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https://www.readbyqxmd.com/read/28806840/changes-of-sagittal-and-axial-alignments-of-patella-after-open-and-closed-wedge-high-tibial-osteotomy-a-systematic-review-and-meta-analysis
#1
O-Sung Lee, Soyeon Ahn, Yong Seuk Lee
No abstract text is available yet for this article.
August 14, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28803113/how-a-decreased-fibrillar-interconnectivity-influences-stiffness-and-swelling-properties-during-early-cartilage-degeneration
#2
Mieke Nickien, Ashvin Thambyah, Neil D Broom
OBJECTIVE: The functional coupling between the fibrillar network and the high-swelling proteoglycans largely determines the mechanical properties of the articular cartilage matrix. The objective of this new study was to show specifically how changes in fibrillar interconnectivity arising from early cartilage degeneration influence transverse stiffness and swelling properties at the tissue level. DESIGN: Radial zone transverse layers of cartilage matrix were obtained from intact and mildly degenerate bovine patellae...
August 3, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28801826/brain-activity-changes-in-somatosensory-and-emotion-related-areas-with-medial-patellofemoral-ligament-deficiency
#3
Masaru Kadowaki, Taku Tadenuma, Nobuyuki Kumahashi, Yuji Uchio
BACKGROUND: Patellar instability with medial patellofemoral ligament (MPFL) deficiency is a common sports injury among young people. Although nonoperative and surgical treatment can provide stability of the patella, patients often have anxiety related to the knee. We speculate that neural dysfunction may be related to anxiety in these patients; however, the mechanism in the brain that generates this anxiety remains unknown. QUESTIONS/PURPOSES: (1) How does brain activity in patients with MPFL deficiency change in the areas related to somatic sensation against lateral shift of the patella? (2) How does patella instability, which can lead to continuous fear or apprehension for dislocation, influence brain activity in the areas related to emotion? METHODS: Nineteen patients with MPFL deficiency underwent surgical reconstruction in our hospital from April 2012 to March 2014...
August 11, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28796028/sleeve-fracture-of-the-adult-patella-case-report-and-review-of-the-literature
#4
Linjun Xie, Hong Xu, Lizhi Zhang, Rong Xu, Yingkun Guo
RATIONALE: The patellar fractures are common in adults, but rare in children. As a particular type of patellar fracture, however, sleeve fractures are almost always limited to children in the under 16's group. PATIENT CONCERNS: Herein, we report a rare case of a 19-year-old healthy adult female who presented sleeve fracture at the superior pole of the left patella. The clinical and radiological features are found including joint effusion, anterior tilt of the patella and a shell of bone lying proximally to the patella...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28795010/evaluation-and-management-of-knee-pain-in-young-athletes-overuse-injuries-of-the-knee
#5
REVIEW
Dilip R Patel, Ana Villalobos
Recurrent or chronic activity related knee pain is common in young athletes. Numerous intrinsic conditions affecting the knee can cause such pain. In addition, knee pain can be referred pain from low back, hip or pelvic pathology. The most common cause of knee pain in young athletes is patellofemoral pain syndrome, or more appropriately termed idiopathic anterior knee pain. Although, numerous anatomical and biomechanical factors have been postulated to contribute the knee pain in young athletes, the most common underlying reason is overuse injury...
July 2017: Translational pediatrics
https://www.readbyqxmd.com/read/28793979/outcome-of-prosthesis-matched-and-unmatched-patella-components-in-primary-and-revision-total-knee-replacement
#6
Peter L Lewis, Ai E Gamboa, David G Campbell, Michelle Lorimer
BACKGROUND: Although knee replacements have specifically designed patella prostheses that correspond to the geometry of their femoral components, a patella prosthesis that is unmatched to the femoral component may occasionally be inserted. In revision total knee arthroplasty (TKA), an originally resurfaced patella may be left, but the femoral component revised to one that does not match the patella. Few studies have compared the outcome of matched and unmatched patella components in TKA...
August 6, 2017: Knee
https://www.readbyqxmd.com/read/28789628/patellar-tendinopathy-in-young-elite-soccer-clinical-and-sonographical-analysis-of-a-german-elite-soccer-academy
#7
Gerrit Bode, Thorsten Hammer, N Karvouniaris, M J Feucht, L Konstantinidis, N P Südkamp, A Hirschmüller
BACKGROUND: The prevalence of patellar tendinopathy is elevated in elite soccer compared to less explosive sports. While the burden of training hours and load is comparably high in youth elite players (age < 23 years), little is known about the prevalence of patellar tendinopathy at this age. There is only little data available on the influence of age, the amount of training, the position on the field, as well as muscular strength, range of motion, or sonographical findings in this age group...
August 8, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28776631/diffuse-pigmented-villonodular-synovitis-as-a-rare-cause-of-graft-failure-following-anterior-cruciate-ligament-reconstruction
#8
Rajiv Rajani, Liliana Ogden, Christopher J Matthews, C Parker Gibbs
This case report describes a 42-year-old woman who was diagnosed with pigmented villonodular synovitis (PVNS) in the knee. The patient had received a bone-patella tendon-bone autograft reconstruction of her anterior cruciate ligament (ACL) 22 years prior to her diagnosis of PVNS. After a traumatic event that tore her ACL graft, she underwent a second surgery to repair the initial reconstruction. However, her pain and joint instability remained unresolved. When radiolucent lesions in her tibia and femur were identified through a radiographic image, the patient was referred to the authors' orthopedic oncology clinic...
August 3, 2017: Orthopedics
https://www.readbyqxmd.com/read/28768432/effects-of-surgical-factors-on-cartilage-can-be-detected-using-quantitative-magnetic-resonance-imaging-after-anterior-cruciate-ligament-reconstruction
#9
Keiko Amano, Alan K Li, Valentina Pedoia, Matthew F Koff, Aaron J Krych, Thomas M Link, Hollis Potter, Scott Rodeo, Xiaojuan Li, C Benjamin Ma, Sharmila Majumdar
BACKGROUND: Quantitative magnetic resonance (qMR) can be used to measure macromolecules in tissues and is a potential method of observing early cartilage changes in the development of posttraumatic osteoarthritis. Hypothesis/Purpose: We hypothesized that specific patient and surgical factors affecting cartilage matrix composition after anterior cruciate ligament (ACL) reconstruction (ACLR) can be detected using T1ρ and T2 relaxation times. Our purpose was to demonstrate this ability in a multicenter feasibility study...
April 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28760130/neglected-bilateral-congenital-dislocation-of-the-patella
#10
Mehmet Ali Tokgöz, Ali Turgay Çavuşoğlu, Tacettin Ayanoğlu, Tarık Elma, Abdurrahman Vural
Congenital dislocation of the patella is a disorder that presents with dysfunction in extensor mechanism. Although congenital dislocation of the patella mostly occurs in children with genetic disorders, it may also occur in totally healthy children, despite rarely. In this article, we report a 16-year-old male patient who referred to our clinic with complaints of gait disturbance, frequent falls, and muscular weakness in lower extremity. The patient had no complaints during walking, but had difficulty in running and walking up and down the stairs...
August 2017: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
https://www.readbyqxmd.com/read/28759646/local-cryotherapy-improves-adjuvant-induced-arthritis-through-down-regulation-of-il-6-il-17-pathway-but-independently-of-tnf%C3%AE
#11
Xavier Guillot, Hélène Martin, Stéphanie Seguin-Py, Katy Maguin-Gaté, Johnny Moretto, Perle Totoson, Daniel Wendling, Céline Demougeot, Nicolas Tordi
OBJECTIVES: Local cryotherapy is widely and empirically used in the adjuvant setting in rheumatoid arthritis treatment, however its own therapeutic and anti-inflammatory effects are poorly characterized. We aimed to evaluate the effects of local cryotherapy on local and systemic inflammation in Adjuvant-induced arthritis, a murine model of rheumatoid arthritis. METHODS: The effects of mild hypothermia (30°C for 2 hours) on cytokine protein levels (Multiplex/ELISA) were evaluated in vitro in cultured rat adjuvant-induced arthritis patellae...
2017: PloS One
https://www.readbyqxmd.com/read/28756566/pten-hamartoma-of-the-soft-tissue-the-initial-manifestation-of-an-underlying-pten-hamartoma-tumor-syndrome-in-a-4-year-old-female
#12
Charles B Chism, Lindsay Crawford, Amanda Tchakarov, Alyaa Al-Ibraheemi, Nicholas M Beckmann
A 4-year-old female was referred to pediatric orthopedic surgery for left leg pain and limping for 3 months following a motor vehicle collision. Recently, the patient's mother had noted left knee swelling and dragging of the left leg when walking. Past medical history was significant for hip dysplasia with slight leg length discrepancy. The patient was otherwise healthy. Physical examination was remarkable for left pre-patellar soft tissue fullness with normal range of motion. There was no warmth or tenderness...
July 29, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28752980/-ultrasonic-features-of-enthesitis-a-comparison-between-patients-with-psoriasis-vulgaris-and-patients-with-psoriatic-arthritis
#13
Yuan-Jiao Tang, Xi Xiang, Yu-Jia Yang, Li-Yun Wang, Ying He, Li Qiu
OBJECTIVE: To compare the ultrasonic features of enthesitis between psoriatic arthritis and psoriasis vulgaris. METHODS: A total of 39 patients with psoriatic arthritis (PsA group), 60 with psoriasis vulgaris (non-PsA group) and 60 healthy people (control group) participated in this study. They were examined by two-dimensional and color Doppler ultrasound on the entheses of bilateral femoral quadriceps tendons, patella tendons, Achilles tendons, plantar fasciae, common flexor tendons and common extensor tendons...
July 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28747231/different-patient-satisfaction-levels-between-the-first-and-second-knee-in-the-early-stage-after-simultaneous-bilateral-total-knee-arthroplasty-tka-a-comparison-between-subjective-and-objective-outcome-assessments
#14
Shuai Huang, Xing Li, Yubo Tang, Sunny Stiphan, Bin Yan, Peiheng He, Dongliang Xu
BACKGROUND: Simultaneous bilateral total knee arthroplasty (TKA) is an effective treatment option and safe for properly selected patients. The purpose of this study was to evaluate whether patients have different satisfaction levels between the first and second knee in the early stage after simultaneous bilateral TKA. METHODS: We retrospectively reviewed 46 patients who underwent simultaneous bilateral TKA by a single surgeon in our department between March 2013 and March 2015...
July 26, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28744079/evaluation-of-patella-alta-using-mri-measurements-in-adolescents
#15
Barış Yılmaz, Guzelali Ozdemir, Evrim Sirin, Esin D Cicek, Burcu S Anıl, Goncagul Bulbun
PURPOSE: To determine whether or not there were any differences in the measurement techniques used by orthopedic and radiology specialists in the evaluation of magnetic resonance (MR) images for the diagnosis of patella alta in adolescents. MATERIALS AND METHODS: Evaluations were performed by three orthopedic specialists (Group I) and three radiology specialists (Group II) regarding the presence of patella alta in 40 adolescents cases using the Insall-Salvati, Caton-Deschamps, Blackburne-Peel, and modified Insall-Salvati indices on MR images obtained to diagnose patellar instability...
April 2017: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/28743096/osteoarthritis-with-permanent-dislocation-of-the-patella-treated-by-total-knee-arthroplasty-through-a-lateral-approach-a-report-of-two-cases
#16
Shuichi Fujiwara, Takafumi Hiranaka, Yuichi Hida, Shigeru Matsuda, Harunobu Uemoto
INTRODUCTION: Permanent dislocation of the patella (PDP) is a rare condition. In cases of PDP with tibiofemoral arthritis, total knee arthroplasty may be performed through a medial parapatellar approach with patellar realignment. In this article we present two cases of PDP with tibiofemoral osteoarthritis successfully treated via lateral approach TKA without any additional realignment procedure. We performed two total knee arthroplasties for PDP with lateral tibiofemoral arthritis through a lateral approach without any realignment procedure...
July 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28741155/length-change-patterns-and-shape-of-a-grafted-tendon-after-anatomical-medial-patellofemoral-ligament-reconstruction-differs-from-that-in-a-healthy-knee
#17
Shuji Nakagawa, Yuji Arai, Hiroaki Inoue, Manabu Hino, Yuta Fujii, Shintaro Komaki, Kazuya Ikoma, Keiichiro Ueshima, Hiroyoshi Fujiwara, Toshikazu Kubo
PURPOSE: Recurrent patellar dislocation is currently treated with anatomical reconstruction of the medial patellofemoral ligament (MPFL), and favourable postoperative outcomes have been reported. However, it is uncertain if healthy MPFL function is restored by anatomical reconstruction. The hypothesis in this study was that stabilization of the patella following MPFL reconstruction would be improved compared with that before surgery, but that function of the grafted tendon would differ from that of a healthy MPFL...
July 24, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28734612/primary-total-knee-arthroplasty-how-does-residual-patellar-thickness-affect-patient-oriented-outcomes
#18
Jose C Alcerro, Mark D Rossi, Carlos J Lavernia
BACKGROUND: Maintenance of the native patellar thickness has been deemed important for proper clinical outcomes after total knee arthroplasty (TKA). Our objective was to study the effects of the change in patellar thickness on patient-perceived outcomes (PPOs) after TKA. We hypothesized that reestablishing native patellar thickness after TKA results in better PPOs. METHODS: 819 consecutive patients undergoing primary TKA were studied. Patients were classified according to their postoperative patellar thickness into: (1) less than native patella thickness; (2) equal to native patella thickness; and (3) greater than native patella thickness...
July 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28733109/reconstructing-the-chronically-disrupted-knee-extensor-mechanism-after-total-knee-arthroplasty-hourglass-variant-of-the-original-partial-allograft-technique
#19
C Fiquet, A Schneider, R Ballis, E Servien, P Neyret, S Lustig
Allograft reconstruction is a valuable treatment option for patients with chronic extensor mechanism disruption after total knee arthroplasty. Here, an hourglass variant of the original partial allografttechnique is described. An hourglass-shaped patellar bone block is press-fit into the native patella. The graft is fixed to both the patella and the tibia then sutured with the knee fully extended. Outcomes of this technique were assessed in 5 patients after at least 24 months' follow-up. The mean knee and function Knee Society Score values were 77...
July 18, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28723917/evidence-base-and-practice-variation-in-acute-care-processes-for-knee-and-hip-arthroplasty-surgeries
#20
Marcel Mayer, Justine Naylor, Ian Harris, Helen Badge, Sam Adie, Kathryn Mills, Joseph Descallar
BACKGROUND: Lack of evidence contributes to unnecessary variation in treatment costs and outcomes. This study aimed to identify from interventions historically used for total knee or hip arthroplasty (TKA, THA): i) if routine use is supported by high-level evidence; ii) whether surgeon use aligns with the evidence. METHODS: Part 1: Systematic search of electronic library databases for systematic reviews and practice guidelines concerning seven acute-care interventions...
2017: PloS One
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