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https://www.readbyqxmd.com/read/28227706/skin-mounted-accelerometer-system-for-measuring-knee-range-of-motion
#1
Ryan S McGinnis, Shyamal Patel, Ikaro Silva, Nikhil Mahadevan, Steve DiCristofaro, Elise Jortberg, Melissa Ceruolo, A J Aranyosi, Ryan S McGinnis, Shyamal Patel, Ikaro Silva, Nikhil Mahadevan, Steve DiCristofaro, Elise Jortberg, Melissa Ceruolo, A J Aranyosi, A J Aranyosi, Melissa Ceruolo, Ikaro Silva, Steve DiCristofaro, Elise Jortberg, Ryan S McGinnis, Shyamal Patel, Nikhil Mahadevan
Sufficient range of motion of the knee joint is necessary for performing many activities of daily living. Ambulatory monitoring of knee function can provide valuable information about progression of diseases like knee osteoarthritis and recovery after surgical interventions like total knee arthroplasty. In this paper, we describe a skin-mounted, conformal, accelerometer-based system for measuring knee angle and range of motion that does not require a skilled operator to apply devices. We establish the accuracy of this technique with respect to clinical gold standard goniometric measurements on a dataset collected from normative subjects during the performance of repeated bouts of knee flexion and extension tests...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226218/assessing-cartilage-biomechanical-properties-techniques-for-evaluating-the-functional-performance-of-cartilage-in-health-and-disease
#2
Benjamin A Lakin, Brian D Snyder, Mark W Grinstaff
Osteoarthritis (OA) affects millions of people and results in weakened hyaline cartilage due to overloading. During joint articulation, hyaline cartilage must withstand high loads while maintaining low friction to prevent wear and tissue loss. Thus, cartilage compressive stiffness and the coefficient of friction are important indicators of the tissue's functional performance. These mechanical properties are often measured ex vivo using mechanical testing regimens, but arthroscopic handheld probes (e.g., for indentation testing, ultrasound, and optical coherence tomography) and noninvasive imaging modalities (e...
February 2, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28224443/report-of-the-clinical-and-functional-primary-outcomes-in-men-of-the-acl-sports-trial-similar-outcomes-in-men-receiving-secondary-prevention-with-and-without-perturbation-training-1-and-2-years-after-acl-reconstruction
#3
Amelia J H Arundale, Kathleen Cummer, Jacob J Capin, Ryan Zarzycki, Lynn Snyder-Mackler
BACKGROUND: Athletes often are cleared to return to activities 6 months after anterior cruciate ligament (ACL) reconstruction; however, knee function measures continue to improve up to 2 years after surgery. Interventions beyond standard care may facilitate successful return to preinjury activities and improve functional outcomes. Perturbation training has been used in nonoperative ACL injury and preoperative ACL reconstruction rehabilitation, but has not been examined in postoperative ACL reconstruction rehabilitation, specifically return to sport rehabilitation...
February 21, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28224442/report-of-the-primary-outcomes-for-gait-mechanics-in-men-of-the-acl-sports-trial-secondary-prevention-with-and-without-perturbation-training-does-not-restore-gait-symmetry-in-men-1-or-2-years-after-acl-reconstruction
#4
Jacob John Capin, Ryan Zarzycki, Amelia Arundale, Kathleen Cummer, Lynn Snyder-Mackler
BACKGROUND: Movement asymmetries during walking are common after anterior cruciate ligament (ACL) injury and reconstruction and may influence the early development of posttraumatic osteoarthritis. Preoperative neuromuscular training (like perturbation training, which is neuromuscular training requiring selective muscle activation in response to surface perturbations) improves gait asymmetries and functional outcomes among people who are ACL-deficient, but the effect of postoperative perturbation training on gait mechanics after ACL reconstruction is unknown...
February 21, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28223749/digital-mucous-cyst-a-clinical-surgical-study
#5
Eun Jung Kim, Joon Won Huh, Hyang-Joon Park
BACKGROUND: It has been suggested digital mucous cysts (DMCs) are associated with osteoarthritis and osteophytes in the elderly, and usually have a communicating pedicle with the joint. Surgical excision is a standard therapy with a high cure rate. OBJECTIVE: The purpose of this prospective study is to evaluate the features of DMCs via clinical, radiological and pathological examination and the efficacy of surgical excision of DMCs. METHODS: Between 2010 and 2014, 24 Korean patients were treated with the resection of the cyst and the pedicle...
February 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28220190/open-wedge-high-tibial-osteotomy-versus-unicompartmental-knee-arthroplasty-no-difference-in-progression-of-patellofemoral-joint-arthritis
#6
Kwang-Jun Oh, Young Chan Kim, Jong Seong Lee, Yong Suk Chang, Gautam M Shetty, Kyung Wook Nha
PURPOSE: The purpose of this retrospective comparative study was to evaluate and compare, radiographically and clinically, progression of osteoarthritis (OA) in the patellofemoral (PF) compartment after open-wedge high tibial osteotomy (OWHTO), and unicompartmental knee arthroplasty (UKA) over a minimum follow-up of 5 years. METHODS: In this study, 42 knees in an OWHTO group were compared with 59 knees in a UKA group in terms of radiographic parameters, such as the grading system for OA progression in the PF compartment, and clinical parameters, such as the PF pain and function scores over a minimum follow-up of 5 years...
February 20, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28219088/single-bundle-versus-double-bundle-anterior-cruciate-ligament-reconstruction-a-prospective-randomized-controlled-trial-with-6-year-follow-up
#7
Paolo Adravanti, Francesco Dini, Laura de Girolamo, Massimo Cattani, Michele Attilio Rosa
Single-bundle (SB) anterior cruciate ligament (ACL) reconstruction is increasingly used in a large number of patients and it allows obtaining very good clinical and subjective results; however, functional tests show a persistent rotational instability. Biomechanical studies seem to indicate that double-bundle (DB) ACL reconstruction allows to obtain increased anterior and rotational stability compared with SB. The aim of this prospective randomized controlled study was to compare the clinical outcome and the possible osteoarthritic evolution of patients treated either with a SB (freehand transtibial femoral tunnel) or with a DB technique (outside-in for posterolateral femoral tunnel/inside-out for anteromedial femoral tunnel) at a final follow-up of 6 years...
February 20, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28218386/glucose-adsorption-to-chitosan-membranes-increases-proliferation-of-human-chondrocyte-via-mammalian-target-of-rapamycin-complex-1-and-sterol-regulatory-element-binding-protein-1-signaling
#8
Shun-Fu Chang, Kuo-Chin Huang, Chin-Chang Cheng, Yu-Ping Su, Ko-Chao Lee, Cheng-Nan Chen, Hsin-I Chang
BACKGROUND: Osteoarthritis (OA) is currently still an irreversible degenerative disease of the articular cartilage. Recent, dextrose (D-glucose) intraarticular injection prolotherapy for OA patients has been reported to benefit the chondrogenic stimulation of damaged cartilage. However, the detailed mechanism of glucose's effect on cartilage repair remains unclear. Chitosan, a naturally derived polysaccharide, has recently been investigated as a surgical or dental dressing to control breeding...
February 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28218373/the-use-of-polycarbonate-urethane-as-an-acetabular-shell-bearing-surface-a-5-year-prospective-study
#9
Sabine Mai, Burkhard Mai, Werner E Siebert
AIM: To evaluate the clinical performance of a polycarbonate-urethane liner as a bearing material inside a cobalt-chrome acetabular shell. METHODS: Between December 2007 and July 2011, this material combination was used in 27 total hip replacement patients, most of whom had an indication of osteoarthritis. This report focuses on the first 5-year results of the clinical use of this material combination in the TriboFit® Hip System. RESULTS: Mean Harris Hip Score showed significant improvement from 40 to 86 after 5 years, similar to studies in the literature...
February 8, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28217864/-sounds-a-bit-crazy-but-it-was-almost-more-personal-a-qualitative-study-of-patient-and-clinician-experiences-of-physical-therapist-prescribed-exercise-for-knee-osteoarthritis-via-skype%C3%A2
#10
R S Hinman, R K Nelligan, K L Bennell, C Delany
OBJECTIVES: Explore patients' and physical therapists' experience with Skype™ for exercise management of knee OA. METHODS: Qualitative study. The Donabedian model for quality assessment in health care (structure, process and outcomes) informed semi-structured individual interview questions. Twelve purposively-sampled patients with knee OA who received physical therapist-prescribed exercise over Skype™, and all therapists (n=8) who delivered the intervention, in a clinical trial were interviewed about their experiences...
February 19, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28216747/complex-ao-type-c3-distal-femur-fractures-results-after-fixation-with-a-lateral-locked-plate-using-modified-swashbuckler-approach
#11
Anuj Agrawal, Vivek Kiyawat
BACKGROUND: Complex AO type C3 fractures of the distal femur are challenging injuries, fraught with complications such as malunion and stiffness. We prospectively evaluated a consecutive series of patients with complex AO type C3 distal femur fractures to determine the clinicoradiological outcome after fixation with a single locked plate using modified swashbuckler approach. MATERIALS AND METHODS: 12 patients with C3 type distal femur fractures treated with a lateral locked plate, using a modified swashbuckler approach, were included in the study...
January 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28216313/between-group-differences-in-infra-patellar-fat-pad-size-and-signal-in-symptomatic-and-radiographic-progression-of-knee-osteoarthritis-vs-non-progressive-controls-and-healthy-knees-data-from-the-fnih-biomarkers-consortium-study-and-the-osteoarthritis-initiative
#12
Anja Ruhdorfer, Franziska Haniel, Tobias Petersohn, Jan Dörrenberg, Wolfgang Wirth, Torben Dannhauer, David J Hunter, Felix Eckstein
OBJECTIVE: To examine cross-sectional and longitudinal between-group differences of infra-patellar fat pad (IPFP) size and magnetic resonance imaging (MRI) signal from fat-suppressed intermediate-weighted images with clinically relevant symptomatic and radiographic progression of knee osteoarthritis (OA), versus healthy references. METHODS: We studied 110 case knees (KLG1-3) with radiographic (≥0.7mm loss in joint space width) and symptomatic progression (≥+9/100units on the WOMAC knee pain subscale) vs...
February 12, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28216304/ankle-arthrodesis-a-retrospective-analysis-comparing-single-column-locked-anterior-plating-to-crossed-lag-screw-technique
#13
Mark A Prissel, G Alex Simpson, Sean A Sutphen, Christopher F Hyer, Gregory C Berlet
Ankle arthrodesis is performed to eliminate pain due to end-stage osteoarthritis, regardless of etiology. This procedure remains the reference standard treatment for end-stage ankle arthritis, despite recent advancements in total ankle replacement. The objective of the present study was to retrospectively evaluate the radiographic and clinical fusion rates and time to bony fusion for patients who underwent ankle arthrodesis using an anterior approach with a single column locked plate construct versus crossed lag screws...
February 16, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28214426/reduced-step-length-reduces-knee-joint-contact-forces-during-running-following-anterior-cruciate-ligament-reconstruction-but-does-not-alter-inter-limb-asymmetry
#14
Collin D Bowersock, Richard W Willy, Paul DeVita, John D Willson
BACKGROUND: Anterior cruciate ligament reconstruction is associated with early onset knee osteoarthritis. Running is a typical activity following this surgery, but elevated knee joint contact forces are thought to contribute to osteoarthritis degenerative processes. It is therefore clinically relevant to identify interventions to reduce contact forces during running among individuals after anterior cruciate ligament reconstruction. The primary purpose of this study was to evaluate the effect of reducing step length during running on patellofemoral and tibiofemoral joint contact forces among people with a history of anterior cruciate ligament reconstruction...
February 10, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28214084/il-10-and-tgf-%C3%AE-roles-in-chondroprotective-effects-of-glucosamine-in-experimental-osteoarthritis
#15
Nermien E Waly, Abeer Refaiy, Nora M Aborehab
OBJECTIVE: Osteoarthritis (OA) is a complex disease of the whole joint. Glucosamine (GlcN) treatment may have a chondroprotective effect on OA. We investigated the mechanism of action of glucosamine treatment through interleukin-10 (Il-10) and transforming growth factor β-1 (TGF β-1). METHODS: Thirty male albino rats were used. A single intraarticular (i.a.) injection of 2mg of Monosodium Iodoacetate (MIA) was injected into the knee joint of anesthetized rats...
February 11, 2017: Pathophysiology: the Official Journal of the International Society for Pathophysiology
https://www.readbyqxmd.com/read/28210788/surgical-management-of-degenerative-meniscus-lesions-the-2016-esska-meniscus-consensus
#16
Ph Beaufils, R Becker, S Kopf, M Englund, R Verdonk, M Ollivier, R Seil
PURPOSE: A degenerative meniscus lesion is a slowly developing process typically involving a horizontal cleavage in a middle-aged or older person. When the knee is symptomatic, arthroscopic partial meniscectomy has been practised for a long time with many case series reporting improved patient outcomes. Since 2002, several randomised clinical trials demonstrated no additional benefit of arthroscopic partial meniscectomy compared to non-operative treatment, sham surgery or sham arthroscopic partial meniscectomy...
February 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28210651/analysis-of-platelet-rich-plasma-extraction-variations-in-platelet-and-blood-components-between-4-common-commercial-kits
#17
Jane Fitzpatrick, Max K Bulsara, Paul Robert McCrory, Martin D Richardson, Ming Hao Zheng
BACKGROUND: Platelet-rich plasma (PRP) has been extensively used as a treatment in tissue healing in tendinopathy, muscle injury, and osteoarthritis. However, there is variation in methods of extraction, and this produces different types of PRP. PURPOSE: To determine the composition of PRP obtained from 4 commercial separation kits, which would allow assessment of current classification systems used in cross-study comparisons. STUDY DESIGN: Controlled laboratory study...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28209371/the-effect-of-patient-age-at-intervention-on-risk-of-implant-revision-after-total-replacement-of-the-hip-or-knee-a-population-based-cohort-study
#18
Lee E Bayliss, David Culliford, A Paul Monk, Sion Glyn-Jones, Daniel Prieto-Alhambra, Andrew Judge, Cyrus Cooper, Andrew J Carr, Nigel K Arden, David J Beard, Andrew J Price
BACKGROUND: Total joint replacements for end-stage osteoarthritis of the hip and knee are cost-effective and demonstrate significant clinical improvement. However, robust population based lifetime-risk data for implant revision are not available to aid patient decision making, which is a particular problem in young patient groups deciding on best-timing for surgery. METHODS: We did implant survival analysis on all patients within the Clinical Practice Research Datalink who had undergone total hip replacement or total knee replacement...
February 13, 2017: Lancet
https://www.readbyqxmd.com/read/28209276/the-aahks-clinical-research-award-what-are-the-costs-of-knee-osteoarthritis-in-the-year-prior-to-total-knee-arthroplasty
#19
Nicholas A Bedard, Spencer B Dowdle, Christopher A Anthony, David E DeMik, Michael A McHugh, Kevin J Bozic, John J Callaghan
BACKGROUND: Despite American Academy of Orthopaedic Surgeons Clinical Practice Guidelines (CPGs) related to the non-arthroplasty management of osteoarthritis (OA) of the knee, non-recommended treatments remain in common use. We sought to determine the costs associated with non-arthroplasty management of knee OA in the year prior to total knee arthroplasty (TKA) and stratify them by CPG recommendation status. METHODS: The Humana database was reviewed from 2007 to 2015 for primary TKA patients...
January 18, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28203583/how-are-we-measuring-patient-satisfaction-after-anterior-cruciate-ligament-reconstruction
#20
Cynthia A Kahlenberg, Benedict U Nwachukwu, Richard A Ferraro, William W Schairer, Michael E Steinhaus, Answorth A Allen
BACKGROUND: Reconstruction of the anterior cruciate ligament (ACL) is one of the most common orthopaedic operations in the United States. The long-term impact of ACL reconstruction is controversial, however, as longer term data have failed to demonstrate that ACL reconstruction helps alter the natural history of early onset osteoarthritis that occurs after ACL injury. There is significant interest in evaluating the value of ACL reconstruction surgeries. PURPOSE: To examine the quality of patient satisfaction reporting after ACL reconstruction surgery...
December 2016: Orthopaedic Journal of Sports Medicine
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