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https://www.readbyqxmd.com/read/28430716/simultaneous-multislice-accelerated-turbo-spin-echo-magnetic-resonance-imaging-comparison-and-combination-with-in-plane-parallel-imaging-acceleration-for-high-resolution-magnetic-resonance-imaging-of-the-knee
#1
Jan Fritz, Benjamin Fritz, Jialu Zhang, Gaurav K Thawait, Dharmdev H Joshi, Li Pan, Dingxin Wang
PURPOSE: We prospectively quantified the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) of integrated parallel acquisition technique (PAT) and simultaneous multislice (SMS) acceleration and various combinations thereof, and we further compared two 4-fold-accelerated (PAT2-SMS2) high-resolution turbo spin echo (TSE) magnetic resonance imaging (MRI) protocols of the knee against a clinical 2-fold-accelerated (PAT2-SMS1) TSE standard. MATERIALS AND METHODS: Institutional review board approval was obtained, and all subjects gave informed consent...
April 20, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28429967/knee-arthroscopic-surgery-in-middle-aged-patients-with-meniscal-symptoms-a-3-year-follow-up-of-a-prospective-randomized-study
#2
Håkan Gauffin, Sofi Sonesson, Andreas Meunier, Henrik Magnusson, Joanna Kvist
BACKGROUND: The optimal treatment for middle-aged patients with knee pain and meniscal lesions has been extensively debated. Most previous studies have revealed only short-term beneficial results of knee arthroscopic surgery. The authors have previously shown a positive benefit of knee arthroscopic surgery and an exercise program after 1 year when compared with an exercise program alone. PURPOSE: To evaluate if knee arthroscopic surgery combined with an exercise program provided an additional long-term benefit after 3 years compared with an exercise program alone in middle-aged patients with meniscal symptoms...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28426243/analysis-of-2019-patients-undergoing-revision-anterior-cruciate-ligament-reconstruction-from-a-community-based-registry
#3
Afshin Arianjam, Maria C S Inacio, Tadashi T Funahashi, Gregory B Maletis
BACKGROUND: Knowledge of patient characteristics, surgical fixation, graft choice, outcomes, and concurrent injuries of revision anterior cruciate ligament reconstruction (ACLR) is limited. PURPOSE: To describe the current cohort of revision ACLR captured by a community registry and the outcomes observed in the registered patients. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: Patients who underwent revision ACLR registered between February 2005 and June 2014, by 200 surgeons in 46 hospitals, were evaluated...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28425824/isolated-acl-versus-multiple-knee-ligament-injury-associations-with-patient-characteristics-cartilage-status-and-meniscal-tears-identified-during-acl-reconstruction
#4
Ronald W B Wyatt, Maria C S Inacio, Kate D Bellevue, Alan L Schepps, Gregory B Maletis
OBJECTIVES: The objectives of this study were to determine (1) if patients undergoing reconstruction of an isolated anterior cruciate ligament (ACL) tear had different characteristics (age, gender, body mass index [BMI]) than patients undergoing ACL reconstruction (ACLR) with multiple knee ligament (MKL) tears and (2) whether there was a difference in prevalence of articular cartilage injury and meniscus tears between these two groups. METHODS: Patients undergoing primary ACLR between February 2005 and September 2013 were identified through an ACLR registry...
April 20, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28425757/the-prevalence-and-characteristics-of-a-subcortical-cystic-lesion-at-the-subspinous-region-of-the-knee
#5
Ji Ye Son, Young Cheol Yoon, Wook Jin, Jang Gyu Cha
Background Although we observed that subcortical cysts near the attachment of the meniscus or cruciate ligaments are frequently seen with a tear or degeneration of the adjacent meniscus and/or cruciate ligament, there is no large study describing the prevalence, distribution, and associated findings of these cysts. Purpose To evaluate the prevalence and distribution of subcortical cysts near the attachments of the meniscus or cruciate ligaments and evaluate pathologies of the meniscus or cruciate ligaments using magnetic resonance imaging (MRI)...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28425303/a-retrospective-study-assessing-safety-and-efficacy-of-bipolar-radiofrequency-ablation-for-knee-chondral-lesions
#6
Monther Gharaibeh, Andras Szomor, Darren B Chen, Samuel J MacDessi
OBJECTIVE: Bipolar radiofrequency (bRF) ablation is gaining popularity as a treatment modality for unstable knee chondral lesions of the knee. Limited reports of osteonecrosis and chondrolysis have been published; however, there is little data examining the safety of this treatment in larger series. This study aims to evaluate the safety and efficacy of bRF in the treatment of chondral lesions encountered during knee arthroscopy. DESIGN: A retrospective evaluation of adverse outcomes in patients that underwent treatment of chondral lesions using bRF was undertaken...
April 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28419808/outcomes-after-1-stage-versus-2-stage-revision-anterior-cruciate-ligament-reconstruction
#7
Justin J Mitchell, Jorge Chahla, Chase S Dean, Mark Cinque, Lauren M Matheny, Robert F LaPrade
BACKGROUND: Revision anterior cruciate ligament reconstruction (ACLR) is becoming increasingly common as the number of primary ACLR cases continues to rise. Despite this, there are limited data on the outcomes of revision ACLR and even less information specifically addressing the differences in 1-stage revision reconstruction versus those performed in a 2-stage fashion after primary reconstruction. PURPOSE: To compare the outcomes, patient satisfaction, and failure rates of 1-stage versus 2-stage revision ACLR...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28416188/a-giraffe-neck-sign-of-the-medial-meniscus-a-characteristic-finding-of-the-medial-meniscus-posterior-root-tear-on-magnetic-resonance-imaging
#8
Takayuki Furumatsu, Masataka Fujii, Yuya Kodama, Toshifumi Ozaki
BACKGROUND: The posterior root ligament of the medial meniscus (MM) has a critical role in regulating the MM movement. An accurate diagnosis of the MM posterior root tear (MMPRT) using magnetic resonance imaging (MRI) is important for preventing sequential osteoarthritis following the MMPRT. However, diagnosis of the MMPRT is relatively difficult even after using several characteristic MRI findings. The aim of this study was to identify a useful meniscal body sign of the MMPRT for improving diagnostic MRI reading...
April 13, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28409107/a-transosseous-bone-bridge-repair-for-posterior-horn-meniscal-root-tears-during-anterior-cruciate-ligament-reconstruction
#9
Jonathan M Frank, Daniel J Liechti, Jack Anavian, Thomas R Hackett
Meniscal root tears occur in isolation or concurrently with ligamentous knee injury and cause significantly altered knee mechanics with the loss of normal meniscus hoop stress. This loss of normal meniscus function can result in abnormal knee kinematics and, subsequently, more rapid degenerative changes of the knee articular surface. In the setting of anterior cruciate ligament tear, the posterolateral meniscus root is most commonly damaged. Several techniques exist for meniscus root repair; however, none have been shown to be clearly superior...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28407495/stem-cell-delivery-in-tissue-specific-hydrogel-enabled-meniscal-repair-in-an-orthotopic-rat-model
#10
Xiaoning Yuan, Yiyong Wei, Aránzazu Villasante, Johnathan J D Ng, Derya E Arkonac, Pen-Hsiu Grace Chao, Gordana Vunjak-Novakovic
Interest in non-invasive injectable therapies has rapidly risen due to their excellent safety profile and ease of use in clinical settings. Injectable hydrogels can be derived from the extracellular matrix (ECM) of specific tissues to provide a biomimetic environment for cell delivery and enable seamless regeneration of tissue defects. We investigated the in situ delivery of human mesenchymal stem cells (hMSCs) in decellularized meniscus ECM hydrogel to a meniscal defect in a nude rat model. First, decellularized meniscus ECM hydrogel retained tissue-specific proteoglycans and collagens, and significantly upregulated expression of fibrochondrogenic markers by hMSCs versus collagen hydrogel alone in vitro...
April 4, 2017: Biomaterials
https://www.readbyqxmd.com/read/28405740/mri-is-not-reliable-in-diagnosing-of-concomitant-anterolateral-ligament-and-anterior-cruciate-ligament-injuries-of-the-knee
#11
Brian M Devitt, Richard O'Sullivan, Julian A Feller, Nicholas Lash, Tabitha J Porter, Kate E Webster, Timothy S Whitehead
PURPOSE: There has been a renewed interest in the anterolateral structures of the knee, including description of the anterolateral ligament (ALL) as a distinct structure. Recognizing injury to the ALL is challenging, particularly given the subjective nature of physical examination. Consequently, focus has turned to magnetic resonance imaging (MRI) to reach a preoperative diagnosis of this region. The aim of this study was to examine the ability of 3-Tesla (3T) MRI to identify the ALL in ACL-injured patients compared to a matched control group of ACL-intact patients...
April 12, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28401426/high-rates-of-return-to-sports-activities-and-work-after-osteotomies-around-the-knee-a-systematic-review-and-meta-analysis
#12
REVIEW
Alexander Hoorntje, Suzanne Witjes, P Paul F M Kuijer, Koen L M Koenraadt, Rutger C I van Geenen, Joost G Daams, Alan Getgood, Gino M M J Kerkhoffs
BACKGROUND: Knee osteotomies are proven treatment options, especially in younger patients with unicompartmental knee osteoarthritis, for certain cases of chronic knee instability, or as concomitant treatment for meniscal repair or transplantation surgery. Presumably, these patients wish to stay active. Data on whether these patients return to sport (RTS) activities and return to work (RTW) are scarce. OBJECTIVES: Our aim was to systematically review (1) the extent to which patients can RTS and RTW after knee osteotomy and (2) the time to RTS and RTW...
April 11, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28400662/early-anterior-cruciate-ligament-reconstruction-can-save-meniscus-without-any-complications
#13
Chang-Ik Hur, Eun-Kyoo Song, Sung-Kyu Kim, Seung-Hun Lee, Jong-Keun Seon
BACKGROUND: Early ACL reconstruction, before retuning to activity eliminates recurrent episodes of instability and thereby decreases chances of meniscal and cartilage injury. However, there are no clear and uniform guidelines regarding the timing of ACL reconstruction or clarity in the definition of early and delayed reconstruction to reduce the complications after reconstruction in the ACL injured knee. The purpose of this study was to compare the clinical outcome, stability, muscle power, and postural control after early and delayed anterior cruciate ligament (ACL) reconstruction...
March 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28384173/daily-oral-consumption-of-hydrolyzed-type-1-collagen-is-chondroprotective-and-anti-inflammatory-in-murine-posttraumatic-osteoarthritis
#14
Qurratul-Ain Dar, Eric M Schott, Sarah E Catheline, Robert D Maynard, Zhaoyang Liu, Fadia Kamal, Christopher W Farnsworth, John P Ketz, Robert A Mooney, Matthew J Hilton, Jennifer H Jonason, Janne Prawitt, Michael J Zuscik
Osteoarthritis (OA) is a degenerative joint disease for which there are no disease modifying therapies. Thus, strategies that offer chondroprotective or regenerative capability represent a critical unmet need. Recently, oral consumption of a hydrolyzed type 1 collagen (hCol1) preparation has been reported to reduce pain in human OA and support a positive influence on chondrocyte function. To evaluate the tissue and cellular basis for these effects, we examined the impact of orally administered hCol1 in a model of posttraumatic OA (PTOA)...
2017: PloS One
https://www.readbyqxmd.com/read/28383764/risk-factors-for-radiographic-joint-space-narrowing-and-patient-reported-outcomes-of-post-traumatic-osteoarthritis-after-acl-reconstruction-data-from-the-moon-cohort
#15
Morgan H Jones, Kurt P Spindler
The Multicenter Orthopaedic Outcomes Network (MOON) is an NIH-funded prospective, longitudinal cohort of over 3500 patients who have undergone anterior cruciate ligament reconstruction (ACLR) by 14 sports medicine surgeons at 7 academic medical centers. Patient reported outcome questionnaires (PRO's) are completed at baseline and multiple timepoints after surgery, and a nested cohort of patients return for radiographs to assess the development of joint space changes. We review the risk factors for worse patient reported outcomes, the predictors of clinically significant symptoms of post-traumatic osteoarthritis (PTOA), and the factors associated with more radiographic joint space narrowing...
April 6, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28378451/association-between-medial-meniscus-extrusion-and-spontaneous-osteonecrosis-of-the-knee
#16
Tadashi Yasuda, Satoshi Ota, Satoshi Fujita, Eijiro Onishi, Koichi Iwaki, Hiroshi Yamamoto
AIM: Medial meniscus tear has been proposed as a potential etiology of spontaneous osteonecrosis of the knee (SONK). Disruption of collagen fibers within the meniscus causes meniscal extrusion, which results in alteration in load distribution in the knee. Our purpose was to determine whether the extent of medial meniscus extrusion correlates with the severity of SONK in the medial femoral condyle. METHODS: Radiological stage of SONK and femorotibial angle (FTA) were determined on knee radiographs...
April 5, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28375398/purls-when-can-exercise-supplant-surgery-for-degenerative-meniscal-tears
#17
Jennie B Jarrett, Sandra Sauereisen
Patients with a medial, degenerative meniscal tear and a minimal history of osteoarthritis make good candidates for physical therapy-- and there is an added benefit, too.
April 2017: Journal of Family Practice
https://www.readbyqxmd.com/read/28373943/simplified-arthroscopic-lateral-meniscal-root-repair-involving-the-use-of-2-cinch-loop-sutures
#18
Patrick A Smith, Jordan A Bley
The meniscal root attachments are critical for meniscal function by securing the menisci in place and allowing optimal shock absorption in the knee. Successful meniscal root repair has been shown to restore the knee's tibiofemoral contact pressure to the same state as an intact meniscus. Although there have been multiple different repair techniques described, there is no report in the literature regarding the use of 2 simple cinch-loop sutures for a meniscal root repair. This article presents an arthroscopic lateral meniscal root repair technique involving the use of 2 simple cinch-loop configuration sutures and tibial suture anchor fixation...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28373139/actifit%C3%A2-polyurethane-meniscal-scaffold-mri-and-functional-outcomes-after-a-minimum-follow-up-of-5-years
#19
A Leroy, P Beaufils, B Faivre, C Steltzlen, P Boisrenoult, N Pujol
BACKGROUND: Implantation of the Actifit® polyurethane meniscal scaffold in patients who have pain after partial meniscectomy provides short-term pain relief and better function. But there is a lack of information about medium-term outcomes. The objective of this longitudinal study was to evaluate the MRI and functional outcomes after a minimum follow-up of 5 years. It was hypothesized that the results are stable over time. MATERIAL AND METHODS: Fifteen consecutive patients (8 men, 7 women; mean age 30 years, range 19-47, mean BMI 25) were enrolled in the study between February 2008 and January 2011...
March 31, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28370168/major-complications-of-tibial-tuberosity-advancement-in-1613-dogs
#20
Mario Costa, Diane Craig, Tony Cambridge, Peter Sebestyen, Yuhua Su, Maria A Fahie
OBJECTIVES: To report major postoperative complications in 1613 dogs with tibial tuberosity advancement (TTA). STUDY DESIGN: Retrospective case series. SAMPLE POPULATION: Dogs (n = 1613) with cranial cruciate ligament deficiency treated with TTA. METHODS: Medical records of TTAs performed between December 2007-2013 were reviewed for age, sex, weight, contralateral stifle surgery, surgical approach, duration of preoperative lameness, presence of meniscal damage, concurrent patellar luxation and simultaneous bilateral TTA...
March 31, 2017: Veterinary Surgery: VS
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