinical outcomes among the different surgical techniques in ACL reconstruction. Read More

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http://dx.doi.org/10.1097/MD.0000000000020544DOI Listing

The Heterogeneity of Pediatric Knee Infections: A Retrospective Analysis.

J Pediatr Orthop 2020 Jul;40(6):314-321

Departments of Orthopaedics and Rehabilitation.

Background: Musculoskeletal infection is a major cause of morbidity in the pediatric population. Despite the canonical teaching that an irritable joint and signs of infection likely represent an infected joint space, recent evidence in the pediatric hip has demonstrated that alternative diagnoses are equally or more likely and that combinations of pathologies are common. The knee is the second most commonly infected joint in children, yet there remains a paucity of available data regarding the epidemiology and workup of the infected pediatric knee. Read More

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http://dx.doi.org/10.1097/BPO.0000000000001425DOI Listing

Association of Knee Pain and Crouch Gait in Individuals With Cerebral Palsy.

J Pediatr Orthop 2020 Jul;40(6):e504-e509

Gillette Children's Specialty Healthcare, St. Paul, MN.

Background: Crouch gait (ie, excessive knee flexion) is commonly seen in patients with cerebral palsy (CP) and has been inconsistently linked with knee pain. The definitive cause of knee pain is unknown, but may result from increased joint forces due to crouch gait kinematics. Our purpose was to determine whether knee pain is positively associated with knee flexion in gait among a large sample of ambulatory individuals with CP. Read More

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http://dx.doi.org/10.1097/BPO.0000000000001487DOI Listing

Incidence and Risk Factors for the Development of Acute Colonic Pseudo-Obstruction (Ogilvie Syndrome) in Total Joint Arthroplasty Patients.

J Am Acad Orthop Surg 2020 Jun 2. Epub 2020 Jun 2.

From the Department of Orthopaedic Surgery (Dr. Hsiue, Dr. Greig, Mr. Chen, Mr. Patel, Dr. Trikha, Dr. Stavrakis), David Geffen School of Medicine at UCLA, Los Angeles, CA, Department of Trauma and Orthopaedic Surgery (Dr. Rowan), University Hospital Waterford, Ireland, and the Division of Orthopaedic Surgery (Dr. Khoshbin), University of Toronto, Toronto, ON, Canada.

Background: Acute colonic pseudo-obstruction (Ogilvie syndrome [OS]) is a rare but devastating condition that can develop in orthopaedic patients postoperatively. The objective of this study was to identify the risk factors for developing OS after total hip arthroplasty (THA) or total knee arthroplasty (TKA) and to compare the outcomes between patients who did and did not develop OS postoperatively.

Methods: This was a retrospective review using the National Inpatient Sample, a national database incorporating inpatient hospitalization information. Read More

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http://dx.doi.org/10.5435/JAAOS-D-20-00096DOI Listing

Nutritional Counseling Program for Morbidly Obese Patients Enables Weight Optimization for Safe Total Joint Arthroplasty.

Orthopedics 2020 Jun 4:1-7. Epub 2020 Jun 4.

Obesity affects one-third of total joint arthroplasty (TJA) patients and is the most common modifiable risk factor for increased complications in the TJA population. The authors' institution implemented a body mass index (BMI) cutoff of 40 kg/m to define appropriate TJA candidates. Patients above the cutoff were referred for nutritional counseling. Read More

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http://dx.doi.org/10.3928/01477447-20200521-08DOI Listing

Influence of gravity on biomechanics in flywheel squat and leg press.

Sports Biomech 2020 Jun 5:1-17. Epub 2020 Jun 5.

Division of Environmental Physiology, Swedish Aerospace Physiology Centre, School of Engineering Sciences in Chemistry, Biotechnology, and Health (CBH), KTH Royal Institute of Technology , Solna, Sweden.

Resistance exercise on Earth commonly involves both body weight and external load. When developing exercise routines and devices for use in space, the absence of body weight is not always adequately considered. This study compared musculoskeletal load distribution during two flywheel resistance knee-extension exercises, performed in the direction of (vertical squat; S) or perpendicular to (horizontal leg press; LP) the gravity vector. Read More

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http://dx.doi.org/10.1080/14763141.2020.1761993DOI Listing

Cellular and clinical analyses of autologous bone marrow aspirate injectate for knee osteoarthritis: a pilot study.

PM R 2020 Jun 5. Epub 2020 Jun 5.

Department of Physiatry, Hospital for Special Surgery, New York, New York.

Introduction: Knee osteoarthritis (OA) is characterized by pain and functional deficits. Common conservative strategies include medications, physical therapy, and intra-articular injections. Recently, treatment using autologous cell injections has increased. Read More

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http://dx.doi.org/10.1002/pmrj.12429DOI Listing

Falling risk in patients with end-stage knee osteoarthritis.

Clin Rheumatol 2020 Jun 4. Epub 2020 Jun 4.

Department of Rehabilitation and Movement Sciences, Physical Therapy Program North, Rutgers, School of Health Professions, The State University of New Jersey, 65 Bergen Street - Office 714A, Newark, NJ, 07107, USA.

Although 25% of patients with end-stage knee osteoarthritis (OA) have reported a fall, there is limited information about risk factors for falling in patients awaiting total knee arthroplasty (TKA). The purpose of this study was to identify clinical and functional measures related to fall risk. A total of 259 participants awaiting TKA for OA participated in this secondary cross-sectional study. Read More

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http://dx.doi.org/10.1007/s10067-020-05165-6DOI Listing

[Alignment techniques for implantation of a total knee endoprosthesis with particular focus on kinematic alignment].

Orthopade 2020 Jun 4. Epub 2020 Jun 4.

Centre de l'arthrose, Clinique du Sport, Mérignac, Frankreich.

Background: This review introduces various techniques for implantation of a total knee endoprosthesis and scrutinizes the "mechanical alignment" of a total knee endoprosthesis, whereby the various alignment concepts are examined. In particular, kinematic alignment, in terms of its significance, the individual steps of the implantation technique and the data collected, will be examined in more detail.

Methods: Improvement in the clinical results after implantation of a total knee endoprosthesis can be achieved by a personalized, individualized, physiological implantation that respects the unique anatomical characteristics of each patient. Read More

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http://dx.doi.org/10.1007/s00132-020-03930-8DOI Listing

Tanshinone IIA Suppresses Proliferation and Inflammatory Cytokine Production of Synovial Fibroblasts from Rheumatoid Arthritis Patients Induced by TNF-α and Attenuates the Inflammatory Response in AIA Mice.

Front Pharmacol 2020 15;11:568. Epub 2020 May 15.

Department of Rheumatology and Clinical Immunology, Zhujiang Hospital, Southern Medical University, Guangzhou, China.

Rheumatoid arthritis (RA) is a chronic and progressive autoimmune disease in which activated RA fibroblast-1ike synoviocytes (RA-FLSs) are one of the main factors responsible for inducing morbidity. Previous reports have shown that RA-FLSs have proliferative features similar to cancer cells, in addition to causing cartilage erosion that eventually causes joint damage. Thus, new therapeutic strategies and drugs that can effectively contain the abnormal hyperplasia of RA-FLSs and restrain RA development are necessary for the treatment of RA. Read More

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http://dx.doi.org/10.3389/fphar.2020.00568DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7243269PMC

Ultrasound measurement of femoral cartilage thickness in the knee of healthy young university students.

Rev Esp Cir Ortop Traumatol 2020 Jun 1. Epub 2020 Jun 1.

Departamento de Reumatología, Hospital Universitario Ramón y Cajal, Madrid, España.

Background And Objective: Articular cartilage (AC) is always affected in any joint with osteoarthritis. Ultrasound can be a useful tool in monitoring changes in the AC. The purpose of the present study is to ultrasound measure the thickness of the AC in the distal femur in young students and determine its relationship with body mass index (BMI), muscle mass, body fat and sports practice. Read More

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http://dx.doi.org/10.1016/j.recot.2020.04.001DOI Listing

Social Determinants of Health and Patient-Reported Outcomes Following Total Hip and Knee Arthroplasty in Veterans.

J Arthroplasty 2020 May 6. Epub 2020 May 6.

Department of Orthopaedic Surgery, University of California, San Francisco, CA; Orthopedic Surgery Section, San Francisco Veterans Affairs Health Care System, San Francisco, CA.

Background: Social determinants of health (SDOH) are the conditions in which people are born, grow, live, work, and age. They are associated with disparities in outcomes following total joint arthroplasty (TJA). These disparities occur even in equal-access healthcare systems such as the Veterans Health Administration (VHA). Read More

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http://dx.doi.org/10.1016/j.arth.2020.04.095DOI Listing

[Diagnostic value of D-dimer for chronic periprosthetic infection after hip and knee joint replacement].

Zhonghua Wai Ke Za Zhi 2020 Jun;58(6):464-468

School of Public Health, Xinjiang Medical University, Urumqi 830011, China.

To investigate the diagnose value of D-dimer for chronic periprosthetic infection (PJI) after hip and knee arthroplasty. A retrospective analyze was conducted on 168 patients underwent revision arthroplasty and primary arthroplasty at the First Affiliated Hospital of Xinjiang Medical University from November 2017 to December 2018.There were 58 males and 110 females, aged(58. Read More

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http://dx.doi.org/10.3760/cma.j.cn112139-20191106-00550DOI Listing

[Early clinical effects of total knee arthroplasty with kinematic alignment assisted by patient-specific instrumentation].

Zhonghua Wai Ke Za Zhi 2020 Jun;58(6):457-463

Center of Diagnosis and Treatment for Joint Disease, Beijing Charity Hospital, Capital Medical University, Beijing 100068, China.

To examine the clinical effects of the treatment of knee osteoarthritis patients with kinematic alignment technique of total knee replacement (KA-TKA) assisted by patient-specific instrumentation (PSI). The clinical data of 14 patients with knee osteoarthritis treated with unilateral KA-TKA assisted by PSI at Department of Orthopaedic Surgery, Beijing Chaoyang Hospital Affiliated to Capital Medical University from May 2018 to August 2019 were analyzed retrospectively. There were 6 males and 8 females, aged 66. Read More

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http://dx.doi.org/10.3760/cma.j.cn112139-20200103-00007DOI Listing

[Comparison of the early efficacy of unicompartmental and total knee arthroplasty in patients with medial compartmental osteoarthritis of the knee: a propensity score matching study].

Zhonghua Wai Ke Za Zhi 2020 Jun;58(6):452-456

Department of Joint Surgery, Peking University People's Hospital, Beijing 100044, China (Guan Zhenpeng is working at the Department of Orthopaedics, Peking University Shougang Hospital, Beijing 100144, China).

To compare the short-term efficacy of unicompartmental knee arthroplasty (UKA) and total knee arthroplasty(TKA) in the treatment of medial compartmental knee osteoarthritis. A retrospective analysis was performed on 197 patients with medial compartment osteoarthritis of the knee treated by the same group of doctors from January 2015 to December 2018.There were 86 males and 111 females, aged (67. Read More

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http://dx.doi.org/10.3760/cma.j.cn112139-20200322-00244DOI Listing

[The influence of patellofemoral joint degeneration on outcome of Oxford medial unicompartmental knee arthroplasty].

Zhonghua Wai Ke Za Zhi 2020 Jun;58(6):441-446

Department of Orthopaedic Surgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China.

To explore the influence of lateral patellofemoral joint degeneration on the treatment of anteromedial osteoarthritis of knee joint by Oxford medial unicompartmental knee arthroplasty. The clinical data of 73 patients (73 knees) with knee osteoarthritis underwent unicompartmental knee arthroplasty at Department of Orthopaedic Surgery, Xuanwu Hospital, Capital Medical University from March 2016 to December 2017 were analysed respectively.There were 18 males and 55 females, aged (68. Read More

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http://dx.doi.org/10.3760/cma.j.cn112139-20200220-00106DOI Listing

[The past, present and future of the control of axial alignment of the lower extremity in high tibial osteotomy].

Authors:
P L Liu S L Li

Zhonghua Wai Ke Za Zhi 2020 Jun;58(6):425-429

Department of Joint Surgery and Sport Medicine, Shandong University Qilu Hospital, Jinan 250012, China.

High tibial osteotomy(HTO) is an effective method for the treatment of knee osteoarthritis by transferring the weight bearing line to the lateral tibial plateau, which can significantly reduce the pressure and cartilage lesion of medial knee compartment.However, under- and over-correction of weight bearing line can lead to early postoperative failure.It is necessary to define the standard of axis correction, make correct preoperative plan, ensure the accuracy of operation and consider the risk factors of under- and over-correction of axis. Read More

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http://dx.doi.org/10.3760/cma.j.cn112139-20200220-00108DOI Listing

[Deep learning indications for high tibial osteotomy].

Zhonghua Wai Ke Za Zhi 2020 Jun;58(6):420-424

Department of Orthopaedic Surgery, Beijing Jishuitan Hospital, Beijing 100035, China.

High tibial osteotomy (HTO) is an effective treatment for knee osteoarthritis. With the application of bi-planer open wedge osteotomy high tibial osteotomy and new angular stable locking plates, HTO has become more accuracy, minimally invasive and standard, achieved satisfactory long-term treatment outcome. The indications of HTO are expanding. Read More

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http://dx.doi.org/10.3760/cma.j.cn112139-20200228-00149DOI Listing

Reliability of Kinovea Software and Agreement with a Three-Dimensional Motion System for Gait Analysis in Healthy Subjects.

Sensors (Basel) 2020 Jun 2;20(11). Epub 2020 Jun 2.

Motion Analysis, Ergonomics, Biomechanics and Motor Control Laboratory (LAMBECOM), Department of Physical Therapy, Occupational Therapy, Rehabilitation and Physical Medicine, Faculty of Health Sciences, Universidad Rey Juan Carlos, 28922 Madrid, Spain.

Gait analysis is necessary to diagnose movement disorders. In order to reduce the costs of three-dimensional motion capture systems, new low-cost methods of motion analysis have been developed. The purpose of this study was to evaluate the inter- and intra-rater reliability of Kinovea and the agreement with a three-dimensional motion system for detecting the joint angles of the hip, knee and ankle during the initial contact phase of walking. Read More

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http://dx.doi.org/10.3390/s20113154DOI Listing

Skeletal Muscle Gene Expression in Long-Term Endurance and Resistance Trained Elderly.

Int J Mol Sci 2020 Jun 2;21(11). Epub 2020 Jun 2.

Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna School of Medicine, 40138 Bologna, Italy.

Physical exercise is deemed the most efficient way of counteracting the age-related decline of skeletal muscle. Here we report a transcriptional study by next-generation sequencing of vastus lateralis biopsies from elderly with a life-long high-level training practice ( = 9) and from age-matched sedentary subjects ( = 5). Unsupervised mixture distribution analysis was able to correctly categorize trained and untrained subjects, whereas it failed to discriminate between individuals who underwent a prevalent endurance ( = 5) or a prevalent resistance ( = 4) training, thus showing that the training mode was not relevant for sarcopenia prevention. Read More

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http://dx.doi.org/10.3390/ijms21113988DOI Listing

Suppression of knee joint osteoarthritis induced secondary to type 2 diabetes mellitus in rats by resveratrol: role of glycated haemoglobin and hyperlipidaemia and biomarkers of inflammation and oxidative stress.

Arch Physiol Biochem 2020 Jun 4:1-8. Epub 2020 Jun 4.

Department of Basic Medical Sciences, College of Medicine, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia.

We investigated whether the anti-inflammatory and antioxidant agent, resveratrol can inhibit type 2 diabetes mellitus (T2DM)-induced osteoarthritis (OA) in rats and whether it is associated with the suppression of glycaemia, dyslipidemia and inflammatory and oxidative stress biomarkers. T2DM was induced by streptozotocin (50 mg/kg body weight) and high carbohydrate and fat diet (HCFD). The protective group was put on resveratrol (30 mg/kg) 14 days prior to the induction of diabetes and continued on resveratrol and HCFD until being sacrificed at week 12. Read More

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http://dx.doi.org/10.1080/13813455.2020.1771378DOI Listing

Changes in Knee Adduction Moment Wearing a Variable-Stiffness Shoe Correlate with Changes in Pain and Mechanically-Stimulated Cartilage Oligomeric Matrix Levels.

J Orthop Res 2020 Jun 4. Epub 2020 Jun 4.

Stanford University, Stanford, CA.

This study aimed to determine if changes in knee adduction moment (KAM) after 6 months of variable-stiffness shoe wear are associated with changes in symptoms or serum levels of cartilage oligomeric matrix protein (COMP) following a mechanical stimulus in subjects with medial knee osteoarthritis. Twenty-five subjects were enrolled in the study and assigned a variable-stiffness shoe, and 19 subjects completed 6-month follow-up. At baseline and follow-up subjects underwent gait analysis in control and variable-stiffness shoes, completed Western Ontario and McMaster Universities (WOMAC) questionnaires, and serum COMP concentrations were measured immediately before, 3. Read More

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http://dx.doi.org/10.1002/jor.24770DOI Listing

The Influence of Prolonged Running and Footwear on Lower Extremity Joint Stiffness.

Med Sci Sports Exerc 2020 Jun 1. Epub 2020 Jun 1.

Biomechanics Laboratory, University of Massachusetts, Amherst, MA.

Introduction: The purpose of this study was to compare leg, sagittal plane knee and ankle and and frontal plane ankle stiffness over the course of a prolonged treadmill run in neutral and stability footwear.

Methods: Thirteen male habitual rearfoot runners completed two biomechanical testing sessions in which they ran for 21 minutes at their preferred running speed in a neutral shoe, then changed either into the same neutral shoe or a stability shoe and ran a further 21 minutes on a force instrumented treadmill. Three-dimensional kinematics and kinetics were recorded at the beginning and end of each 21-minute interval. Read More

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http://dx.doi.org/10.1249/MSS.0000000000002416DOI Listing

Scoring Patient Outcomes No Matter How We Ask Them: Commentary on an article by Breanna A. Polascik, BS, et al.: "Crosswalks Between Knee and Hip Arthroplasty Short Forms. HOOS/KOOS JR and Oxford".

J Bone Joint Surg Am 2020 Jun;102(11):e55

Division of Orthopedic Surgery, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada.

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http://dx.doi.org/10.2106/JBJS.20.00249DOI Listing

[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

[Adjusted mechanical alignment: operative technique-Tips and tricks].

Orthopade 2020 Jun 3. Epub 2020 Jun 3.

AMR Advanced Medical Research GmbH, Hofenstrasse 89b, 8708, Männedorf, Schweiz.

Introduction: Mechanical alignment (MA) is a standardized procedure that aims to achieve a neutrally aligned leg axis. An alignment of the prosthesis closer to the patient's anatomy can be an approach for better clinical outcomes. The surgical technique of adjusted mechanical alignment (aMA) presented here is a modified extension-gap-first technique that takes into account the natural ligamentous tension of the knee joint so that ligamentous releases can be avoided as far as possible. Read More

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http://dx.doi.org/10.1007/s00132-020-03929-1DOI Listing

Evaluating the effects of a total joint education class on patient outcomes.

Authors:
Kevin Marshall

J Orthop 2020 Jul-Aug;20:305-309. Epub 2020 Mar 26.

116 Nursery Ridge Lane, Columbia, SC, 29212, USA.

As the population ages and as people live longer, there is a growing demand for total hip and total knee procedures. Possible outcomes for these procedures is a postoperative joint infection (PJI) that can cause long postoperative lengths of stay (LOS) in the hospital. The PJIs can also negatively impact the quality of life for the patient. Read More

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http://dx.doi.org/10.1016/j.jor.2020.03.002DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7261956PMC

Thermogenic diagnosis of periprosthetic joint infection by microcalorimetry of synovial fluid.

BMC Musculoskelet Disord 2020 Jun 3;21(1):345. Epub 2020 Jun 3.

Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Center for Musculoskeletal Surgery (CMSC), Charitéplatz 1, D-10117, Berlin, Germany.

Background: Synovial fluid culture is the standard investigation for the preoperative diagnosis of periprosthetic joint infection (PJI). However, the culture has limited sensitivity and requires several days until result. We evaluated the value of isothermal microcalorimetry for real-time diagnosis of PJI based on heat produced by microbial growth in synovial fluid. Read More

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http://dx.doi.org/10.1186/s12891-020-03366-3DOI Listing

Over 20 years of chronic patellar ligament rupture with severe knee osteoarthritis for Total knee Arthroplasty: a case report.

BMC Musculoskelet Disord 2020 Jun 3;21(1):342. Epub 2020 Jun 3.

Department of Nephrology, The Jianli people's hospital, No.55 Jiang Cheng Road, Jianli County, Jingzhou, 430022, Hubei Province, China.

Background: Extensor apparatus rupture is a severe complication after knee arthroplasty, but there have not been many reports on how to perform knee arthroplasty after chronic patellar ligament rupture. We reported a case of total knee arthroplasty (TKA) in a patient with severe osteoarthritis (OA) complicated by chronic patellar ligament rupture.

Case Presentation: In this case, a 67-year-old male patient suffered from patellar ligament rupture due to trauma more than 20 years ago and did not undergo any formal treatment. Read More

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http://dx.doi.org/10.1186/s12891-020-03374-3DOI Listing

Which Are the Key Kinematic and Kinetic Components to Distinguish Recovery Strategies for Overground Slips Among Community-Dwelling Older Adults?

J Appl Biomech 2020 Jun 3:1-11. Epub 2020 Jun 3.

University of Illinois at Chicago.

Slip outcomes are categorized as either a backward loss of balance (LOB) or a no loss of balance (no-LOB) in which an individual does not take a backward step to regain their stability. LOB includes falls and nonfalls, while no-LOB includes skate overs and walkovers. Researchers are uncertain about which factors determine slip outcomes and at which critical instants they do so. Read More

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http://dx.doi.org/10.1123/jab.2019-0285DOI Listing

Trajectories of Structural Disease Progression in Knee Osteoarthritis.

Arthritis Care Res (Hoboken) 2020 Jun 3. Epub 2020 Jun 3.

Orthopaedic and Arthritis Center for Outcomes Research (OrACORe) and Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, Massachusetts, United States of America.

Objective: Knee osteoarthritis (OA) is a heterogeneous disease, with most patients experiencing slow disease progression and some with rapid deterioration. We aimed to identify groups of persons with symptomatic knee OA experiencing rapid structural progression.

Methods: We selected participants from the Osteoarthritis Initiative with baseline (BL) Kellgren-Lawrence (KL) grade 1 - 3, knee pain, and with joint space width (JSW) on fixed-flexion knee radiographs assessed at BL and ≥1 follow-up over 8 years. Read More

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http://dx.doi.org/10.1002/acr.24340DOI Listing

Joint needle aspiration compared to tissue samples in septic arthritis of the native knee.

Acta Orthop Belg 2020 Mar;86(1):64-68

Culture of the causative infectious agent is the only definitive method of diagnosing septic arthritis and can be identified by culture of synovial fluid (SF) or by tissue cultures (TC) obtained at surgery. The aim of this study is to compare the cultures of joint needle aspiration (JNA) with tissue cultures obtained at surgery. 52 patients treated for a suspicion of a septic arthritis of the native knee were retrospectively reviewed. Read More

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Investigation of the changing etiology and risk factors of prosthetic joint infections : a university hospital surveillance study from 2011-2017.

Acta Orthop Belg 2020 Mar;86(1):54-63

We sought to characterize the causative pathogens of prosthetic joint infections (PJIs), evaluate the trends in microbial etiologies, and identify potential risk factors for PJI. This was a retrospective study analyzing 70 patients with PJI following 3,253 total joint arthroplasties between 2011 and 2017. Staphylococci were the most common cause of infection (52. Read More

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Long-term outcome of prosthetic joint infections treated with two-stage revision.

Acta Orthop Belg 2020 Mar;86(1):10-16

Long-term evaluation of prosthetic joint infection treated with two-stage revision. Retrospective analysis of 102 periprosthetic infections treated with two-stage revision from 2010 to 2012 in Albenga hospital, Italy. During the second stage, samples for microbiological tests were collected. Read More

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Nonuniform distribution of passive muscle stiffness within hamstring.

Scand J Med Sci Sports 2020 Jun 3. Epub 2020 Jun 3.

National Institute of Fitness and Sports in Kanoya, Kagoshima, Japan.

Limited information is available on whether stiffness is different within and between the constituents of the hamstring, i.e., the biceps femoris long head (BFlh), semitendinosus (ST), and semimembranosus (SM). Read More

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http://dx.doi.org/10.1111/sms.13732DOI Listing

Clinical Outcomes After Medial Patellofemoral Ligament Reconstruction Using Transosseous Sutures Versus Suture Anchors: A Prospective Nonrandomized Controlled Trial.

Orthop J Sports Med 2020 May 4;8(5):2325967120917112. Epub 2020 May 4.

Department of Orthopedics, Joint Surgery, and Sports Medicine, First Affiliated Hospital of China Medical University, Shenyang, China.

Background: Patellar instability remains a challenging problem for orthopaedic surgeons. Recurrent patellar instability is traditionally treated with medial patellofemoral ligament (MPFL) reconstruction using a suture anchor or bone tunnel technique. Although the use of transosseous sutures was recently described for MPFL reconstruction, relevant clinical data have not been reported. Read More

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http://dx.doi.org/10.1177/2325967120917112DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7238809PMC

An analysis of the interactions between the spine, pelvis, and lower limbs in asymptomatic adults with limited pelvic compensation.

Quant Imaging Med Surg 2020 May;10(5):999-1007

Department of Spine Surgery, Nanjing Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China.

Background: The interactions between the spine, pelvis, and lower limbs are dynamic based on the "cone of economy" concept; thus, different global radiographic parameters could be regarded as reflections of different centers of gravity. We conducted this retrospective study to evaluate the offsets of different centers of gravity in asymptomatic populations and to investigate how the global sagittal alignment is supported.

Methods: The following parameters were measured: cervical lordosis, thoracic kyphosis (TK), lumbar lordosis (LL), pelvic incidence (PI), pelvic tilt (PT), the ratio between PT and PI (PT/PI), sacral slope, PI minus LL (PI-LL), the sagittal vertical axis (SVA), cranial SVA to ankle center (Cr-A), CrSVA to the femoral head center (Cr-FH), C2SVA to the femoral head center (C2-FH), pelvic translation (P. Read More

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http://dx.doi.org/10.21037/qims-19-785DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7242303PMC

A measurement method of knee joint space width by ultrasound: a large multicenter study.

Quant Imaging Med Surg 2020 May;10(5):979-987

Department of Ultrasound, the Second Affiliated Hospital of Harbin Medical University, Harbin 150001, China.

Background: Although plain radiology is the primary method for assessing joint space width (JSW), it has poor sensitivity to change over time in regards to determining longitudinal progression. We, therefore, developed a new ultrasound (US) measurement method of knee JSW and aimed to provide a monitoring method for the change of JSW in the future.

Methods: A multicenter study was promoted by the Professional Committee of Musculoskeletal Ultrasound, the Ultrasound Society, and the Chinese Medical Doctor Association. Read More

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http://dx.doi.org/10.21037/qims-20-373DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7242315PMC

Antibiotic containing bone cement in prevention of hip and knee prosthetic joint infections: A systematic review and meta-analysis.

J Orthop Translat 2020 Jul 8;23:53-60. Epub 2020 May 8.

Lund University, Faculty of Medicine, Department of Clinical Sciences Lund, Orthopedics, Lund, Sweden.

Background: Prosthetic joint infection (PJI) is the most serious total joint arthroplasty (TJA) complication despite several aseptic and antiseptic preventive measures. There is no clear evidence or even consensus, whether antibiotic-loaded bone cement (ALBC) should be used, in addition to systemic short-term routine antibiotic prophylaxis, to reduce the risk of PJI in primary TJA. We aimed to analyze the efficacy of ALBC for prevention of PJI in patients undergoing primary TJA. Read More

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http://dx.doi.org/10.1016/j.jot.2020.04.005DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7256060PMC

Partial Medial Meniscectomy Using Needle Arthroscopy and a Standardized Local Anesthetic Protocol.

Arthrosc Tech 2020 May 22;9(5):e593-e598. Epub 2020 May 22.

Kansas City University, Kansas City, Missouri, U.S.A.

Needle arthroscopic procedures of the knee offer potential advantages over standard arthroscopic procedures. The small size of the instruments allows for surgery without the use of a scalpel or suture, potentially decreased recovery times, and potentially reduced complication rates compared with traditional arthroscopy. In some patients, the procedure can be performed without the use of either general anesthesia or sedation. Read More

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http://dx.doi.org/10.1016/j.eats.2020.01.010DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7253716PMC

Hoffa's Fracture with Associated Injuries Around the Knee Joint: An Approach to a Rare Injury.

Cureus 2020 Apr 28;12(4):e7865. Epub 2020 Apr 28.

Orthopedics, Maharishi Markandeshwar (deemed to be University), Ambala, IND.

Fractures of the distal femur typically occur in the axial and sagittal planes. A Hoffa fracture is a coronal plane fracture of the femoral condyle, which accounts for 8.7% to 13% of distal femoral fractures. Read More

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http://dx.doi.org/10.7759/cureus.7865DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7255537PMC

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

Anthropometry of Nonarthritic Asian Knees: Is It Time for a Race-Specific Knee Implant?

Clin Orthop Surg 2020 Jun 14;12(2):158-165. Epub 2020 May 14.

Department of Orthopaedics, Sir HN Reliance Foundation Hospital and Research Center, Mumbai, India.

Background: This study was done to study the anthropometry of nonarthritic Asian knees; to determine the differences in morphology between knees of different ethnicities and to compare the knee anthropometry values with sizes of available knee implants.

Methods: Magnetic resonance imaging scans of 100 nonarthritic Indian knees were analyzed. Anteroposterior (AP) length, mediolateral (ML) length, and aspect ratio of the distal femur and proximal tibia, patellar length, and patellar tendon length were measured. Read More

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http://dx.doi.org/10.4055/cios19069DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7237262PMC

Kinematic aligned femoral rotation leads to greater patella tilt but similar clinical outcomes when compared to traditional femoral component rotation in total knee arthroplasty. A propensity score matched study.

Knee Surg Sports Traumatol Arthrosc 2020 Jun 1. Epub 2020 Jun 1.

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

Purpose: External rotation of femoral component in total knee arthroplasty (TKA) with reference to the posterior condyles is recommended in mechanical alignment (MA) to ensure optimum patella tracking. In kinematic knee alignment (KA) technique, femoral component is more internally rotated as the femoral resection is based on flexion-extension axis. This study aims to investigate the clinical and radiological outcomes of the patellofemoral joint in patients who underwent TKA using KA versus mechanical alignment. Read More

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http://dx.doi.org/10.1007/s00167-020-06081-7DOI Listing